make private fields final where possible (#2028)

5 files changed, 22 insertions, 16 deletions

diff --git a/src/main/java/gregtech/api/gui/widgets/GT_GuiCoverTabLine.java b/src/main/java/gregtech/api/gui/widgets/GT_GuiCoverTabLine.java
index 890e6298c9..d52b09b9d5 100644
--- a/src/main/java/gregtech/api/gui/widgets/GT_GuiCoverTabLine.java
+++ b/src/main/java/gregtech/api/gui/widgets/GT_GuiCoverTabLine.java
@@ -30,10 +30,10 @@ public class GT_GuiCoverTabLine extends GT_GuiTabLine {
         "GT5U.interface.coverTabs.north", "GT5U.interface.coverTabs.south", "GT5U.interface.coverTabs.west",
         "GT5U.interface.coverTabs.east" };
 
-    // Not sure there's a point in JIT translation but that's what this is
-    private String[] translatedSides;
-    private IGregTechTileEntity tile;
-    private int colorization;
+    // Not sure if there's a point in JIT translation but that's what this is
+    private final String[] translatedSides;
+    private final IGregTechTileEntity tile;
+    private final int colorization;
 
     /**
      * Let's you access an IGregTechTileEntity's covers as tabs on the GUI's sides
diff --git a/src/main/java/gregtech/api/gui/widgets/GT_GuiFakeItemButton.java b/src/main/java/gregtech/api/gui/widgets/GT_GuiFakeItemButton.java
index 0f6a1c9f41..b534359cac 100644
--- a/src/main/java/gregtech/api/gui/widgets/GT_GuiFakeItemButton.java
+++ b/src/main/java/gregtech/api/gui/widgets/GT_GuiFakeItemButton.java
@@ -18,7 +18,7 @@ public class GT_GuiFakeItemButton implements IGuiScreen.IGuiElement {
 
     private GT_GuiIcon bgIcon;
     private ItemStack item;
-    private IGuiScreen gui;
+    private final IGuiScreen gui;
     private int xPosition, yPosition;
     private List<String> itemTooltips;
     private final GT_GuiTooltip tooltip = new GT_GuiTooltip(null) {
diff --git a/src/main/java/gregtech/api/gui/widgets/GT_GuiIconButton.java b/src/main/java/gregtech/api/gui/widgets/GT_GuiIconButton.java
index 555d063a3b..62d6648e73 100644
--- a/src/main/java/gregtech/api/gui/widgets/GT_GuiIconButton.java
+++ b/src/main/java/gregtech/api/gui/widgets/GT_GuiIconButton.java
@@ -15,7 +15,8 @@ public class GT_GuiIconButton extends GuiButton implements IGuiScreen.IGuiElemen
     public static final int DEFAULT_HEIGHT = 16;
 
     protected GT_GuiIcon icon;
-    private int x0, y0;
+    private final int x0;
+    private final int y0;
     protected IGuiScreen gui;
 
     private GT_GuiTooltip tooltip;
diff --git a/src/main/java/gregtech/api/gui/widgets/GT_GuiTab.java b/src/main/java/gregtech/api/gui/widgets/GT_GuiTab.java
index 556de34395..151eba2936 100644
--- a/src/main/java/gregtech/api/gui/widgets/GT_GuiTab.java
+++ b/src/main/java/gregtech/api/gui/widgets/GT_GuiTab.java
@@ -23,12 +23,12 @@ public class GT_GuiTab {
     public boolean visible = true, mousedOver, enabled = true;
 
     private Rectangle bounds;
-    private GT_GuiTabIconSet tabBackground;
-    private ItemStack item;
-    private GT_ITabRenderer gui;
+    private final GT_GuiTabIconSet tabBackground;
+    private final ItemStack item;
+    private final GT_ITabRenderer gui;
     private GT_GuiTooltip tooltip;
-    private IGuiIcon overlay;
-    private boolean flipHorizontally;
+    private final IGuiIcon overlay;
+    private final boolean flipHorizontally;
 
     /**
      * A tab to be attached to a tab line
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 bc9f4437d7..74145463b3 100644
--- a/src/main/java/gregtech/api/gui/widgets/GT_GuiTabLine.java
+++ b/src/main/java/gregtech/api/gui/widgets/GT_GuiTabLine.java
@@ -40,7 +40,7 @@ public class GT_GuiTabLine {
         NORMAL((byte) 1),
         INVERSE((byte) -1);
 
-        private byte value;
+        private final byte value;
 
         DisplayStyle(byte value) {
             this.value = value;
@@ -75,16 +75,21 @@ public class GT_GuiTabLine {
     // The tabs are arranged according to their index in this array
     protected final GT_GuiTab[] mTabs;
 
-    private int tabLineLeft, tabLineTop, tabHeight, tabWidth, tabSpacing;
+    private final int tabLineLeft;
+    private final int tabLineTop;
+    private final int tabHeight;
+    private final int tabWidth;
+    private final int tabSpacing;
 
     // In which direction to draw the tab line
-    private DisplayStyle xDir, yDir;
+    private final DisplayStyle xDir;
+    private final DisplayStyle yDir;
 
     // Whether to display on the right side of the GT_ITabRenderer instead of left
     protected boolean flipHorizontally, visible;
 
-    private GT_GuiTabIconSet tabBackground;
-    private GT_ITabRenderer gui;
+    private final GT_GuiTabIconSet tabBackground;
+    private final GT_ITabRenderer gui;
 
     /**
      * Draws clickable and configurable tabs on the left or right side of a GT_ITabRenderer