Create Thread without extending Thread and implementing Runnable

1. Introduction

In this quick article, You'll learn how to create a thread without extending the Thread class and implementing the Runnable interface.

2. Create Thread Without Extending Thread Class - Anonymous Thread 

package com.javaprogramto.threads;

public class AnonymousThreadExample {
    public static void main(String[] args) {
        new Thread() {

            public void run() {

                for (int i = 0; i <= 10; i++) {
                    System.out.println(
                            "Executing " + i + " thread name - " + Thread.currentThread().getName());
                }

            }

        }.start();

        for (int i = 0; i <= 10; i++) {
            System.out.println(
                    "Executing " + i + " thread name - " + Thread.currentThread().getName());
        }
    }
}

Output:

Executing 0 thread name - main

Executing 0 thread name - Thread-0

Executing 1 thread name - main

Executing 1 thread name - Thread-0

Executing 2 thread name - main

Executing 2 thread name - Thread-0

Executing 3 thread name - main

Executing 3 thread name - Thread-0

Executing 4 thread name - main

Executing 4 thread name - Thread-0

Executing 5 thread name - main

Executing 5 thread name - Thread-0

Executing 6 thread name - main

Executing 6 thread name - Thread-0

Executing 7 thread name - main

Executing 7 thread name - Thread-0

Executing 8 thread name - main

Executing 8 thread name - Thread-0

Executing 9 thread name - main

Executing 9 thread name - Thread-0

Executing 10 thread name - main

Executing 10 thread name - Thread-0

3. Create Thread Without Implementing Runnable Interface - Anonymous Runnable 

package com.javaprogramto.threads;

public class AnonymousRunnableExample {

    public static void main(String[] args) {

        new Thread(new Runnable() {

            @Override

            public void run() {

                for (int i = 0; i <= 10; i++) {

                    System.out.println(

                            "Executing " + i + " thread name - " + Thread.currentThread().getName());

                }

            }

        }).start();



        for (int i = 0; i <= 10; i++) {

            System.out.println(

                    "Executing " + i + " thread name - " + Thread.currentThread().getName());

        }

    }

}

Output:

Executing 0 thread name - Thread-0

Executing 0 thread name - main

Executing 1 thread name - Thread-0

Executing 1 thread name - main

Executing 2 thread name - Thread-0

Executing 2 thread name - main

Executing 3 thread name - Thread-0

Executing 3 thread name - main

Executing 4 thread name - Thread-0

Executing 4 thread name - main

Executing 5 thread name - Thread-0

Executing 5 thread name - main

Executing 6 thread name - Thread-0

Executing 6 thread name - main

Executing 7 thread name - Thread-0

Executing 7 thread name - main

Executing 8 thread name - Thread-0

Executing 8 thread name - main

Executing 9 thread name - Thread-0

Executing 9 thread name - main

Executing 10 thread name - Thread-0

Executing 10 thread name - main

4. Conclusion

In this article, You have seen how to create a thread without using Thread and Runnable.

Examples to create a thread using Anonymous Implementations.

As usual, All examples are over GitHub.

Thread API
Runnable API

Creating Thread

Ref