Book_366_7_20

상속

 

class Parent1{

int x=100;

 

void method() {

System.out.println("Parent Method");

}

}

 

 

class Child1 extends Parent1{

int x=200;

 

void method() {

System.out.println("x="+x);  //this.x와 같다

System.out.println("super.x= "+super.x);

System.out.println("this.x= "+this.x);

}

}

 

 

public class Book_366_7_20 {

 

public static void main(String[] args) {

 

Parent1 p=new Child1();

Child1 c=new Child1();

 

System.out.println("p.x= "+p.x);

p.method();

System.out.println();

System.out.println("c.x= "+c.x);

c.method();

}

}

 

//결과

p.x= 100

x=200

super.x= 100

this.x= 200

 

c.x= 200

x=200

super.x= 100

this.x= 200