Jabel, Generic injection and mostly automatic code cleanup (#1829)

* Enable Jabel&Generic injection, fix type error caused by this

* add missing <>

* Infer generic types automatically

* Parametrize cast types

* Use enhanced for loops

* Unnecessary boxing

* Unnecessary unboxing

* Use Objects.equals

* Explicit type can be replaced with `<>`

* Collapse identical catch blocks

* Add SafeVarargs where applicable

* Anonymous type can be replaced with lambda

* Use List.sort directly

* Lambda can be a method reference

* Statement lambda can be an expression lambda

* Use string switches

* Instanceof pattern matching

* Text block can be used

* Migrate to enhanced switch

* Java style array declarations

* Unnecessary toString()

* More unnecessary String conversions

* Unnecessary modifiers

* Unnecessary semicolons

* Fix duplicate conditions

* Extract common code from if branches

* Replace switches with ifs for 1-2 cases

* Inner class may be static

* Minor performance issues

* Replace string appending in loops with string builders

* Fix IntelliJ using the wrong empty list method

* Use Long.compare

* Generic arguments: getSubItems

* Generic arguments: getSubBlocks

* Raw types warnings

* Fix remaining missing generics

* Too weak variable type leads to unnecessary cast

* Redundant type casts

* Redundant array length check

* Redundant vararg arrays

* Manual min/max implementations

* A couple missed inspections

* Goodbye explosion power ternary ladder

* Apply spotless

* Get rid of the other two big ternary ladders

* Binary search explosion power

* Don't overcomplicate things

14 files changed, 149 insertions, 216 deletions

diff --git a/src/main/java/gregtech/api/gui/GT_Container.java b/src/main/java/gregtech/api/gui/GT_Container.java
index 1c6b4ff60a..819171ae02 100644
--- a/src/main/java/gregtech/api/gui/GT_Container.java
+++ b/src/main/java/gregtech/api/gui/GT_Container.java
@@ -149,7 +149,7 @@ public class GT_Container extends Container {
                     }
                 }
             } else if (aShifthold == 1) {
-                aSlot = (Slot) this.inventorySlots.get(aSlotIndex);
+                aSlot = this.inventorySlots.get(aSlotIndex);
                 if (aSlot != null && aSlot.canTakeStack(aPlayer)) {
                     tTempStack = this.transferStackInSlot(aPlayer, aSlotIndex);
                     if (tTempStack != null) {
@@ -165,7 +165,7 @@ public class GT_Container extends Container {
                 if (aSlotIndex < 0) {
                     return null;
                 }
-                aSlot = (Slot) this.inventorySlots.get(aSlotIndex);
+                aSlot = this.inventorySlots.get(aSlotIndex);
                 if (aSlot != null) {
                     tTempStack = aSlot.getStack();
                     ItemStack mouseStack = aPlayerInventory.getItemStack();
@@ -239,7 +239,7 @@ public class GT_Container extends Container {
             // number key from 1 to 9
             // aMouseclick == 0 means number 1, aMouseclick == 8 means number 9
         } else if (aShifthold == 2 && aMouseclick >= 0 && aMouseclick < 9) {
-            aSlot = (Slot) this.inventorySlots.get(aSlotIndex);
+            aSlot = this.inventorySlots.get(aSlotIndex);
 
             if (aSlot.canTakeStack(aPlayer)) {
                 // get the stack at the specified hotbar slot.
@@ -277,7 +277,7 @@ public class GT_Container extends Container {
         } else if (aShifthold == 3 && aPlayer.capabilities.isCreativeMode
                 && aPlayerInventory.getItemStack() == null
                 && aSlotIndex >= 0) {
-                    aSlot = (Slot) this.inventorySlots.get(aSlotIndex);
+                    aSlot = this.inventorySlots.get(aSlotIndex);
                     if (aSlot != null && aSlot.getHasStack()) {
                         tTempStack = GT_Utility.copyOrNull(aSlot.getStack());
                         tTempStack.stackSize = tTempStack.getMaxStackSize();
@@ -290,7 +290,7 @@ public class GT_Container extends Container {
     @Override
     public ItemStack transferStackInSlot(EntityPlayer aPlayer, int aSlotIndex) {
         ItemStack stack = null;
-        Slot slotObject = (Slot) inventorySlots.get(aSlotIndex);
+        Slot slotObject = inventorySlots.get(aSlotIndex);
 
         mTileEntity.markDirty();
 
@@ -345,7 +345,7 @@ public class GT_Container extends Container {
         if (aStack.isStackable()) {
             while (aStack.stackSize > 0
                     && (!reverseOrder && slotIndex < aSlotCount || reverseOrder && slotIndex >= aStartIndex)) {
-                slot = (Slot) this.inventorySlots.get(slotIndex);
+                slot = this.inventorySlots.get(slotIndex);
                 itemStack = slot.getStack();
                 if (!(slot instanceof GT_Slot_Holo) && !(slot instanceof GT_Slot_Output)
                         && slot.isItemValid(aStack)
@@ -384,7 +384,7 @@ public class GT_Container extends Container {
             }
 
             while (!reverseOrder && slotIndex < aSlotCount || reverseOrder && slotIndex >= aStartIndex) {
-                slot = (Slot) this.inventorySlots.get(slotIndex);
+                slot = this.inventorySlots.get(slotIndex);
                 itemStack = slot.getStack();
 
                 if (slot.isItemValid(aStack) && itemStack == null) {
@@ -427,7 +427,7 @@ public class GT_Container extends Container {
     }
 
