Java Java.lang.Thread.dumpStack()用法及代码示例

描述

这个java.lang.Thread.dumpStack() 方法将当前线程的堆栈跟踪打印到标准错误流。此方法仅用于调试。

声明

以下是声明java.lang.Thread.dumpStack()方法

public static void dumpStack()

参数

NA

返回值

此方法不返回任何值。

异常

NA

示例

下面的例子展示了 java.lang.Thread.dumpStack() 方法的用法。

package com.tutorialspoint;

import java.lang.*;

public class ThreadDemo {

   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();
   }
}

让我们编译并运行上面的程序，这将产生以下结果——

Thread = Thread[Admin Thread,1,main]
currently active threads = 1
java.lang.Exception:Stack trace
	at java.lang.Thread.dumpStack(Thread.java:1336)
	at com.tutorialspoint.ThreadDemo.main(ThreadDemo.java:23)