threads java

1Set<Thread> threadSet = Thread.getAllStackTraces().keySet();

1public class ClassName extends Thread{
2  public void run(){
3    super.run();
4    //Your Code
5  }
6}
7
8public class Main{
9  public static void main(String[] args){
10    ClassName thread = new ClassName();
11    thread.start();
12  }
13}

1// Copy and test
2// They run simultaneously
3
4public static void main(String[] args) {
5  		// How to create a thread
6        Thread thread = new Thread(new Runnable() {
7            @Override
8			// Loop running in thread
9            public void run() {
10                for (int i = 0; i < 20; i++) {
11                    System.out.println("Printing plus " + i + " in a worker thread.");
12                    try {
13                        Thread.sleep(1000);
14                    } catch(Exception e) {
15                        e.printStackTrace();
16                    }
17                }
18            }
19        });
20        thread.start();
21  		// Loop running in main thread 
22        for (int j = 0; j < 20 ; j++) {
23            System.out.println("Printing plus " + j + " in a main thread.");
24            try {
25                Thread.sleep(900);
26            } catch(Exception e) {
27                e.printStackTrace();
28            }
29        }
30        }

1class MultithreadingDemo extends Thread{  
2  public void run(){  
3    System.out.println("My thread is in running state.");  
4  }   
5  public static void main(String args[]){  
6     MultithreadingDemo obj=new MultithreadingDemo();   
7     obj.start();  
8  }  
9}

1public static void main(String[] args {
2   ...
3   Thread t1= new Thread(...);
4   t1.start();
5   ...
6}