     @Override
-    public List getInventory() {
+    public List<ItemStack> getInventory() {
         try {
             return super.getInventory();
         } catch (Throwable e) {
@@ -643,8 +643,7 @@ public class GT_Container extends Container {
         if (tStackSizedOne == null || tStackHeld.stackSize == 0) return null;
         int tOriginalFluidAmount = tTankStack.amount;
         ItemStack tFilledContainer = GT_Utility.fillFluidContainer(tTankStack, tStackSizedOne, true, false);
-        if (tFilledContainer == null && tStackSizedOne.getItem() instanceof IFluidContainerItem) {
-            IFluidContainerItem tContainerItem = (IFluidContainerItem) tStackSizedOne.getItem();
+        if (tFilledContainer == null && tStackSizedOne.getItem() instanceof IFluidContainerItem tContainerItem) {
             int tFilledAmount = tContainerItem.fill(tStackSizedOne, tTankStack, true);
             if (tFilledAmount > 0) {
                 tFilledContainer = tStackSizedOne;
@@ -694,9 +693,8 @@ public class GT_Container extends Container {
             tStackEmptied = GT_Utility.getContainerForFilledItem(tStackSizedOne, false);
             tAmountTaken = aFluidHeld.amount;
         }
-        if (tStackEmptied == null && tStackSizedOne.getItem() instanceof IFluidContainerItem) {
+        if (tStackEmptied == null && tStackSizedOne.getItem() instanceof IFluidContainerItem container) {
             // either partially accepted, or is IFluidContainerItem
-            IFluidContainerItem container = (IFluidContainerItem) tStackSizedOne.getItem();
             FluidStack tDrained = container.drain(tStackSizedOne, tFreeSpace, true);
             if (tDrained != null && tDrained.amount > 0) {
                 // something is actually drained - change the cell and drop it to player
diff --git a/src/main/java/gregtech/api/gui/GT_ContainerMetaTile_Machine.java b/src/main/java/gregtech/api/gui/GT_ContainerMetaTile_Machine.java
index 4627362e66..3f2b45064d 100644
--- a/src/main/java/gregtech/api/gui/GT_ContainerMetaTile_Machine.java
+++ b/src/main/java/gregtech/api/gui/GT_ContainerMetaTile_Machine.java
@@ -59,8 +59,7 @@ public class GT_ContainerMetaTile_Machine extends GT_Container {
     }
 
     protected void addCircuitSlot() {
-        if (mTileEntity.getMetaTileEntity() instanceof IConfigurationCircuitSupport) {
-            IConfigurationCircuitSupport ccs = (IConfigurationCircuitSupport) mTileEntity.getMetaTileEntity();
+        if (mTileEntity.getMetaTileEntity() instanceof IConfigurationCircuitSupport ccs) {
             GT_Slot_Render slotCircuit = new GT_Slot_Render(
                     mTileEntity,
                     ccs.getCircuitSlot(),
@@ -94,8 +93,8 @@ public class GT_ContainerMetaTile_Machine extends GT_Container {
         mActive = mTileEntity.isActive() ? 1 : 0;
         mTimer++;
 
