Multi-Thread 1: how to use synchronized

public class TraditionalThreadSynchronize {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new TraditionalThreadSynchronize().initial();
	}
	
	private void initial(){
		final Outputter outputter = new Outputter();
		new Thread(new Runnable(){  //this is the first theread
			public void run(){
				while(true){
					try {
						Thread.sleep(100);
					} catch (InterruptedException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
					outputter.output("aaaaaaaaaaa"); //the thread want to use outputer print a string.
				}
					
			}
			
		}).start();
		
		new Thread(new Runnable(){//thread two
			public void run(){
				while(true){
					try {
						Thread.sleep(100);
					} catch (InterruptedException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
					outputter.output("bbbbbbbbbbbbb");  //thread two also want to use the function to print
				}
					
			}
			
		}).start();
	}
	
	class Outputter{
		public void output(String name){
			int len = name.length();
			for(int i= 0;i<len;i++){
				System.out.print(name.charAt(i));
			}
			System.out.println();
		}
	}

}

new Thread(new Runnable(){
			@Override
			public void run() {
				while(true){
					try {
						Thread.sleep(10);
					} catch (InterruptedException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
					new outputer.output("bbbbbbbb");
				}
				
			}
		}).start();

public synchronized void output(String name){
			int len = name.length();
			for(int i=0;i<len;i++){
				System.out.print(name.charAt(i));
			}
			System.out.println();
		}	

// Synchronized add to the function is the same as synchronized(this). the Instance is sychronized for this function

public void output(String name){
	int len = name.length();
	synchronized (this) 
	{
	for(int i=0;i<len;i++){
		System.out.print(name.charAt(i));
	}
	System.out.println();
	}
}
		
public synchronized void output2(String name){
	int len = name.length();
	for(int i=0;i<len;i++){
			System.out.print(name.charAt(i));
	}
	System.out.println();
}

public void output(String name){
	int len = name.length();

	synchronized (Outputer.class) 
	{
		for(int i=0;i<len;i++){
			System.out.print(name.charAt(i));
		}

		System.out.println();
	}
}		

public synchronized void output2(String name){
	int len = name.length();
	for(int i=0;i<len;i++){
		System.out.print(name.charAt(i));
	}
	System.out.println();
}