Corba Labs

These labs use JDK 1.8 (Java 8), since CORBA classes are no longer available in later versions of Java.

Table of content

• How to run the labs on your machine
  • 1. Install JDK 1.8
  • 2. Unzip the installed zip file
  • 3. Add the JDK to your project
  • 4. Add the JDK to the environment variables
• Steps followed in the labs: CORBA lifecycle
  • 1. Define the IDL interface
  • 2. Compile the IDL file
  • 3. Implement the abstract object
  • 4. Write and compile the server
  • 5. Write and compile the client
• Perspectives

How to run the labs on your machine

1. Install JDK 1.8

Check out this website: OpenJDK Downloads
Choose the configurations depending on your own machine's characteristics.

2. Unzip the installed zip file

3. Add the JDK to your project

If you have Eclipse:

3.1. Add the JDK to the installed JREs:
Window > Preferences > Java > Installed JREs > Add > Standard VM > Next > Directory > Find and select your JDK folder > Finish > Check the newly added JDK to make it the default JDK for compilation (temporarily, you can always come back and undo that) > Apply and close.

3.2. Add the JDK to your project's libray:
Left click the project > Build path > Configure build path > Libraries > Add library > JRE System library > Next > Execution environment > JavaSE 1.8 > Finish > Apply and close.

4. Add the JDK to the environment variables

4.1. Go to the location of the JDK folder, enter the bin folder, and copy the path in there.
4.2. Go to the environment variables > Path > Edit > Add > Paste the copied path there > Apply Ok for all tabs.
4.3. To test if it all works fine, go to the command prompt and check the version of idlj:

idlj -version

It should return the version of idlj.

Steps followed in the labs: CORBA lifecycle

1. Define the IDL interface

hello.idl:

interface Hello {
  void sayHello();
}

2. Compile the IDL file

By compiling this file, it gnerates all the necessary classes for the CORBA app:

idlj -fall hello.idl

3. Implement the abstract object

HelloImpl.java:

public class HelloImpl extends HelloPOA {
  void sayHello() {
    // Implementation
  }
}

4. Write and compile the server

5. Write and compile the client

Perspectives

• Test writing the client in another language (ex. C++) to communicate with the Java-written server.