src/coffee/source/helloworld/HelloWorld.java


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package coffee.source.helloworld;

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

public class HelloWorld extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextView text = (TextView)findViewById(R.id.my_text);
        text.setText("Hello, world!");
    }
}