Uniqueness

example.java

  // Check out Uniqueness API: https://github.com/jotak/jmisc/tree/master/jotak-misc/src/main/java/com/jotak/misc/collection

  // Build a collection with removed duplicates on a custom criteria, regardless the "equals" and "hashCode" of the data object
  // Here we build a "unique key" based on Something::getField1
  final List<Something> allFields = Uniqueness.from(inputList)
          .constraintOn(ImmutableList.of(Something::getField1))
          .asList();
          
          
  
    private static final class Something {
        private final int field1;
        private final int field2;

        private Something(final int field1, final int field2) {
            this.field1 = field1;
            this.field2 = field2;
        }

        public int getField1() {
            return field1;
        }

        public int getField2() {
            return field2;
        }
    }

Check out Uniqueness API: https://github.com/jotak/jmisc/tree/master/jotak-misc/src/main/java/com/jotak/misc/collection