• Skip to main content
  • Skip to primary sidebar
  • Skip to secondary sidebar
  • Skip to footer

Computer Notes

Library
    • Computer Fundamental
    • Computer Memory
    • DBMS Tutorial
    • Operating System
    • Computer Networking
    • C Programming
    • C++ Programming
    • Java Programming
    • C# Programming
    • SQL Tutorial
    • Management Tutorial
    • Computer Graphics
    • Compiler Design
    • Style Sheet
    • JavaScript Tutorial
    • Html Tutorial
    • Wordpress Tutorial
    • Python Tutorial
    • PHP Tutorial
    • JSP Tutorial
    • AngularJS Tutorial
    • Data Structures
    • E Commerce Tutorial
    • Visual Basic
    • Structs2 Tutorial
    • Digital Electronics
    • Internet Terms
    • Servlet Tutorial
    • Software Engineering
    • Interviews Questions
    • Basic Terms
    • Troubleshooting
Menu

Header Right

Home » Java » Multithreading » Write a program with join() and isAlive()
Next →
← Prev

Write a program with join() and isAlive()

By Dinesh Thakur

class NewThreadDemo implements Runnable

{
            Thread t;
            NewThreadDemo(String threadName)
      {
            t=new Thread(this, threadName);
            System.out.println(“New userdefined child thread created” +threadName);
            t.start();
       }

                 public void run()
            {
                try
                 {
                      for(int i = 1; i <=10; i++)
                       {
                           System.out.println(“Child Thread: [” +Thread.currentThread().getName()
+ “] ” + i);
                           Thread.sleep(500);
                        }
                  }
                      catch (InterruptedException e)
                         {
                              System.out.println(“UseDefine Child interrupted.”);
                          }
                      System.out.println(“Exiting UserDeinfed child thread.”);
               }
}
class MultiThreadDemo
      {
                    public static void main(String args[])
               {
                    NewThreadDemo ch1 = new NewThreadDemo(“Child_One”);
                    NewThreadDemo ch2 = new NewThreadDemo(“Child_Two”);
                    NewThreadDemo ch3 = new NewThreadDemo(“Child_Three”);
                    NewThreadDemo ch4 = new NewThreadDemo(“Child_FOur”);

                    System.out.println(“Child Thread One is alive: ” + ch1.t.isAlive());
                    System.out.println(“Child Thread Two is alive: “+ ch2.t.isAlive());
                    System.out.println(“Child Thread Three is alive: “+ ch3.t.isAlive());
                    System.out.println(“Child Thread Four is alive: “+ch4.t.isAlive());

                     try
                      {
                         System.out.println(“Waiting for child threads to finish.”);
                         ch1.t.join ();
                         ch2.t.join ();
                         ch3.t.join ();
                         ch4.t.join ();
                       }

                           catch (InterruptedException e)
                                {

                                     System.out.println(“Main thread Interrupted”);
                                }
                              System.out.println(“Child Thread One is alive: ” + ch1.t.isAlive());
                              System.out.println(“Child Thread Two is alive: “+ ch2.t.isAlive());
                              System.out.println(“Child Thread Three is alive: “+ ch3.t.isAlive());
                              System.out.println(“Child Thread Four is alive: “+ch4.t.isAlive());
                              System.out.println(“Main thread exiting.”);

                  }
      }

In the code all child thread are join(). If see the output, the main thread exited in the mid of the running code. It wait for all child to be exit. At last it exits from the code.

 

Output

 

join () and isAlive ()

You’ll also like:

  1. isAlive() and Join() Example in Java By Implementing Runnable Interface
  2. isAlive() and Join() Example in Java By Inheriting Thread Class
  3. isAlive() in Java Example
  4. isAlive() Example in Java
  5. Java isAlive() Example
Next →
← Prev
Like/Subscribe us for latest updates     

About Dinesh Thakur
Dinesh ThakurDinesh Thakur holds an B.C.A, MCDBA, MCSD certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps.

Dinesh Thakur is a Freelance Writer who helps different clients from all over the globe. Dinesh has written over 500+ blogs, 30+ eBooks, and 10000+ Posts for all types of clients.


For any type of query or something that you think is missing, please feel free to Contact us.