-        for (Object crafter : this.crafters) {
-            ICrafting player = (ICrafting) crafter;
+        for (ICrafting crafter : this.crafters) {
+            ICrafting player = crafter;
             if (mTimer % 500 == 10 || oEnergy != mEnergy) {
                 player.sendProgressBarUpdate(this, 0, mEnergy & 65535);
                 player.sendProgressBarUpdate(this, 1, mEnergy >>> 16);
@@ -165,69 +164,27 @@ public class GT_ContainerMetaTile_Machine extends GT_Container {
     public void updateProgressBar(int id, int value) {
         super.updateProgressBar(id, value);
         switch (id) {
-            case 0:
-                mEnergy = mEnergy & 0xffff0000 | value & 0x0000ffff;
-                break;
-            case 1:
-                mEnergy = mEnergy & 0x0000ffff | value << 16;
-                break;
-            case 2:
-                mStorage = mStorage & 0xffff0000 | value & 0x0000ffff;
-                break;
-            case 3:
-                mStorage = mStorage & 0x0000ffff | value << 16;
-                break;
-            case 4:
-                mOutput = value;
-                break;
-            case 5:
-                mInput = value;
-                break;
-            case 6:
-                mDisplayErrorCode = value;
-                break;
-            case 11:
-                mProgressTime = mProgressTime & 0xffff0000 | value;
-                break;
-            case 12:
-                mProgressTime = mProgressTime & 0x0000ffff | value << 16;
-                break;
-            case 13:
-                mMaxProgressTime = mMaxProgressTime & 0xffff0000 | value & 0x0000ffff;
-                break;
-            case 14:
-                mMaxProgressTime = mMaxProgressTime & 0x0000ffff | value << 16;
-                break;
-            case 15:
-                mID = value;
-                break;
-            case 16:
-                mActive = value;
-                break;
-            case 17:
-                mSteam = mSteam & 0xffff0000 | value & 0x0000ffff;
-                break;
-            case 18:
-                mSteam = mSteam & 0x0000ffff | value << 16;
-                break;
-            case 19:
-                mSteamStorage = mSteamStorage & 0xffff0000 | value & 0x0000ffff;
-                break;
-            case 20:
-                mSteamStorage = mSteamStorage & 0x0000ffff | value << 16;
-                break;
-            case 21:
-                mEnergyLong = mEnergyLong & 0xffffffff00000000L | value & 0x00000000ffffffffL;
-                break;
-            case 22:
-                mEnergyLong = mEnergyLong & 0x00000000ffffffffL | (long) value << 32;
-                break;
-            case 23:
-                mStorageLong = mStorageLong & 0xffffffff00000000L | value & 0x00000000ffffffffL;
-                break;
-            case 24:
-                mStorageLong = mStorageLong & 0x00000000ffffffffL | (long) value << 32;
-                break;
+            case 0 -> mEnergy = mEnergy & 0xffff0000 | value & 0x0000ffff;
+            case 1 -> mEnergy = mEnergy & 0x0000ffff | value << 16;
+            case 2 -> mStorage = mStorage & 0xffff0000 | value & 0x0000ffff;
+            case 3 -> mStorage = mStorage & 0x0000ffff | value << 16;
+            case 4 -> mOutput = value;
+            case 5 -> mInput = value;
+            case 6 -> mDisplayErrorCode = value;
+            case 11 -> mProgressTime = mProgressTime & 0xffff0000 | value;
+            case 12 -> mProgressTime = mProgressTime & 0x0000ffff | value << 16;
+            case 13 -> mMaxProgressTime = mMaxProgressTime & 0xffff0000 | value & 0x0000ffff;
+            case 14 -> mMaxProgressTime = mMaxProgressTime & 0x0000ffff | value << 16;
+            case 15 -> mID = value;
+            case 16 -> mActive = value;
+            case 17 -> mSteam = mSteam & 0xffff0000 | value & 0x0000ffff;
+            case 18 -> mSteam = mSteam & 0x0000ffff | value << 16;
+            case 19 -> mSteamStorage = mSteamStorage & 0xffff0000 | value & 0x0000ffff;
+            case 20 -> mSteamStorage = mSteamStorage & 0x0000ffff | value << 16;
+            case 21 -> mEnergyLong = mEnergyLong & 0xffffffff00000000L | value & 0x00000000ffffffffL;
+            case 22 -> mEnergyLong = mEnergyLong & 0x00000000ffffffffL | (long) value << 32;
+            case 23 -> mStorageLong = mStorageLong & 0xffffffff00000000L | value & 0x00000000ffffffffL;
+            case 24 -> mStorageLong = mStorageLong & 0x00000000ffffffffL | (long) value << 32;
         }
     }
 
diff --git a/src/main/java/gregtech/api/gui/GT_Container_BasicMachine.java b/src/main/java/gregtech/api/gui/GT_Container_BasicMachine.java
index 101c1cba83..976d7e8127 100644
--- a/src/main/java/gregtech/api/gui/GT_Container_BasicMachine.java
+++ b/src/main/java/gregtech/api/gui/GT_Container_BasicMachine.java
@@ -203,23 +203,25 @@ public class GT_Container_BasicMachine extends GT_Container_BasicTank {
         GT_MetaTileEntity_BasicMachine machine = getMachine();
         if (machine == null) return null;
         switch (aSlotNumber) {
-            case 0:
+            case 0 -> {
                 if (slotFluidTransferToggle.isEnabled()) {
                     machine.mFluidTransfer = !machine.mFluidTransfer;
                 }
                 return null;
-            case 1:
+            }
+            case 1 -> {
                 if (slotItemTransferToggle.isEnabled()) {
                     machine.mItemTransfer = !machine.mItemTransfer;
                 }
                 return null;
-            default:
+            }
+            default -> {
                 if (aSlotNumber == OTHER_SLOT_COUNT + 1 + machine.mInputSlotCount + machine.mOutputItems.length
                         && aMouseclick < 2) {
                     GT_MetaTileEntity_BasicTank tTank = (GT_MetaTileEntity_BasicTank) mTileEntity.getMetaTileEntity();
                     if (mTileEntity.isClientSide()) {
                         // see parent class slotClick for an explanation on why doing this
-                        Slot slot = (Slot) inventorySlots.get(aSlotNumber);
+                        Slot slot = inventorySlots.get(aSlotNumber);
                         tTank.setFillableStack(GT_Utility.getFluidFromDisplayStack(slot.getStack()));
                     }
                     IFluidAccess tFillableAccess = constructFluidAccess(tTank, true);
@@ -236,6 +238,7 @@ public class GT_Container_BasicMachine extends GT_Container_BasicTank {
                 } else {
                     return super.slotClick(aSlotNumber, aMouseclick, aShifthold, aPlayer);
                 }
+            }
         }
     }
 
