case

public abstract class Test {

    private String test1 = getTest1();

    public void test() {
        System.out.println(test1);
    }

    protected abstract String getTest1();
}


public class Test2 extends Test {

    public void show() {
        this.test();
    }

    public static void main(String... strings) {
        Test2 test2 = new Test2();
        test2.show();
    }

    @Override
    protected String getTest1() {
        // TODO Auto-generated method stub
        return "test";
    }

}

結果：
test

public enum Test3 {
    TEST33("123", "456");

    final private String name;
    private String       value;

    private Test3(String name, String value) {
        this.name = name;
        this.value = value;
    }

    public static void main(String... strings) {
        System.out.println(Test3.TEST33.name);
        System.out.println(Test3.TEST33.value);
    }
}