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。

声明

以下是java.lang.Thread.dumpStack()方法的声明

public static void dumpStack()

参数

• NA

返回值

此方法不返回任何值。

异常

• NA

例子

下面的例子显示java.lang.Thread.dumpStack()方法的使用。

package com.yiibai;

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();
   }
}

让我们来编译和运行上面的程序，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:1266)
at CheckAccess.main(CheckAccess.java:15)