Android application cannot connect to mssql server2008

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Mobile

Android

SQL-Server-2008R2

this is my layout.xml

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android">
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity" >

    <textview>
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/t1" />
    
       <textview>
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/t2"
        />
    
        <textview>
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/t3"
        />
    
        <textview>
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/t4"
        />
    
        <textview>
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/t5"
        />
    
        <Button 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/btn2"
        />

      </textview></textview></textview></textview></textview></linearlayout>

this is my activitymain.java

    package com.example.mssqlconnect;

    import android.os.Bundle;   
    import java.sql.*;
    import net.sourceforge.jtds.jdbc.*;
    import android.app.Activity;
    import android.util.Log;
    import android.view.Menu;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.TextView;
    import java.sql.*;
    import net.sourceforge.jtds.jdbc.*;
    public class MainActivity extends Activity {

	public class A implements OnClickListener {

		@Override
		public void onClick(View arg0) {
			TextView tv2=(TextView)findViewById(R.id.t2);
			TextView tv3=(TextView)findViewById(R.id.t3);
			TextView tv4=(TextView)findViewById(R.id.t4);
			TextView tv5=(TextView)findViewById(R.id.t5);
			
			tv2.setText("Connected");
			Log.i("Android"," MySQL Connect Example.");
			Connection conn = null;
			try {
			String driver = "net.sourceforge.jtds.jdbc.Driver";
			Class.forName(driver).newInstance();
			tv4.setText("2111");
			//test = com.microsoft.sqlserver.jdbc.SQLServerDriver.class;
			String connString = "jdbc:jtds:sqlserver://sony-VAIO/sony :1433/androiddata;encrypt=false;user=0cool;password=chevron;instance=SQLEXPRESS;";
			//String connString ="jdbc:jtds:sqlserver://(local);instance=MSSQLSERVER";
			String username = "0cool";
			String password = "chevron";
			tv4.setText("222222222");
			try{
			conn = DriverManager.getConnection(connString,username,password);
			//tv5.setText("2423424");
			
			
			
			Log.w("Connection","open");
			Statement stmt = conn.createStatement();
			ResultSet reset = stmt.executeQuery("select * from android_data");
			
			   //Print the data to the console
			   while(reset.next()){
			    Log.w("Data:",reset.getString(1));
    //			              Log.w("Data",reset.getString(2));
			    //tv.setText(reset.getString(2));
			    }
			    conn.close();
			    }
			    catch(SQLException e)
			     {
			   	    tv5.setText(e.getMessage());
			     }
			
			} catch (Exception e)
			{
			            //Log.w("Error connection","" + e.getMessage());
				        TextView tv1=(TextView)findViewById(R.id.t1);
				        tv1.setText(e.getMessage());
			}
			}
		

	}

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		Button btn=(Button)findViewById(R.id.btn2);
		btn.setOnClickListener(new A());
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}

I am not getting any exception or any error in this code on running this in emulator help me pls m on a schedule. If there is an alternative for manipukating data in the database table then please guide me i have tried to access through json too but then again I was not getting any data back.