How can i maintain the two thread in andriod, please send me the sample

package com.yourname.main;

import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }
}

package com.yourname.main;

import android.app.Activity;
import android.content.Intent;
import android.graphics.drawable.AnimationDrawable;
import android.os.Bundle;
import android.view.Menu;
import android.view.MotionEvent;
import android.widget.ImageView;

public class SplashScreen extends Activity {
	
    /**
     * The thread to process splash screen events
     */
    private Thread mSplashThread;	

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
	    super.onCreate(savedInstanceState);

	    // Splash screen view
    	setContentView(R.layout.splash);
    	
        // Start animating the image
	    final ImageView splashImageView = (ImageView) findViewById(R.id.SplashImageView);
	    splashImageView.setBackgroundResource(R.drawable.flag);
	    final AnimationDrawable frameAnimation = (AnimationDrawable)splashImageView.getBackground();
	    splashImageView.post(new Runnable(){
			@Override
			public void run() {
				frameAnimation.start();				
			}	    	
	    });
	        	
    	
    	final SplashScreen sPlashScreen = this;   
    	
    	// The thread to wait for splash screen events
    	mSplashThread =  new Thread(){
    		@Override
    		public void run(){
    			try {
    				synchronized(this){
    					// Wait given period of time or exit on touch
    					wait(5000);
    				}
    			} 
    			catch(InterruptedException ex){    				
    			}

    			finish();
    			
    			// Run next activity
    			Intent intent = new Intent();
    			intent.setClass(sPlashScreen, MainActivity.class);
    			startActivity(intent);
    			stop();     				
    		}
    	};
    	
    	mSplashThread.start();
    	
	}
	
	@Override
	public boolean onCreateOptionsMenu(Menu menu){
		super.onCreateOptionsMenu(menu);
		return false;
	} 
	  
    /**
     * Processes splash screen touch events
     */
    @Override
    public boolean onTouchEvent(MotionEvent evt)
    {
    	if(evt.getAction() == MotionEvent.ACTION_DOWN)
    	{
    		synchronized(mSplashThread){
    			mSplashThread.notifyAll();
    		}
    	}
    	return true;
    }
	

}