How to create multithreading in Java

1. Use thread directly to create

 Packagecom.test.tt; Public classThreadexextendsthread{Private intJ;  Public voidrun () { for(j=0; j<100;j++) {System.out.println ("The current thread name is:" + getName () + "+" The current value of J is: "+j); }    }         Public Static voidMain (string[] args) { for(inth=0; h<100;h++){                        if(h==20) {Threadex threadTest1=NewThreadex (); Threadex ThreadTest2=NewThreadex ();                Threadtest1.start ();            Threadtest2.start (); } System.out.println ("The current thread name is:" + thread.currentthread (). GetName () + "+" The value of the current H is: "+h); }            }}

2. By implementing the Runnable interface and creating the Runnable implementation object as the thread's target

 Packagecom.test.tt; Public classRunnableexImplementsrunnable{Private inti; @Override Public voidrun () { for(i=0; i<100;i++) {System.out.println ("The current thread name is:" + thread.currentthread (). GetName () + "+" The current value of I is: "+i); }            }     Public Static voidMain (string[] args) { for(intj=0;j<100;j++) {System.out.println ("The current thread name is:" + thread.currentthread (). GetName () + "+" The current value of I is: "+j); if(j==20) {Runnableex REx=NewRunnableex (); Thread Thread1=NewThread (REx, "instance 1"); Thread thread2=NewThread (REx, "Instance 2");                Thread1.start ();            Thread2.start (); }                                }    }}

3. Create by implementing the callable interface (this is how a return value is created)

 Packagecom.test.tt;Importjava.util.concurrent.Callable;ImportJava.util.concurrent.FutureTask; Public classCallableexImplementscallable{@Override PublicObject Call ()throwsException {intI =0;  for(; i<1000;i++) {System.out.println ("The current thread name is:" + thread.currentthread (). GetName () + "+" The current value of I is: "+i); }        returni; }     Public Static voidMain (string[] args) {//TODO auto-generated Method StubCallableex CEx=NewCallableex (); Futuretask<Integer> task =NewFuturetask<integer>(CEX);  for(intj=0;j<1000;j++) {System.out.println ("The current thread name is:" + thread.currentthread (). GetName () + "+" The current value of I is: "+j); if(j==200) {Thread thread1=NewThread (Task, "instance 1");            Thread1.start (); }                    }                Try{System.out.println ("Thread return value:" +task.get ()); }Catch(Exception ex) {ex.printstacktrace (); }    }}

How to create multithreading in Java