@@ -248,8 +251,8 @@ public class GT_Container_BasicMachine extends GT_Container_BasicTank {
         mItemTransfer = getMachine().mItemTransfer;
         mStuttering = getMachine().mStuttering;
 
-        for (Object crafter : this.crafters) {
-            ICrafting player = (ICrafting) crafter;
+        for (ICrafting crafter : this.crafters) {
+            ICrafting player = crafter;
             player.sendProgressBarUpdate(this, 102, mFluidTransfer ? 1 : 0);
             player.sendProgressBarUpdate(this, 103, mItemTransfer ? 1 : 0);
             player.sendProgressBarUpdate(this, 104, mStuttering ? 1 : 0);
@@ -266,15 +269,9 @@ public class GT_Container_BasicMachine extends GT_Container_BasicTank {
     public void updateProgressBar(int id, int value) {
         super.updateProgressBar(id, value);
         switch (id) {
-            case 102:
-                mFluidTransfer = (value != 0);
-                break;
-            case 103:
-                mItemTransfer = (value != 0);
-                break;
-            case 104:
-                mStuttering = (value != 0);
-                break;
+            case 102 -> mFluidTransfer = (value != 0);
+            case 103 -> mItemTransfer = (value != 0);
+            case 104 -> mStuttering = (value != 0);
         }
     }
 
diff --git a/src/main/java/gregtech/api/gui/GT_Container_BasicTank.java b/src/main/java/gregtech/api/gui/GT_Container_BasicTank.java
index 5aa793f8f6..f463b35f7c 100644
--- a/src/main/java/gregtech/api/gui/GT_Container_BasicTank.java
+++ b/src/main/java/gregtech/api/gui/GT_Container_BasicTank.java
@@ -51,7 +51,7 @@ public class GT_Container_BasicTank extends GT_ContainerMetaTile_Machine {
                  * to become only more severe when playing MP over ethernet, which would have much more latency than a
                  * memory connection
                  */
-                Slot slot = (Slot) inventorySlots.get(aSlotIndex);
+                Slot slot = inventorySlots.get(aSlotIndex);
                 tTank.setDrainableStack(GT_Utility.getFluidFromDisplayStack(slot.getStack()));
             }
             IFluidAccess tDrainableAccess = constructFluidAccess(tTank, false);
@@ -77,8 +77,8 @@ public class GT_Container_BasicTank extends GT_ContainerMetaTile_Machine {
     }
 
     public void sendProgressBar() {
-        for (Object crafter : this.crafters) {
-            ICrafting player = (ICrafting) crafter;
+        for (ICrafting crafter : this.crafters) {
+            ICrafting player = crafter;
             if (mTimer % 500 == 0 || oContent != mContent) {
                 player.sendProgressBarUpdate(this, 100, mContent & 65535);
                 player.sendProgressBarUpdate(this, 101, mContent >>> 16);
@@ -91,12 +91,8 @@ public class GT_Container_BasicTank extends GT_ContainerMetaTile_Machine {
     public void updateProgressBar(int id, int value) {
         super.updateProgressBar(id, value);
         switch (id) {
-            case 100:
-                mContent = mContent & 0xffff0000 | value & 0x0000ffff;
-                break;
-            case 101:
-                mContent = mContent & 0xffff | value << 16;
-                break;
+            case 100 -> mContent = mContent & 0xffff0000 | value & 0x0000ffff;
+            case 101 -> mContent = mContent & 0xffff | value << 16;
         }
     }
 
diff --git a/src/main/java/gregtech/api/gui/GT_GUIColorOverride.java b/src/main/java/gregtech/api/gui/GT_GUIColorOverride.java
index 06ddf16d02..7c6328bb34 100644
--- a/src/main/java/gregtech/api/gui/GT_GUIColorOverride.java
+++ b/src/main/java/gregtech/api/gui/GT_GUIColorOverride.java
@@ -23,27 +23,26 @@ public class GT_GUIColorOverride {
     private static final Object NOT_FOUND = new Object();
     private static final LoadingCache<ResourceLocation, Object> cache = CacheBuilder.newBuilder()
                                                                                     .softValues()
-                                                                                    .build(
-                                                                                            new CacheLoader<ResourceLocation, Object>() {
-
-                                                                                                @Override
-                                                                                                public Object load(
-                                                                                                        @Nonnull ResourceLocation key)
-                                                                                                        throws Exception {
-                                                                                                    IResource ir = Minecraft.getMinecraft()
-                                                                                                                            .getResourceManager()
-                                                                                                                            .getResource(
-                                                                                                                                    key);
-                                                                                                    if (ir.hasMetadata())
-                                                                                                        return ir.getMetadata(
-                                                                                                                "colors");
-                                                                                                    // return a dummy
-                                                                                                    // object because
-                                                                                                    // LoadingCache
-                                                                                                    // doesn't like null
-                                                                                                    return NOT_FOUND;
-                                                                                                }
-                                                                                            });
+                                                                                    .build(new CacheLoader<>() {
+
+                                                                                        @Override
+                                                                                        public Object load(
+                                                                                                @Nonnull ResourceLocation key)
+                                                                                                throws Exception {
+                                                                                            IResource ir = Minecraft.getMinecraft()
+                                                                                                                    .getResourceManager()
+                                                                                                                    .getResource(
+                                                                                                                            key);
+                                                                                            if (ir.hasMetadata())
+                                                                                                return ir.getMetadata(
+                                                                                                        "colors");
+                                                                                            // return a dummy
+                                                                                            // object because
+                                                                                            // LoadingCache
+                                                                                            // doesn't like null
+                                                                                            return NOT_FOUND;
+                                                                                        }
+                                                                                    });
     private static final GT_GUIColorOverride FALLBACK = new GT_GUIColorOverride();
     private ColorsMetadataSection cmSection;
 