Primary Sidebar

Java Tutorials

Java Tutorials

  • Java - Home
  • Java - IDE
  • Java - Features
  • Java - History
  • Java - this Keyword
  • Java - Tokens
  • Java - Jump Statements
  • Java - Control Statements
  • Java - Literals
  • Java - Data Types
  • Java - Type Casting
  • Java - Constant
  • Java - Differences
  • Java - Keyword
  • Java - Static Keyword
  • Java - Variable Scope
  • Java - Identifiers
  • Java - Nested For Loop
  • Java - Vector
  • Java - Type Conversion Vs Casting
  • Java - Access Protection
  • Java - Implicit Type Conversion
  • Java - Type Casting
  • Java - Call by Value Vs Reference
  • Java - Collections
  • Java - Garbage Collection
  • Java - Scanner Class
  • Java - this Keyword
  • Java - Final Keyword
  • Java - Access Modifiers
  • Java - Design Patterns in Java

OOPS Concepts

  • Java - OOPS Concepts
  • Java - Characteristics of OOP
  • Java - OOPS Benefits
  • Java - Procedural Vs OOP's
  • Java - Polymorphism
  • Java - Encapsulation
  • Java - Multithreading
  • Java - Serialization

Java Operator & Types

  • Java - Operator
  • Java - Logical Operators
  • Java - Conditional Operator
  • Java - Assignment Operator
  • Java - Shift Operators
  • Java - Bitwise Complement Operator

Java Constructor & Types

  • Java - Constructor
  • Java - Copy Constructor
  • Java - String Constructors
  • Java - Parameterized Constructor

Java Array

  • Java - Array
  • Java - Accessing Array Elements
  • Java - ArrayList
  • Java - Passing Arrays to Methods
  • Java - Wrapper Class
  • Java - Singleton Class
  • Java - Access Specifiers
  • Java - Substring

Java Inheritance & Interfaces

  • Java - Inheritance
  • Java - Multilevel Inheritance
  • Java - Single Inheritance
  • Java - Abstract Class
  • Java - Abstraction
  • Java - Interfaces
  • Java - Extending Interfaces
  • Java - Method Overriding
  • Java - Method Overloading
  • Java - Super Keyword
  • Java - Multiple Inheritance

Exception Handling Tutorials

  • Java - Exception Handling
  • Java - Exception-Handling Advantages
  • Java - Final, Finally and Finalize

Data Structures

  • Java - Data Structures
  • Java - Bubble Sort

Advance Java

  • Java - Applet Life Cycle
  • Java - Applet Explaination
  • Java - Thread Model
  • Java - RMI Architecture
  • Java - Applet
  • Java - Swing Features
  • Java - Choice and list Control
  • Java - JFrame with Multiple JPanels
  • Java - Java Adapter Classes
  • Java - AWT Vs Swing
  • Java - Checkbox
  • Java - Byte Stream Classes
  • Java - Character Stream Classes
  • Java - Change Color of Applet
  • Java - Passing Parameters
  • Java - Html Applet Tag
  • Java - JComboBox
  • Java - CardLayout
  • Java - Keyboard Events
  • Java - Applet Run From CLI
  • Java - Applet Update Method
  • Java - Applet Display Methods
  • Java - Event Handling
  • Java - Scrollbar
  • Java - JFrame ContentPane Layout
  • Java - Class Rectangle
  • Java - Event Handling Model

Java programs

  • Java - Armstrong Number
  • Java - Program Structure
  • Java - Java Programs Types
  • Java - Font Class
  • Java - repaint()
  • Java - Thread Priority
  • Java - 1D Array
  • Java - 3x3 Matrix
  • Java - drawline()
  • Java - Prime Number Program
  • Java - Copy Data
  • Java - Calculate Area of Rectangle
  • Java - Strong Number Program
  • Java - Swap Elements of an Array
  • Java - Parameterized Constructor
  • Java - ActionListener
  • Java - Print Number
  • Java - Find Average Program
  • Java - Simple and Compound Interest
  • Java - Area of Rectangle
  • Java - Default Constructor Program
  • Java - Single Inheritance Program
  • Java - Array of Objects
  • Java - Passing 2D Array
  • Java - Compute the Bill
  • Java - BufferedReader Example
  • Java - Sum of First N Number
  • Java - Check Number
  • Java - Sum of Two 3x3 Matrices
  • Java - Calculate Circumference
  • Java - Perfect Number Program
  • Java - Factorial Program
  • Java - Reverse a String

Other Links

  • Java - PDF Version

Footer

Basic Course

  • Computer Fundamental
  • Computer Networking
  • Operating System
  • Database System
  • Computer Graphics
  • Management System
  • Software Engineering
  • Digital Electronics
  • Electronic Commerce
  • Compiler Design
  • Troubleshooting

Programming

  • Java Programming
  • Structured Query (SQL)
  • C Programming
  • C++ Programming
  • Visual Basic
  • Data Structures
  • Struts 2
  • Java Servlet
  • C# Programming
  • Basic Terms
  • Interviews

World Wide Web

  • Internet
  • Java Script
  • HTML Language
  • Cascading Style Sheet
  • Java Server Pages
  • Wordpress
  • PHP
  • Python Tutorial
  • AngularJS
  • Troubleshooting

 About Us |  Contact Us |  FAQ

Dinesh Thakur is a Technology Columinist and founder of Computer Notes.

Copyright © 2025. All Rights Reserved.

APPLY FOR ONLINE JOB IN BIGGEST CRYPTO COMPANIES
APPLY NOW