inheritance.java~1~

来自「提供了常用的JAVA技术的示例」· JAVA~1~ 代码 · 共 41 行

package Inheritance;
class A{
    int i,j;
    A(int i,int j){
      this.i=i;
      this.j=j;
    }
    int multiply(){
      return i*j;
    }
}
class B extends A{
    int i,k;
    B(int i0,int i1,int j,int k){ //i0=2 i1=6 j=8 k=9
        super(i0,j);
            this.i=i1;
            this.k=k;
    }
    void show(){
        System.out.println("super.i="+super.i);
        System.out.println("super.j="+super.j);
        System.out.println("i="+i);
        System.out.println("j="+j);
        System.out.println("k="+k);
        System.out.println("super.multiply()="+super.multiply());
    }
    int multiply(){
        int m0=super.multiply();
        return m0*i*k;
    }
}
public class Inheritance {
    public static void main(String a[]) {
        B subo=new B(2,6,8,9);
        subo.show();

        //System.out.println("super.multiply()="+super.multiply());
        System.out.println("subo.multiply() ="+subo.multiply());

  }
}