diff --git a/src/main/java/gregtech/api/gui/GT_GUIContainerMetaTile_Machine.java b/src/main/java/gregtech/api/gui/GT_GUIContainerMetaTile_Machine.java
index e44b4f0cbc..cbccdc5385 100644
--- a/src/main/java/gregtech/api/gui/GT_GUIContainerMetaTile_Machine.java
+++ b/src/main/java/gregtech/api/gui/GT_GUIContainerMetaTile_Machine.java
@@ -180,8 +180,7 @@ public class GT_GUIContainerMetaTile_Machine extends GT_GUIContainer implements
      * are enabled.
      */
     protected void setupTooltips() {
-        if (mContainer.mTileEntity.getMetaTileEntity() instanceof IConfigurationCircuitSupport) {
-            IConfigurationCircuitSupport ccs = (IConfigurationCircuitSupport) mContainer.mTileEntity.getMetaTileEntity();
+        if (mContainer.mTileEntity.getMetaTileEntity() instanceof IConfigurationCircuitSupport ccs) {
             if (ccs.allowSelectCircuit()) addToolTip(
                     new GT_GuiSlotTooltip(
                             mContainer.getSlot(ccs.getCircuitGUISlot()),
@@ -191,7 +190,7 @@ public class GT_GUIContainerMetaTile_Machine extends GT_GUIContainer implements
 
     // GT_IToolTipRenderer and GT_ITabRenderer implementations
     @Override
-    public void drawHoveringText(List text, int mouseX, int mouseY, FontRenderer font) {
+    public void drawHoveringText(List<String> text, int mouseX, int mouseY, FontRenderer font) {
         super.drawHoveringText(text, mouseX, mouseY, font);
     }
 
@@ -232,8 +231,7 @@ public class GT_GUIContainerMetaTile_Machine extends GT_GUIContainer implements
 
     @Override
     protected void onMouseWheel(int mx, int my, int delta) {
-        if (mContainer.mTileEntity.getMetaTileEntity() instanceof IConfigurationCircuitSupport) {
-            IConfigurationCircuitSupport ccs = (IConfigurationCircuitSupport) mContainer.mTileEntity.getMetaTileEntity();
+        if (mContainer.mTileEntity.getMetaTileEntity() instanceof IConfigurationCircuitSupport ccs) {
             Slot slotCircuit = mContainer.getSlot(ccs.getCircuitGUISlot());
             if (slotCircuit != null
                     && func_146978_c(slotCircuit.xDisplayPosition, slotCircuit.yDisplayPosition, 16, 16, mx, my)) {
diff --git a/src/main/java/gregtech/api/gui/GT_GUIContainer_BasicMachine.java b/src/main/java/gregtech/api/gui/GT_GUIContainer_BasicMachine.java
index 899d8331bc..eb0122093c 100644
--- a/src/main/java/gregtech/api/gui/GT_GUIContainer_BasicMachine.java
+++ b/src/main/java/gregtech/api/gui/GT_GUIContainer_BasicMachine.java
@@ -11,7 +11,6 @@ import gregtech.api.enums.GT_Values;
 import gregtech.api.gui.widgets.GT_GuiIcon;
 import gregtech.api.gui.widgets.GT_GuiSlotTooltip;
 import gregtech.api.gui.widgets.GT_GuiSmartTooltip;
-import gregtech.api.gui.widgets.GT_GuiSmartTooltip.TooltipVisibilityProvider;
 import gregtech.api.gui.widgets.GT_GuiTabLine.GT_GuiTabIconSet;
 import gregtech.api.interfaces.tileentity.IGregTechTileEntity;
 import gregtech.api.metatileentity.implementations.GT_MetaTileEntity_BasicMachine;
@@ -84,12 +83,11 @@ public class GT_GUIContainer_BasicMachine extends GT_GUIContainerMetaTile_Machin
         if (machine.isSteampowered()) {
             batterySlotTooltipKey = UNUSED_SLOT_TOOLTIP;
             batterySlotTooltipArgs = new String[0];
-            addToolTip(new GT_GuiSmartTooltip(tProblemArea, new TooltipVisibilityProvider() {
-
-                public boolean shouldShowTooltip() {
-                    return hasErrorCode(NEEDS_STEAM_VENTING);
-                }
-            }, mTooltipCache.getData(STALLED_VENT_TOOLTIP)));
+            addToolTip(
+                    new GT_GuiSmartTooltip(
+                            tProblemArea,
+                            () -> hasErrorCode(NEEDS_STEAM_VENTING),
+                            mTooltipCache.getData(STALLED_VENT_TOOLTIP)));
         } else {
             String pTier1 = powerTierName(machine.mTier);
             if (machine.mTier == GT_Values.VN.length - 1) {
@@ -130,21 +128,19 @@ public class GT_GUIContainer_BasicMachine extends GT_GUIContainerMetaTile_Machin
                         mTooltipCache.getData(
                                 recipes != null && recipes.usesSpecialSlot() ? SPECIAL_SLOT_TOOLTIP
                                         : UNUSED_SLOT_TOOLTIP)));
-        addToolTip(new GT_GuiSmartTooltip(tProblemArea, new TooltipVisibilityProvider() {
-
-            public boolean shouldShowTooltip() {
-                return container.mStuttering && !hasErrorCode(NEEDS_STEAM_VENTING);
-            }
-        },
-                mTooltipCache.getData(
-                        STALLED_STUTTERING_TOOLTIP,
-                        StatCollector.translateToLocal(
-                                POWER_SOURCE_KEY + (machine.isSteampowered() ? "steam" : "power")))));
+        addToolTip(
+                new GT_GuiSmartTooltip(
+                        tProblemArea,
+                        () -> container.mStuttering && !hasErrorCode(NEEDS_STEAM_VENTING),
+                        mTooltipCache.getData(
+                                STALLED_STUTTERING_TOOLTIP,
+                                StatCollector.translateToLocal(
+                                        POWER_SOURCE_KEY + (machine.isSteampowered() ? "steam" : "power")))));
     }
 
