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test39.java
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49 lines (46 loc) · 1.29 KB
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package byteDance;
/**
* Created by lizeyang on 2020/5/15.
* 三个线程循环打印ABC
*/
public class test39 extends Thread{
//第一种实现方式:sleep方法
private static int count = 0;
public test39(String name){
this.setName(name);
}
@Override
public void run(){
while(count<30){
switch(count%3){
case 0 :
if("A".equals(getName())){
printAndIncrease();
}
break;
case 1:
if("B".equals(getName())){
printAndIncrease();
}
break;
case 2:
if("C".equals(getName())){
printAndIncrease();
}
break;
}
}
}
public void printAndIncrease(){
System.out.println(getName());
count++;
}
public static void main(String[] args) {
new test39("A").start();
new test39("B").start();
new test39("C").start();
}
//第二种实现是synchronized配合wait和notifyAll，代码比较复杂，不再实现
//第三种是lock和condition,见test40
//第四种是使用AtomicInteger，也不再实现
}