A thread is a thread of execution in a program. The JVM allows the multiple threads to run concurrently. The java.lang.Thread class has the following enhancements in 5.0:

• The priority handling has changed for the Thread.


• One enum class i.e. Thread.State is introduced and the new getState() API are provided for querying the execution state of a thread.


• getStackTrace and getAllStackTraces methods added in the Thread class to obtain the stack trace of a thread or all threads.


• The uncaughtExceptionHandler mechanism is also introduced in the Thread class.


• A new overloaded sleep() method is provided to allow the Thread to sleep smaller than one millisecond.

Example:-

A simple thread example to show the new method.

package com.visualbuilder;

public class ThreadExample extends Thread{
    Thread t;
    ThreadExample(){
        t= new Thread(this);
        t.start();
    }
  public void run()
    {
        System.out.println(t.getState().toString());
        System.out.println(t.getAllStackTraces());
    }   
  public static void main(String[] args) {
         new ThreadExample();

    }

}

Output:-

The following is the output of the program.