import java.util.List; public class SuperBuilderWithDefaults { public static class Parent { private long millis; private N numberField; @java.lang.SuppressWarnings("all") private static long $default$millis() { return System.currentTimeMillis(); } @java.lang.SuppressWarnings("all") private static N $default$numberField() { return null; } @java.lang.SuppressWarnings("all") public static abstract class ParentBuilder, B extends ParentBuilder> { @java.lang.SuppressWarnings("all") private boolean millis$set; @java.lang.SuppressWarnings("all") private long millis$value; @java.lang.SuppressWarnings("all") private boolean numberField$set; @java.lang.SuppressWarnings("all") private N numberField$value; @java.lang.SuppressWarnings("all") protected abstract B self(); @java.lang.SuppressWarnings("all") public abstract C build(); @java.lang.SuppressWarnings("all") public B millis(final long millis) { this.millis$value = millis; millis$set = true; return self(); } @java.lang.SuppressWarnings("all") public B numberField(final N numberField) { this.numberField$value = numberField; numberField$set = true; return self(); } @java.lang.Override @java.lang.SuppressWarnings("all") public java.lang.String toString() { return "SuperBuilderWithDefaults.Parent.ParentBuilder(millis$value=" + this.millis$value + ", numberField$value=" + this.numberField$value + ")"; } } @java.lang.SuppressWarnings("all") private static final class ParentBuilderImpl extends ParentBuilder, ParentBuilderImpl> { @java.lang.SuppressWarnings("all") private ParentBuilderImpl() { } @java.lang.Override @java.lang.SuppressWarnings("all") protected ParentBuilderImpl self() { return this; } @java.lang.Override @java.lang.SuppressWarnings("all") public Parent build() { return new Parent(this); } } @java.lang.SuppressWarnings("all") protected Parent(final ParentBuilder b) { if (b.millis$set) this.millis = b.millis$value; else this.millis = Parent.$default$millis(); if (b.numberField$set) this.numberField = b.numberField$value; else this.numberField = Parent.$default$numberField(); } @java.lang.SuppressWarnings("all") public static ParentBuilder builder() { return new ParentBuilderImpl(); } } public static class Child extends Parent { private double doubleField; @java.lang.SuppressWarnings("all") private static double $default$doubleField() { return Math.PI; } @java.lang.SuppressWarnings("all") public static abstract class ChildBuilder> extends Parent.ParentBuilder { @java.lang.SuppressWarnings("all") private boolean doubleField$set; @java.lang.SuppressWarnings("all") private double doubleField$value; @java.lang.Override @java.lang.SuppressWarnings("all") protected abstract B self(); @java.lang.Override @java.lang.SuppressWarnings("all") public abstract C build(); @java.lang.SuppressWarnings("all") public B doubleField(final double doubleField) { this.doubleField$value = doubleField; doubleField$set = true; return self(); } @java.lang.Override @java.lang.SuppressWarnings("all") public java.lang.String toString() { return "SuperBuilderWithDefaults.Child.ChildBuilder(super=" + super.toString() + ", doubleField$value=" + this.doubleField$value + ")"; } } @java.lang.SuppressWarnings("all") private static final class ChildBuilderImpl extends ChildBuilder { @java.lang.SuppressWarnings("all") private ChildBuilderImpl() { } @java.lang.Override @java.lang.SuppressWarnings("all") protected ChildBuilderImpl self() { return this; } @java.lang.Override @java.lang.SuppressWarnings("all") public Child build() { return new Child(this); } } @java.lang.SuppressWarnings("all") protected Child(final ChildBuilder b) { super(b); if (b.doubleField$set) this.doubleField = b.doubleField$value; else this.doubleField = Child.$default$doubleField(); } @java.lang.SuppressWarnings("all") public static ChildBuilder builder() { return new ChildBuilderImpl(); } } public static void test() { Child x = Child.builder().doubleField(0.1).numberField(5).millis(1234567890L).build(); } }