java 线程安全问题

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public class ThreadA  implements Runnable{     public static int number;     public String test;     @Override     public void run() {           while(true){             try {                 Thread.sleep(10000);             } catch (InterruptedException e) {                 e.printStackTrace();             }         }     } }

　　number是共享资源，属于非线程安全，test属于线程安全