Getting error while calling library jar file in j2me - java-me

Question

I have created a login page with webservice in j2me. But while running I am getting error. Can anyone please help? My code is:
public class Login extends MIDlet implements CommandListener {
//the main form
Form mainForm = null;
//the text-boxes for the input
TextField txtBoxA = null;
TextField txtBoxB = null;
//the result label
//the Exit command
Command cmdExit = null;
Command cmdAdd = null;
//the Display reference
Display display = null;
public Login() {
{
//construct the main form
mainForm = new Form("kSOAP Example");
//construct the controls
txtBoxA = new TextField("UserName:", null, 50, TextField.ANY);
txtBoxB = new TextField("Password:", null, 50, TextField.ANY);
// result = new StringItem("Result:", null);
//add controls to the form
mainForm.append(txtBoxA);
mainForm.append(txtBoxB);
// mainForm.append(result);
//construct commands
cmdExit = new Command("Exit", Command.EXIT, 1);
cmdAdd = new Command("Add", Command.SCREEN, 1);
//add commands
mainForm.addCommand(cmdAdd);
mainForm.addCommand(cmdExit);
}
}
public void startApp() {
if (display == null) {
display = Display.getDisplay(this);
}
//display the main form
display.setCurrent(mainForm);
//register the command listener
mainForm.setCommandListener(this);
}
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
}
public void commandAction(Command c, Displayable d) {
if (c == cmdExit) {
this.destroyApp(false);
this.notifyDestroyed();
} else if (c == cmdAdd) {
//callWebServiceMethod();
Library lib=new Library();
lib.init();
}
}
my jar file coding is library.jar
public class Library {
String METHOD_NAME = "ValidateLogin_M";
String SOAP_ACTION ="http://64.244.69.235:81/MobileApp/ValidateLogin_M";
String NAMESPACE ="http://64.244.69.235:81/MobileApp/";
String URL ="http://64.244.69.235:81/MobileApp/service1.asmx";
public Library() {
// TODO Auto-generated constructor stub
}
/**
* #param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Library lib=new Library();
lib.init();
}
public void init()
{
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
String user= "gsrtestnew#gmail.com";
String password= "123456";
request.addProperty("UserID",user);
request.addProperty("Password",password);
SoapSerializationEnvelope envelope =
new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.dotNet = true;
envelope.setOutputSoapObject(request);
HttpTransport j2meHttpTransport = new HttpTransport(URL);
try {
j2meHttpTransport.call(SOAP_ACTION, envelope);
SoapObject content = (SoapObject) envelope.bodyIn;
String sum = content.getProperty(0).toString();
// result.setText(sum);
System.out.println("##########"+sum);
JSONArray jsonobj = new JSONArray(sum.toString());
System.out.println("Json obj length:: " + jsonobj.length());
if(jsonobj.length() == 0)
{
}
for(int i=0; i<jsonobj.length(); i++)
{
JSONObject jobj = jsonobj.getJSONObject(i);
String CustID = jobj.getString("CustID");
System.out.println("CustID is :: "+CustID);
String Email = jobj.getString("Email");
System.out.println("Email is :: "+Email);
String FirstName = jobj.getString("FirstName");
System.out.println("FirstName is :: "+FirstName);
String LastName = jobj.getString("LastName");
System.out.println("LastName is :: "+LastName);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
I have imported the jar file and called as Library class. But still I am getting error.
My error is
Starting emulator in execution mode
Installing suite from: http://127.0.0.1:49412/WebApplication.jad
TRACE: <at java.lang.Error: ClassFormatError: 56>, Exception caught in Display class
java.lang.Error: ClassFormatError: 56
at com.web.application.Login.commandAction(Login.java:95)
at javax.microedition.lcdui.Display$ChameleonTunnel.callScreenListener(), bci=46
at com.sun.midp.chameleon.layers.SoftButtonLayer.processCommand(), bci=74
at com.sun.midp.chameleon.layers.SoftButtonLayer.commandSelected(), bci=11
at com.sun.midp.chameleon.layers.MenuLayer.pointerInput(), bci=170
at com.sun.midp.chameleon.CWindow.pointerInput(), bci=76
at javax.microedition.lcdui.Display$DisplayEventConsumerImpl.handlePointerEvent(), bci=19
at com.sun.midp.lcdui.DisplayEventListener.process(), bci=296
at com.sun.midp.events.EventQueue.run(), bci=179
at java.lang.Thread.run(Thread.java:722)

Answer 1

This has already been answered - jvm cannot load a class due to difference in version - cf - ClassFormatError: 56 while using hessian in j2me
Recompile with
javac -target 1.4 ...