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Multithreading in java is a process of executing multiple threads simultaneously.
Thread is basically a lightweight sub-process, a smallest unit of processing. Multiprocessing and multithreading, both are used to achieve multitasking. But we use multithreading than multiprocessing because threads share a common memory area.
- In this example, we created 4 different threads and each one of them has a random sleep duration. The output show us these threads are being processed simultaneously.
/**
* Author : Berk Soysal
* ThreadExample.java
*/
package herrberk;
import java.util.Random;
public class ThreadExample implements Runnable {
String name;
int time;
Random r = new Random();
public ThreadExample(String s){
name=s;
time= r.nextInt(999);
}
public void run(){
try {
System.out.printf("%s is sleeping for %d \n",name,time);
Thread.sleep(time);
System.out.printf("%s just woke up ! \n",name);
} catch (Exception e) {
System.out.println("Exception");
}
}
}
/**
* Author : Berk Soysal
* ThreadMain.java
*/
package herrberk;
public class ThreadMain {
public static void main(String[] args) {
Thread t1 = new Thread(new ThreadExample("One"));
Thread t2 = new Thread(new ThreadExample("Two"));
Thread t3 = new Thread(new ThreadExample("Three"));
Thread t4 = new Thread(new ThreadExample("Four"));
t1.start();
t2.start();
t3.start();
t4.start();
}
}
Please comment below if you have any questions. Thanks.
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