JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Java Daemon Thread Examples

  • You can make any java thread as daemon thread. Daemon threads acts like service providers for other threads running in the same process.
  • Daemon threads will be terminated by the JVM when there are none of the other threads running, it includs main thread of execution as well.
  • To specify that a thread is a daemon thread, call the setDaemon method with the argument true.
  • To determine if a thread is a daemon thread, use the accessor method isDaemon.

Daemon Thread Sample Code

package com.myjava.threads;

public class DaemonThread extends Thread{
    
    public DaemonThread(){
        setDaemon(true);
    }
    public void run(){
        System.out.println("Is this thread Daemon? - "+isDaemon());
    }
    public static void main(String a[]){
        DaemonThread dt = new DaemonThread();
        // even you can set daemon constrain here also
        // it is like dt.setDeamon(true)
        dt.start();
    }
}

Example Output

Is this thread Daemon? - true

Other Thread Examples

Knowledge Centre
What is abstract class or abstract method?
We cannot create instance for an abstract class. We can able to create instance for its subclass only. By specifying abstract keyword just before class, we can make a class as abstract class.

public abstract class MyAbstractClass{

}

Abstract class may or may not contains abstract methods. Abstract method is just method signature, it does not containes any implementation. Its subclass must provide implementation for abstract methods. Abstract methods are looks like as given below:

public abstract int getLength();
Famous Quotations
Insanity: doing the same thing over and over again and expecting different results.
-- Albert Einstein

About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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