     /**
      * Apply proper coloration to a machine's power tier short name
-     * 
+     *
      * @param machineTier
      * @return colored power tier short name
      */
@@ -187,34 +183,38 @@ public class GT_GUIContainer_BasicMachine extends GT_GUIContainerMetaTile_Machin
                         % (tSize + 1);
 
                 switch (mProgressBarDirection) { // yes, my OCD was mad at me before I did the Tabs.
-                    case 0:
-                        drawTexturedModalRect(x + 78, y + 24, 176, 0, tProgress, 18);
-                        break;
-                    case 1:
-                        drawTexturedModalRect(x + 78 + 20 - tProgress, y + 24, 176 + 20 - tProgress, 0, tProgress, 18);
-                        break;
-                    case 2:
-                        drawTexturedModalRect(x + 78, y + 24, 176, 0, 20, tProgress);
-                        break;
-                    case 3:
-                        drawTexturedModalRect(x + 78, y + 24 + 18 - tProgress, 176, 18 - tProgress, 20, tProgress);
-                        break;
-                    case 4:
+                    case 0 -> drawTexturedModalRect(x + 78, y + 24, 176, 0, tProgress, 18);
+                    case 1 -> drawTexturedModalRect(
+                            x + 78 + 20 - tProgress,
+                            y + 24,
+                            176 + 20 - tProgress,
+                            0,
+                            tProgress,
+                            18);
+                    case 2 -> drawTexturedModalRect(x + 78, y + 24, 176, 0, 20, tProgress);
+                    case 3 -> drawTexturedModalRect(
+                            x + 78,
+                            y + 24 + 18 - tProgress,
+                            176,
+                            18 - tProgress,
+                            20,
+                            tProgress);
+                    case 4 -> {
                         tProgress = 20 - tProgress;
                         drawTexturedModalRect(x + 78, y + 24, 176, 0, tProgress, 18);
-                        break;
-                    case 5:
+                    }
+                    case 5 -> {
                         tProgress = 20 - tProgress;
                         drawTexturedModalRect(x + 78 + 20 - tProgress, y + 24, 176 + 20 - tProgress, 0, tProgress, 18);
-                        break;
-                    case 6:
+                    }
+                    case 6 -> {
                         tProgress = 18 - tProgress;
                         drawTexturedModalRect(x + 78, y + 24, 176, 0, 20, tProgress);
-                        break;
-                    case 7:
+                    }
+                    case 7 -> {
                         tProgress = 18 - tProgress;
                         drawTexturedModalRect(x + 78, y + 24 + 18 - tProgress, 176, 18 - tProgress, 20, tProgress);
-                        break;
+                    }
                 }
             }
         }
diff --git a/src/main/java/gregtech/api/gui/GT_GUIDialogSelectItem.java b/src/main/java/gregtech/api/gui/GT_GUIDialogSelectItem.java
index fed1671484..1f95def197 100644
--- a/src/main/java/gregtech/api/gui/GT_GUIDialogSelectItem.java
+++ b/src/main/java/gregtech/api/gui/GT_GUIDialogSelectItem.java
@@ -52,7 +52,7 @@ public class GT_GUIDialogSelectItem extends GT_GUIScreen {
     /**
      * Open a dialog to select an item from given list. Given callback may be called zero or more times depending on
      * user action.
-     * 
+     *
      * @param header           Header text
      * @param headerItem       ItemStack to use as Dialog icon
      * @param parent           open which GUIScreen when this dialog is closed. use null if it has no parent.
@@ -105,12 +105,14 @@ public class GT_GUIDialogSelectItem extends GT_GUIScreen {
     @Override
     public void buttonClicked(GuiButton button) {
         switch (button.id) {
-            case 0:
+            case 0 -> {
                 setScroll(scroll - 1);
                 return;
-            case 1:
+            }
+            case 1 -> {
                 setScroll(scroll + 1);
                 return;
+            }
         }
         super.buttonClicked(button);
     }
diff --git a/src/main/java/gregtech/api/gui/GT_GUIScreen.java b/src/main/java/gregtech/api/gui/GT_GUIScreen.java
index 1aa9ccc24c..52ecbe8ab5 100644
--- a/src/main/java/gregtech/api/gui/GT_GUIScreen.java
+++ b/src/main/java/gregtech/api/gui/GT_GUIScreen.java
@@ -61,7 +61,7 @@ public abstract class GT_GUIScreen extends GuiScreen implements GT_IToolTipRende
         guiTop = (this.height - this.gui_height) / 2;
 
