public class Test {    
    enum EnumTest {
        VALUE1 {
            public EnumTest getValue() {
                return VALUE2.getValue().getValue();
            }
        },
        
        VALUE2 {
            public EnumTest getValue() {
                return VALUE1;
            }
        };
        
        abstract EnumTest getValue();
    }    
    
    public static void main(String... args) {
        System.out.println(EnumTest.VALUE1);
        System.out.println(EnumTest.VALUE2);
        System.out.println(EnumTest.VALUE1.getValue());
        System.out.println(EnumTest.VALUE2.getValue());
    }
}