Two ways to create threads in Java

1. Define the thread class that implements the Runnable interface, in the following steps:

(1) Create a thread class runner that implements the Runnable interface;

(2) rewrite the Run () method of the Runnable interface to define the running body of the thread; (Runnable interface has only one method)

(3) Instantiate thread class runner;

(4) Create the thread instance and pass the instance of the thread class runner to it as the parameter of the constructor function;

(5) Start thread;

The code looks like this:

1  Public classTestthread {2      Public Static voidMain (String args[]) {3Runner r =NewRunner ();//3. Instantiating thread classes runner4Thread thread =NewThread (R);//4. Create a thread instance and pass an instance of the thread class runner to it as a parameter to the constructor5Thread.Start ();//5. Start the thread6         7          for(inti=0; i<100; i++) {//main thread other code8System.out.println ("Main Thread:------" +i);9         }Ten     } One } A  - classRunnerImplementsRunnable {//1. Create a thread class that implements the Runnable interface runner -      Public voidRun () {//2. Override the Run method to define the running body of the thread the          for(inti=0; i<100; i++) {     -System.out.println ("Runner1:" +i); -         } -     } +}

2. Define a subclass that inherits from the thread class and override its Run method

(1) Create subclass Mythread class that inherits from thread class;

(2) rewrite its Run method to define the thread's running body;

(3) Instantiation line Cheng Zi class mythread;

(4) Start thread;

1  Public classTestthread {2      Public Static voidMain (String args[]) {3MyThread MyThread =NewMyThread ();//3. Instantiate line Cheng Zi class mythread4Mythread.start ();//4. Start the thread5         6          for(inti=0; i<100; i++) {//main thread other code7System.out.println ("Main Thread:------" +i);8         }9     }Ten } One  A classMyThreadextendsThread {//1. Create subclass Mythread class that inherits from the thread class -      Public voidRun () {//2. Override its Run method to define the thread's runtime -          for(inti=0; i<100; i++) {     theSystem.out.println ("Runner1:" +i); -         } -     } -}

Note: It is recommended to create threads in a way that implements the Runnable interface, because it is relatively flexible to implement other interfaces and inherit other classes

Two ways to create threads in Java