How to test some internet-funcs on PC, not on Mobile phone?

import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import javax.microedition.io.*;
import java.io.*;
/////////////

try{
HttpConnection connection = (HttpConnection) Connector.open("http://somenonexistentsite");
        connection.setRequestMethod(HttpConnection.GET);
        connection.setRequestProperty("Content-Type","//text plain");
        connection.setRequestProperty("Connection", "close");
textBox.setString("ok"); // <=== when started On PC
}
catch(IOException e)
{
textBox.setString("unable to open url");//<<== ...on Mobile Phone
}