Activity01.java

package com.yarin.android.Examples_03_01;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;


public class Activity01 extends Activity {
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button button = (Button) findViewById(R.id.button1);
        button.setOnClickListener(new Button.OnClickListener() {
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setClass(Activity01.this, Activity02.class);
                startActivity(intent);
                Activity01.this.finish();
            }
        });
    }
}