public class ThreadSynchronizDemo1{
	public synchronized void 寫文件(String 內容){
		System.out.println("進入寫文件函數的線程:"+ Thread.currentThread().getName());
		System.out.println("當前對象:"+ this);
			try{
				Thread.sleep(1000*5);
				System.out.println("線程:"+ Thread.currentThread().getName() + " 休息了5秒");
			}catch(Exception e){}
			for(int i=0; i< 內容.length(); i++)
					System.out.print(內容.charAt(i));
		System.out.println("\n退出寫文件函數的線程:"+ Thread.currentThread().getName() + "\n");
	}

	public void 創建兩個線程(){
		Runnable r = new Runnable(){
			public void run(){
				寫文件("學JAVA其實是件很容易的事，只要你用心學，花時間");
			}
		};

		Thread 線程A = new Thread(r,"線程A");
		Thread 線程B = new Thread(r,"線程B");
		線程A.start();
		線程B.start();
	}

	public static void main(String arg[]){
		ThreadSynchronizDemo1 demo = new ThreadSynchronizDemo1();
		demo.創建兩個線程();
	}
}