Java Thread dumpStack()方法

java.lang.Thread.dumpStack() 方法打印当前线程的堆栈跟踪到标准错误流。此方法仅用于调试。

1 语法

public static void dumpStack()

2 参数

无

3 返回值

无

4 示例 

package com.yiidian;

/**
 * 一点教程网： http://www.yiidian.com
 */
/**
 * java.lang.Thread.dumpStack() 方法的例子
 */
import java.lang.*;

public class Demo {

    public static void main(String[] args) {

        Thread t = Thread.currentThread();
        t.setName("Admin Thread");

        // set thread priority to 1
        t.setPriority(1);

        // prints the current thread
        System.out.println("Thread = " + t);

        int count = Thread.activeCount();
        System.out.println("currently active threads = " + count);

      /* prints a stack trace of the current thread to the standard
         error stream, used for debugging */
        Thread.dumpStack();
    }
}

输出结果为：

Thread = Thread[Admin Thread,1,main]
currently active threads = 2
java.lang.Exception: Stack trace
	at java.lang.Thread.dumpStack(Thread.java:1329)
	at com.yiidian.Demo.main(Demo.java:29)