Frustating errors while creating java web-service

Question

Hey All
Me getting a frustating problem while making the webservice using Eclipse, jdk1.6.0_03,and Tomcat-5.0.
The overall scenario is like this.There is a class “WsEpp” of which I have to make webservice.”WsEpp” class is using the object of another class “EppService”, and if certain conditions will be fullfill then “EppService” class will use the object of another class “PrintClass”,which is allready using the object of class “PrintLib”.
“PrintLib” class is a long file and its using many classes which are in supported jar files.
Here is the some part of “PrintLib” where I am facing the problem,
Scenario-1
public epp_Command command_data = new epp_Command();
public PrintLib()
System.out.println("CONSTRUCTOR 1");
this.command_data = new epp_Command();
System.out.println("CONSTRUCTOR 2");
Here I am using the constructor of the “PrintLib” and “epp_Command” is included into jar files.When “WsEpp” is running as web service then
<faultcode>soapenv:Server.userException</faultcode>
<faultstring>java.lang.reflect.InvocationTargetException</faultstring>
occurs as the response of webservice.
Scenario-2
//public epp_Command command_data = new epp_Command();
public PrintLib()
System.out.println("CONSTRUCTOR 1");
// this.command_data = new epp_Command();
System.out.println("CONSTRUCTOR 2");
When I am commenting the lines as shown in scenarion-2,then the service is running well and printing CONSTRUCTOR 1 and CONSTRUCTOR 2 as given in println command.
And response of webservice gives the desired result.
Scenario-3
public epp_Command command_data = null;
public PrintLib()
System.out.println("CONSTRUCTOR 1");
this.command_data = new epp_Command();
System.out.println("CONSTRUCTOR 2");
By using scenarion-3 the service is running and printing only CONSTRUCTOR 1 as given in println command.And also
<faultcode>soapenv:Server.userException</faultcode>
<faultstring>java.lang.reflect.InvocationTargetException</faultstring>
occurs as the response of webservice.
I am suffering with this problem from last 2 weeks.Kindally help me and provide me the some suggestions and tips.In case of any more requirement I can provid ethe whole codes.

Answer 1

Hi,
Can anybody tell me please, is it possible to create
a Web Service from java class where the input from
user is required ?Yes, the parameters of your method will be mapped in WSDL.
But i've some considerations about your code.
I suggest you change the name of isPrime do Prime, its a good code convention to put the name of class starting with Upper case. and isn't good the name of class equals to name of method.
I suggest you to change the "static boolean isPrime (int n)" to "public boolean isPrime(int n)" to publish a method as a WebService method it's must be public and not static. After this change try to generate your Web Service.
Regards.