super关键字的使用

super关键字的使用

TestInherit.java

//super关键字
class FatherClass {
    public int value;
    public void f(){
        value = 100;
        System.out.println
        ("FatherClass.value="+value);
    }
}

class ChildClass extends FatherClass {
    public int value;
    public void f() {
        super.f();//super调用父类的f()方法
        value = 200;
        System.out.println
             ("ChildClass.value="+value);
        System.out.println(value);
        System.out.println(super.value);
    }
}

public class TestInherit {
	public static void main(String[] args) {
		ChildClass cc = new ChildClass();
		cc.f();
	}
}

F:\java>javac TestInherit.java

F:\java>java TestInherit
FatherClass.value=100
ChildClass.value=200
200
100

F:\java>

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