1.7.7释放锁的不良后果

 1 package com.cky.bean;
 2 
 3 /**
 4  * Created by edison on 2017/12/3.
 5  */
 6 public class SynchroizeObject {
 7     private String usrname="a";
 8     private String pwd ="aa";
 9 
10     public String getUsrname() {
11         return usrname;
12     }
13 
14     public void setUsrname(String usrname) {
15         this.usrname = usrname;
16     }
17 
18     public String getPwd() {
19         return pwd;
20     }
21 
22     public void setPwd(String pwd) {
23         this.pwd = pwd;
24     }
25 
26     synchronized  public void printString(String usrname, String pwd) {
27         try {
28             this.usrname = usrname;
29             Thread.sleep(100000);
30             this.pwd = pwd;
31         } catch (InterruptedException e) {
32             e.printStackTrace();
33         }
34     }
35 }

 1 package com.cky.thread;
 2 
 3 import com.cky.bean.SynchroizeObject;
 4 
 5 /**
 6  * Created by edison on 2017/12/3.
 7  */
 8 public class MyThread extends Thread{
 9     private SynchroizeObject so;
10     public MyThread (SynchroizeObject so) {
11         super();
12         this.so = so;
13     }
14     @Override
15     public void run() {
16        so.printString("b","bb");
17     }
18 }

package com.cky.test;

import com.cky.bean.SynchroizeObject;
import com.cky.thread.MyThread;

/**
 * Created by edison on 2017/12/3.
 */
public class Test {
    public static void main(String[] args) {
        try {
            SynchroizeObject so = new SynchroizeObject();
            MyThread myThread = new MyThread(so);
            myThread.start();
            Thread.sleep(2000);
            myThread.stop();
            System.out.println(so.getUsrname()+ "..."+ so.getPwd());
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}

C:\itsoft\jdk\bin\java -Didea.launcher.port=7532 "-Didea.launcher.bin.path=C:\itsoft\idea\IntelliJ IDEA 2016.3.3\bin" -Dfile.encoding=UTF-8 -classpath "C:\itsoft\jdk\jre\lib\charsets.jar;C:\itsoft\jdk\jre\lib\deploy.jar;C:\itsoft\jdk\jre\lib\ext\access-bridge-32.jar;C:\itsoft\jdk\jre\lib\ext\cldrdata.jar;C:\itsoft\jdk\jre\lib\ext\dnsns.jar;C:\itsoft\jdk\jre\lib\ext\jaccess.jar;C:\itsoft\jdk\jre\lib\ext\jfxrt.jar;C:\itsoft\jdk\jre\lib\ext\localedata.jar;C:\itsoft\jdk\jre\lib\ext\nashorn.jar;C:\itsoft\jdk\jre\lib\ext\sunec.jar;C:\itsoft\jdk\jre\lib\ext\sunjce_provider.jar;C:\itsoft\jdk\jre\lib\ext\sunmscapi.jar;C:\itsoft\jdk\jre\lib\ext\sunpkcs11.jar;C:\itsoft\jdk\jre\lib\ext\zipfs.jar;C:\itsoft\jdk\jre\lib\javaws.jar;C:\itsoft\jdk\jre\lib\jce.jar;C:\itsoft\jdk\jre\lib\jfr.jar;C:\itsoft\jdk\jre\lib\jfxswt.jar;C:\itsoft\jdk\jre\lib\jsse.jar;C:\itsoft\jdk\jre\lib\management-agent.jar;C:\itsoft\jdk\jre\lib\plugin.jar;C:\itsoft\jdk\jre\lib\resources.jar;C:\itsoft\jdk\jre\lib\rt.jar;C:\多线程核心技术\第一章\out\production\第一章;C:\itsoft\idea\IntelliJ IDEA 2016.3.3\lib\idea_rt.jar" com.intellij.rt.execution.application.AppMain com.cky.test.Test
b...aa

Process finished with exit code 0