Create a simple Web Service - A Java Code Example

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This code example shows how to create a simple web service. We use the annotation @WebService to declare the class as a such.
The annotation @WebMethod is provided at method level to declare it as an operation for the web service.
The operation getTime of the JavadbWebService simply returns the current time.

package com.javadb.ws.example;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import javax.jws.WebMethod;
import javax.jws.WebService;

/**
*
* @author www.javadb.com
*/

@WebService()
public class JavadbWebService {

    @WebMethod
    public String getTime() {

        Calendar calendar = Calendar.getInstance();
        SimpleDateFormat sdf = new SimpleDateFormat("HH:mm");
        return (sdf.format(calendar.getTime()));

    }

}

The result of a call to the operation getTime produces something like this:

14:15

This is the SOAP request and response to the web service:

<?xml version="1.0" encoding="UTF-8"?>
<S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
    <S:Header/>
    <S:Body>
        <ns2:getTime xmlns:ns2="http://example.ws.javadb.com/"/>
    </S:Body>
</S:Envelope>

<?xml version="1.0" encoding="UTF-8"?>
<S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
    <S:Body>
        <ns2:getTimeResponse xmlns:ns2="http://example.ws.javadb.com/">
            <return>14:15</return>
        </ns2:getTimeResponse>
    </S:Body>
</S:Envelope>

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