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Copy pathRun6_waitOld.java
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52 lines (46 loc) · 1.51 KB
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package com.brianway.learning.java.multithread.communication.example6;
/**
* Created by Brian on 2016/4/14.
*/
/**
* P155
* wait等待条件变化
*/
public class Run6_waitOld {
public static void main(String[] args) throws InterruptedException {
String lock = new String("");
Add add = new Add(lock);
Subtract sub = new Subtract(lock);
ThreadSubtract subtract1 = new ThreadSubtract("sub1", sub);
subtract1.start();
ThreadSubtract subtract2 = new ThreadSubtract("sub2", sub);
subtract2.start();
Thread.sleep(1000);
ThreadAdd addThread = new ThreadAdd("add1", add);
addThread.start();
}
}
/*
输出：
begin wait(),ThreadName=sub1
begin wait(),ThreadName=sub2
end wait(), ThreadName=sub2
list size = 0
end wait(), ThreadName=sub1
Exception in thread "sub1" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.rangeCheck(ArrayList.java:653)
at java.util.ArrayList.remove(ArrayList.java:492)
at com.brianway.learning.java.multithread.communication.example6.Subtract.subtract(Subtract.java:22)
at com.brianway.learning.java.multithread.communication.example6.ThreadSubtract.run(ThreadSubtract.java:16)
----------------------------
Subtract类使用while而不是if的话
while(ValueObject.list.size() == 0){
//if(ValueObject.list.size() == 0){
输出：
begin wait(),ThreadName=sub1
begin wait(),ThreadName=sub2
end wait(), ThreadName=sub2
list size = 0
end wait(), ThreadName=sub1
begin wait(),ThreadName=sub1
*/