【多線程】兩種方式創建線程

第一種方式：繼承Thread類

public class ThreadDemo extends Thread{
	
	@Override
	public void run(){
		
		int s = 0;
		while(true){
			
			int v = (int)(Math.random()*10);
			s += v;
			System.out.println(getName() + ": " + s);
			try {
				sleep(1000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			if(s > 50){
				System.out.println(getName() + ": " + "我贏了！！！");
				System.exit(0);
			}			 
		}	 
	}

	public static void main(String[] args) {
	
		ThreadDemo t1 = new ThreadDemo();
		ThreadDemo t2 = new ThreadDemo();
		ThreadDemo t3 = new ThreadDemo();
		
		t1.setName("1號");
		t2.setName("2號");
		t3.setName("3號");
		
		t1.start();
		t2.start();
		t3.start();
	}
	
}

第二種方式：實現Runnable接口

public class ThreadDemo implements Runnable{

	String name;
	Thread t;
	
	public ThreadDemo(){}
	
	public ThreadDemo(String name){
		this.name = name;
		t = new Thread(this,name);
		t.start();
	}
	
	@Override
	public void run() {
		
		int s = 0;
		while(true){
			
			int v = (int)(Math.random()*10);
			s = s + v;
			System.out.println(name+ ": " + s);
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			if(s >= 50){
				System.out.println(name + ": " + "我贏了！！！");
				System.exit(0);
			}			
		}
	}		 
	
	public static void main(String[] args) {
		
		new ThreadDemo("1號");		
		new ThreadDemo("2號");	
		new ThreadDemo("3號");			
		
	}	
}