Using reflection

private Object copyFields(Object source, Object destination) throws Exception{
        Class sourceClass = source.getClass();
        Field[] fields = sourceClass.getDeclaredFields();
        Class destinationClass = destination.getClass();
        Field[] duplicateFields = destinationClass.getDeclaredFields();
//if source class and destination class are same do
        for (Field field : fields) {
            field.setAccessible(true);
            for ( Field duplicateField : duplicateFields) {
                duplicateField.setAccessible(true);
        //check value
        Object value = field.get(source);
        Object destinationValue = duplicateField.get(destination);
        //Compare values and set
                //duplicateField.set(destination,field.get(source));
            }
        }
        return destination;
    }