         for (IGuiElement element : elements) {
-            if (element instanceof GuiButton) buttonList.add(element);
+            if (element instanceof GuiButton button) buttonList.add(button);
             if (element instanceof GT_GuiIntegerTextBox) textBoxes.add((GT_GuiIntegerTextBox) element);
         }
 
@@ -181,12 +181,11 @@ public abstract class GT_GUIScreen extends GuiScreen implements GT_IToolTipRende
             if (focusedTextBox != null) {
                 resetTextBox(focusedTextBox);
                 setFocusedTextBox(null);
-                return;
             } else {
                 closeScreen();
                 // don't fall through to parent
-                return;
             }
+            return;
         }
 
         if (c == '\t') { // tab
@@ -268,7 +267,7 @@ public abstract class GT_GUIScreen extends GuiScreen implements GT_IToolTipRende
      * GT_IToolTipRenderer
      */
     @Override
-    public void drawHoveringText(List text, int mouseX, int mouseY, FontRenderer render) {
+    public void drawHoveringText(List<String> text, int mouseX, int mouseY, FontRenderer render) {
         super.drawHoveringText(text, mouseX, mouseY, render);
     }
 
diff --git a/src/main/java/gregtech/api/gui/modularui/GT_UIInfos.java b/src/main/java/gregtech/api/gui/modularui/GT_UIInfos.java
index e068cd967e..4d004429b0 100644
--- a/src/main/java/gregtech/api/gui/modularui/GT_UIInfos.java
+++ b/src/main/java/gregtech/api/gui/modularui/GT_UIInfos.java
@@ -89,8 +89,7 @@ public class GT_UIInfos {
                     UIBuilder.of()
                              .container((player, world, x, y, z) -> {
                                  final TileEntity te = world.getTileEntity(x, y, z);
-                                 if (!(te instanceof ICoverable)) return null;
-                                 final ICoverable gtTileEntity = (ICoverable) te;
+                                 if (!(te instanceof ICoverable gtTileEntity)) return null;
                                  GT_CoverBehaviorBase<?> cover = gtTileEntity.getCoverBehaviorAtSideNew(side);
                                  return createCoverContainer(
                                          player,
@@ -103,8 +102,7 @@ public class GT_UIInfos {
                              .gui((player, world, x, y, z) -> {
                                  if (!world.isRemote) return null;
                                  final TileEntity te = world.getTileEntity(x, y, z);
-                                 if (!(te instanceof ICoverable)) return null;
-                                 final ICoverable gtTileEntity = (ICoverable) te;
+                                 if (!(te instanceof ICoverable gtTileEntity)) return null;
                                  final GT_CoverBehaviorBase<?> cover = gtTileEntity.getCoverBehaviorAtSideNew(side);
                                  return createCoverGuiContainer(
                                          player,
diff --git a/src/main/java/gregtech/api/gui/modularui/SteamTexture.java b/src/main/java/gregtech/api/gui/modularui/SteamTexture.java
index 619b19e232..7cebd957f2 100644
--- a/src/main/java/gregtech/api/gui/modularui/SteamTexture.java
+++ b/src/main/java/gregtech/api/gui/modularui/SteamTexture.java
@@ -50,29 +50,21 @@ public class SteamTexture {
     }
 
     public UITexture get(SteamVariant variant) {
-        switch (variant) {
-            case BRONZE:
-                return bronzeTexture;
-            case STEEL:
-                return steelTexture;
-            case PRIMITIVE:
-                return primitiveTexture;
-            default:
-                return null;
-        }
+        return switch (variant) {
+            case BRONZE -> bronzeTexture;
+            case STEEL -> steelTexture;
+            case PRIMITIVE -> primitiveTexture;
+            default -> null;
+        };
     }
 
