Java - Threads in Java

In this section, you will learn how to use the threads in java.

Java - Threads in Java


Thread is the feature of mostly languages including Java. Threads allow the program to perform multiple tasks simultaneously. Process speed can be increased by using threads because the thread can stop or suspend a specific running process and start or resume the suspended processes. Multitasking or multiprogramming is delivered through the running of multiple threads concurrently. If your computer does not have multi-processors then the multi-threads really do not run concurrently.

This example illustrates how to create a thread and how to implement the thread. In this example we will see that the program prints numbers from 1 to 10 line by line after 5 seconds which has been declared in the sleep function of the thread class. Sleep function contains the sleeping time in millisecond and in this program sleep function has contained 5000 millisecond mean 5 second time. There is sleep function must caught by the InterruptedException. So, this program used the InterruptedException which tells something the user if thread is failed or interrupted.

Here is the code of the program : 

public class Threads{
 public static void main(String[] args){
  Thread th =
 new Thread();
  System.out.println("Numbers are printing line by line after 5 seconds : ");
  for(int i = 1;i <= 10;i++)
  catch(InterruptedException e){
  System.out.println("Thread interrupted!");

Download this example.