Implement the runnable interface

Realization Runnable Interface

//  Create thread 2：  Realization Runnable Interface , rewrite run() Method , The execution thread needs to drop runnable Interface implementation class , call start() Method .
public class TestThread3 implements Runnable {
    
    @Override
    public void run() {
    
        for (int i = 0; i < 100; i++) {
    
            // run Method thread body 
            System.out.println(" I'm looking at the code -----" + i);
        }
    }

    public static void main(String[] args) {
    
        //  establish Runnable Implementation class object of interface 
        TestThread3 testThread3 = new TestThread3();
        //  Create thread , Object starts a thread through a thread object 
// Thread thread = new Thread(testThread3);
// thread.start();

        new Thread(testThread3).start();
        
        for (int i = 0; i < 1000; i++) {
    
            System.out.println(" I'm learning multithreading -----" + i);
        }
    }
}

Summary

• Inherit Threa class

  • A subclass inherits Thread Class has multithreading capabilities
  • Start thread ： Subclass object .start()
  • Not recommended ： avoid OOP Limitations of single inheritance

• Realization Runnable Interface

  • Implementation interface Runnable Multithreading capability
  • Start thread ： Incoming target object Thread object .start()
  • Recommended ： Avoid the limitations of single inheritance , Flexible and convenient , It is convenient to unify an object to be used by multiple threads