/**

  * 多线程并发安全问题

 */

 public class ThreadDemo05 {

     public static String name = "马冬梅";

     public static String gender = "女";

     public static void main(String[] args) {

         new Thread(new PrintThread()).start();

         new Thread(new ChangeThread()).start();

     }

 }

 class ChangeThread extends Thread{

     @Override

     public void run() {

         while(true){

             if("马冬梅".equals(ThreadDemo05.name)){

                 ThreadDemo05.name = "夏洛";

                 ThreadDemo05.gender = "男";

             }else{

                 ThreadDemo05.name = "马冬梅";

                 ThreadDemo05.gender = "女";

             }

         }

     }

 }

 class PrintThread implements Runnable{

     @Override

     public void run() {

         while(true){

             System.out.println("姓名："+ThreadDemo05.name+",性别："+ThreadDemo05.gender);

         }

     }

 }