一、代碼如下

package www.wujianbotwo;import java.util.concurrent.locks.Lock;public class SafeDoor extends Door {@Override//public void close() {// TODO Auto-generated method stub//super.close();//}public void close() {// TODO Auto-generated method stubSystem.out.println("子類關(guān)閉");}public void closeTwo() {// TODO Auto-generated method stubsuper.close();}public void closeThre() {// TODO Auto-generated method stubthis.close();}public void lock() {// TODO Auto-generated method stubSystem.out.println("子類鎖門");}public void lock(int i) {// TODO Auto-generated method stubSystem.out.println("子類鎖門:" + i);}}

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package www.wujianbotwo;public class TestDoor {public static void main(String[] args) {// TODO Auto-generated method stubDoor door= new Door();//door.open();System.out.println(door.hashCode());SafeDoor sdoor= new SafeDoor();//sdoor.open();sdoor.lock();sdoor.close();sdoor.closeTwo();sdoor.closeThre();sdoor.lock(9);}}

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轉(zhuǎn)載于:https://www.cnblogs.com/wujianbo123/p/7492092.html

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