importjava.util.ArrayList;importjava.util.List;/*** Created by yanfazhongxin on 2020-04-22.
* 守护线程*/
public class加密解密 {public static voidmain(String[] args) {//两条线程谁启动先没有影响
Thread t2 = new Thread(newLog_thread());
t2.setDaemon(true);//设定为 守护线程
t2.start();
Thread t1= new Thread(newDecode());
t1.start();
}
}class Decode implementsRunnable {static List<String> list = new ArrayList<>();
String password= String.valueOf(random(4));public char[] random(intindex) {char[] re = new char[index];
Math.random();for (int i = 0; i < index; i++) {//指定随机范围 : 64-90
re[i] = (char) ((Math.random() * 26 + 64));
}returnre;
}
@Overridepublic voidrun() {
System.out.println("本次随机密码是:" +password);boolean cnt = true;while(cnt) {
String str= String.valueOf(random(4));if(str.equals(password)) {
System.out.println("匹配密码正确是:" +password);
list.add(str);
cnt= false;
}else
//System.out.println(str+" 匹配失败");
list.add(str);
}
}
}class Log_thread implementsRunnable {
@Overridepublic voidrun() {
System.out.println(" Log_thread implements");//for (int i = 0; i < Decode.list.size(); i++) {
while(true){if ((Decode.list == null)||(Decode.list.size()<1)) {try{
Thread.sleep(50);
}catch(InterruptedException e) {
e.printStackTrace();
}
}elseSystem.out.println(" 匹配的密码可能是:" + Decode.list.remove(0));
}
}
}