Type Notation.
DateType : This can use to format Date format.
EntityType : This is to configure property as Entity Type. should provide name.
FieldAlias : This is to represent alias for property. if not lib will create camel case property name.
IgnoreDiff : Can ignore diff.
ObjectDiffType : Can provide custom ObjectDiffPrinter.
ParentDiff : can provide no of parent to consider or ignore parent diff.
ValueEvaluator : default value evaluate through bject equal method. can provide custom ValueEvaluator.
ValueOutput : Can provide custom ValueOutputHandler.
Process
To generate DIFF :
DiffBuilder builder = new DiffBuilder();
builder.diff(user1, user2);
Through builder you can get String diff or DiffObject which contain fields. Also you can add custom type through builder which effect to whole diff process.