jonaslindmark · January 14, 2016 15:11 · Jan 14, 2016
diff --git a/Test.java b/Test.java
@@ -0,0 +1,50 @@
+import static com.google.common.base.Preconditions.checkArgument;
+
+public class MyObject {
+  public final String name;
+  public final String wat;
+
+  private MyObject(String name, String wat) {
+    this.name = name;
+    this.wat = wat;
+  }
+
+  public static BuildName newBuilder() {
+    return new Builder();
+  }
+
+  public interface BuildObj {
+    MyObject build();
+  }
+
+  public interface BuildName {
+    BuildWat setName(String name);
+  }
+
+  public interface BuildWat {
+    BuildObj setWat(String name);
+  }
+
+  public static class Builder implements BuildWat, BuildName, BuildObj {
+    private String name;
+    private String wat;
+
+    private Builder() {}
+
+    public BuildWat setName(String name) {
+      checkArgument(name != null);
+      this.name = name;
+      return this;
+    }
+
+    public BuildObj setWat(String wat) {
+      checkArgument(wat != null);
+      this.wat = wat;
+      return this;
+    }
+
+    public MyObject build() {
+      return new MyObject(name, wat);
+    }
+  }
+}