Pornpun

package com.mystou;

public class Canon implements PrinterInterface {

    @Override
    public void on(Object object) {
        // code...
        System.out.println("เปิดเครื่อง " + object.getClass().getName());
    }

Pornpun

package com.mystou.intenttest;

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


public class DetailActivity extends Activity {

Pornpun

package com.mystou.testapp;

import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.widget.TextView;


public class MainActivity extends ActionBarActivity {