     public AdaptableUITexture getAdaptable(SteamVariant variant) {
-        switch (variant) {
-            case BRONZE:
-                return (AdaptableUITexture) bronzeTexture;
-            case STEEL:
-                return (AdaptableUITexture) steelTexture;
-            case PRIMITIVE:
-                return (AdaptableUITexture) primitiveTexture;
-            default:
-                return null;
-        }
+        return switch (variant) {
+            case BRONZE -> (AdaptableUITexture) bronzeTexture;
+            case STEEL -> (AdaptableUITexture) steelTexture;
+            case PRIMITIVE -> (AdaptableUITexture) primitiveTexture;
+            default -> null;
+        };
     }
 
     public UITexture get(boolean isHighPressure) {
diff --git a/src/main/java/gregtech/api/gui/widgets/GT_GuiIcon.java b/src/main/java/gregtech/api/gui/widgets/GT_GuiIcon.java
index 01c8671678..cb149547b4 100644
--- a/src/main/java/gregtech/api/gui/widgets/GT_GuiIcon.java
+++ b/src/main/java/gregtech/api/gui/widgets/GT_GuiIcon.java
@@ -119,10 +119,8 @@ public enum GT_GuiIcon implements IGuiIcon {
         if (location == null || location.length == 0) return;
 
         int startIndex = TEXTURES.length;
-        TEXTURES = (ResourceLocation[]) Arrays.copyOf(TEXTURES, location.length);
-        for (int i = 0; i < location.length; i++) {
-            TEXTURES[startIndex + i] = location[i];
-        }
+        TEXTURES = Arrays.copyOf(TEXTURES, location.length);
+        System.arraycopy(location, 0, TEXTURES, startIndex + 0, location.length);
     }
 
     @Override
diff --git a/src/main/java/gregtech/api/gui/widgets/GT_GuiTabLine.java b/src/main/java/gregtech/api/gui/widgets/GT_GuiTabLine.java
index 9caf51cd4b..01a0f3c8b1 100644
--- a/src/main/java/gregtech/api/gui/widgets/GT_GuiTabLine.java
+++ b/src/main/java/gregtech/api/gui/widgets/GT_GuiTabLine.java
@@ -34,7 +34,7 @@ public class GT_GuiTabLine {
     /**
      * Controls the rendering style of the tab line
      */
-    public static enum DisplayStyle {
+    public enum DisplayStyle {
 
         NONE((byte) 0),
         NORMAL((byte) 1),
@@ -189,9 +189,9 @@ public class GT_GuiTabLine {
      * @param mouseY
      */
     protected void drawOverlays(float parTicks, int mouseX, int mouseY) {
-        for (int i = 0; i < mTabs.length; i++) {
-            if (mTabs[i] != null) {
-                mTabs[i].drawOverlays(mouseX, mouseY, parTicks);
+        for (GT_GuiTab mTab : mTabs) {
+            if (mTab != null) {
+                mTab.drawOverlays(mouseX, mouseY, parTicks);
             }
         }
     }
@@ -204,9 +204,9 @@ public class GT_GuiTabLine {
      * @param mouseY
      */
     protected void drawBackground(float parTicks, int mouseX, int mouseY) {
-        for (int i = 0; i < mTabs.length; i++) {
-            if (mTabs[i] != null) {
-                mTabs[i].drawBackground(mouseX, mouseY, parTicks);
+        for (GT_GuiTab mTab : mTabs) {
+            if (mTab != null) {
+                mTab.drawBackground(mouseX, mouseY, parTicks);
             }
         }
     }
diff --git a/src/main/java/gregtech/api/gui/widgets/GT_GuiTooltip.java b/src/main/java/gregtech/api/gui/widgets/GT_GuiTooltip.java
index 1162630d5e..326e744382 100644
--- a/src/main/java/gregtech/api/gui/widgets/GT_GuiTooltip.java
+++ b/src/main/java/gregtech/api/gui/widgets/GT_GuiTooltip.java
@@ -2,7 +2,6 @@ package gregtech.api.gui.widgets;
 
 import java.awt.Rectangle;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 
@@ -44,10 +43,10 @@ public class GT_GuiTooltip {
 
     private TooltipData sanitizeTooltipData(TooltipData data) {
         if (data.text == null) {
-            data.text = Arrays.asList(new String[0]);
+            data.text = Collections.emptyList();
         }
         if (data.shiftText == null) {
-            data.shiftText = Arrays.asList(new String[0]);
+            data.shiftText = Collections.emptyList();
         }
         return data;
     }
@@ -97,10 +96,10 @@ public class GT_GuiTooltip {
         List<String> list;
         if (text != null) {
             list = new ArrayList<>(text.length);
-            for (int i = 0; i < text.length; i++) {
-                if (text[i] == null) continue;
-                if (list.isEmpty()) list.add("\u00a7f" + text[i]);
-                else list.add("\u00a77" + text[i]);
+            for (String s : text) {
+                if (s == null) continue;
+                if (list.isEmpty()) list.add("\u00a7f" + s);
+                else list.add("\u00a77" + s);
             }
         } else {
             list = Collections.emptyList();