รบกวนสอบถาม เรื่อง code ในการเปิดบราวเซอร์ (Web Browser) ของ android ครับ

String url = "http://www.example.com";
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);

import android.content.Intent;

private void openBrowser()
    {
String url = "http://www.example.com";
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);
    }
}

package com.myapp;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ViewSwitcher;


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

        // viewSwitcher1
        Vs = (ViewSwitcher) findViewById(R.id.viewSwitcher1);
		
        // button1 (Go)
        Button btn1 = (Button) findViewById(R.id.button1);
        btn1.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
            	Vs.showNext();
                // editText1
            	EditText txtUrl = (EditText) findViewById(R.id.editText1);

			String url = txtUrl.getText().toString();
			Intent intent = new Intent(Intent.ACTION_VIEW);
			intent.setData(Uri.parse(url));
			startActivity(intent);
            }
        });
		
	}

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
    
}