Why do you need runnable interface?

Answer 1

A Runnable Interface is one that is used to create a Java Thread...

A Thread can be created in two ways and using the Runnable Interface is one of them.

Example:

public class Test implements Runnable {

public void run(){

....

}

}

The Runnable interface would have an abstract instance of the method run() which needs to be implemented in the class which wants to create a Thread.

Answer 2

Runnable in java , is an interface which helps in creating threads.

E.g. you want to create thread Demo , then you will do like this

class Demo implement Runnable

{

// your code

}

Now to start thread in a program you have to do like this

/* create your thread class object

& then pass it to thread class constructor */

Demo dmo = new Demo();

Thread thrd = new Thread(dmo);

// call start() using thrd

thrd.start();

thats all . you can add additional code as your requirements

Answer 3

• Java Runnable Thread is a piece of the program execution.
• Java Runnable is an interface. Thread class implements it.
• Java has multithreading facility.
• Thread is also created by implementing the Runnable interface

Java Runnable Thread Example

public class runnable1 implements Runnable {

@Override

public void run() {

for (int x = 1; x <= 3; x++) {

System.out.println(x + " Thread name, priority and group are "

+ Thread.currentThread()); }

}

public static void main(String[] args) {

runnable1 run1 = new runnable1();

Thread t1 = new Thread(run1);

t1.start();

}

}

Answer 4

The Runnable Interface is used to create threads in Java. Implementing the Runnable interface gives you a way to extend any class you like, but still define behavior that will be run by a separate thread. It looks like this:

class MyFirstRunnableClass implements Runnable {

public void run() {

System.out.println("Imp job running in MyFirstRunnableClass");

}

}

Regardless of which mechanism you choose, you've now got yourself some code that can be run by a thread of execution. So now let's take a look at instantiating your thread-capable class, and then we'll figure out how to actually get the thing running.

Answer 5

Runnable is an interface in Java that is used to implement Multithreading in Java. This interface has a method run() which needs to be implemented by the class using this interface.

Answer 6

interface need for communication