AlertBox Demo activity

package com.demo;

public class AlertBoxDemo extends Activity
{
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        AlertDialog.Builder build= new AlertDialog.Builder(this);
        build.setTitle("Select...");
        build.setMessage("Do you Wanna Quit ??");
        build.setIcon(R.drawable.icon);
       
        build.setPositiveButton("YES",new OnClickListener()
        {
          
            public void onClick(DialogInterface dialog, int which)
            {
                Toast.makeText(getApplicationContext(),"You have clicked quit",1000).show();
            }
        });
        build.setNegativeButton("NO",new OnClickListener()
        {
          
            public void onClick(DialogInterface dialog, int which)
            {
                Toast.makeText(getApplicationContext(),"You have not clicked quit", 1000).show();
            }
        });
        build.setNeutralButton("CANCEL",new OnClickListener()
        {

            public void onClick(DialogInterface dialog, int which)
            {
                Toast.makeText(getApplicationContext(),"You have canceled", 1000).show();
            }
        });
        build.show();
    }
}