How to use Intent in android?

Activity1: IntentEgActivity
IntentEgActivity.java

package intent.eg;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.*;

public class IntentEgActivity extends Activity {

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button buttonOne = (Button) findViewById(R.id.button1);
        buttonOne.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
              EditText usernam = (EditText)findViewById(R.id.editText1);
              String name = usernam.getText().toString();
              EditText upas = (EditText)findViewById(R.id.editText2);
              String pass = upas.getText().toString();
              if(name.equals("xyz") && pass.equals("abc"))
              {
                     Intent i = new Intent(IntentEgActivity.this,InvokedActivity.class);
                     i.putExtra("value1", name);
                     i.putExtra("value2", pass);
                     startActivity(i);
              }
              else
              {      Toast.makeText(getApplicationContext(), "wrong user name or password", Toast.LENGTH_SHORT).show();

               }

           }
        });
    }
}

Main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello" />
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Enter User Name" />
   <EditText
          android:id="@+id/editText1"
          android:layout_width="232dp"
          android:layout_height="wrap_content" >
     <requestFocus />
  </EditText>
  <TextView
        android:id="@+id/textView2"
        android:layout_width="152dp"
        android:layout_height="wrap_content"
        android:text="Enter Password" />
  <EditText
        android:id="@+id/editText2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="textPassword" />
 <Button
              android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Go to Next Activity" />
</LinearLayout>

Activity2: InvokedActivity

InvokedActivity.java

package intent.eg;

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

public class InvokedActivity extends Activity

{      @Override
        public void onCreate(Bundle savedInstanceState) {
               super.onCreate(savedInstanceState);
               setContentView(R.layout.disp);
               Bundle Name = getIntent().getExtras();
               String userName = Name.getString("value1");
               if(userName != null)
               {
                     TextView txt = (TextView)findViewById(R.id.textView5);
                     txt.setText("Welcome"+" "+userName);
               }
          }
}

disp.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    <TextView
        android:id="@+id/textView5"
        android:layout_width="167dp"
        android:layout_height="wrap_content"
        android:text="TextView" />
</LinearLayout>