SOAP Calculator Client (Java)

A simple Java SOAP client that calls the public Calculator SOAP service from DNE Online.

This project:

• Downloads the WSDL during the Maven build
• Generates SOAP client stubs via wsimport
• Runs a small demo client to call Add/Subtract/Multiply/Divide

Requirements

• Java 21+
• Maven 3.9+
• Internet access (for the WSDL download + SOAP calls)

Project Structure

• src/main/java/com/roy/calc/client/CalculatorClient.java - runnable demo client
• Generated SOAP stubs are created at build time under target/generated-sources/wsimport
• The downloaded WSDL is placed in target/wsdl/calculator.wsdl and copied onto the runtime classpath

Build

mvn clean package

Run

Run the main class with Maven exec:

mvn -DskipTests org.codehaus.mojo:exec-maven-plugin:3.5.0:java -Dexec.mainClass=com.roy.calc.client.CalculatorClient

Expected output (example):

Add: 30
Subtract: 10
Multiply: 200
Divide: 2

Notes

• The WSDL URL used is: http://www.dneonline.com/calculator.asmx?WSDL
• If your network blocks HTTPS/TLS to the service, the build uses HTTP for WSDL download.
• If the SOAP endpoint is blocked, the build may succeed but the run step can fail.