Java:使用匿名内部类在方法内部定义并启动线程
时间:2011-02-28 51cto博客 zhangjunhd
下面的代码展示了在一个方法中,通过匿名内部类定义一个Thread,并Override它的run()方法,之后直接启动该线程。
这样的代码可用于在一个类内部通过另起线程来执行一个支线任务,一般这样的任务并不是该类的主要设计内容。
package com.zj.concurrency;
public class StartFromMethod {
private Thread t;
private int number;
private int count = 1;
public StartFromMethod(int number) {
this.number = number;
}
public void runTask() {
if (t == null) {
t = new Thread() {
public void run() {
while (true) {
System.out.println("Thread-" + number + " run " + count
+ " time(s)");
if (++count == 3)
return;
}
}
};
t.start();
}
}
public static void main(String[] args) {
for (int i = 0; i < 5; i++)
new StartFromMethod(i).runTask();
}
}
结果:
Thread-0 run 1 time(s)
Thread-0 run 2 time(s)
Thread-1 run 1 time(s)
Thread-1 run 2 time(s)
Thread-2 run 1 time(s)
Thread-2 run 2 time(s)
Thread-3 run 1 time(s)
Thread-3 run 2 time(s)
Thread-4 run 1 time(s)
Thread-4 run 2 time(s)
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