IDEasy can not handle a faulty definition of JAVA_HOME

[jan-vcapgemini]

Expected behavior

As an IDEasy user I expect IDEasy to help me fix issues with my Java configuration.

Actual behavior

If I deliberately use a faulty Java configuration e.g. set my JAVA_HOME to a non existent directory, IDEasy will just report an error like this:

$ ide mvn
The JAVA_HOME environment variable is not defined correctly,
this environment variable is needed to run this program.
Running command 'D:\Projects\ideasy-dev\software\mvn\bin\mvn.cmd'
failed with exit code 1!
Step 'ide (mvn)' failed: com.devonfw.tools.ide.cli.CliProcessException: Running command 'D:\Projects\ideasy-dev\software\mvn\bin\mvn.cmd'
failed with exit code 1!
1 step(s) failed out of 3 steps.
Running command 'D:\Projects\ideasy-dev\software\mvn\bin\mvn.cmd'
failed with exit code 1!

Error: IDEasy failed with exit code 1

Instead if would be better if IDEasy can repair itself or point the user in the right direction to fix this problem.

Steps to reproduce (bug) / Use Case of feature request (enhancement)

1. Open a mvn project within an IDEasy project e.g. switch the directory to projects/IDEasy/workspaces/main/IDEasy
2. Type: export JAVA_HOME="C:/Test"
3. Try to run ide mvn

Related/Dependent Issues

Comments/Hints:

It would for example be helpful, if IDEasy would print out where the JAVA_HOME variable is pointing to.

Affected version:

• OS: Windows
• IDEasy: 2024.12.001-beta

[hohwille]

First of all I think that it is not IDEasy but maven that cannot handle a faulty definition of JAVA_HOME.
What we could do in IDEasy is to expose our environment variables from ToolCommandlet.setEnvironment also to the shell.
That means the following:

• We will improve EnvironmentCommandlet
• It will iterate all LocalToolCommandlets for installed tools (see UpdateCommandlet.updateSoftware() to get the idea)
• For each ToolCommandlet we will call setEnvironment and pass the same instance of EnvironmentContext that collects the environment variables to a Map<String, String> (or Properties).
• At the end of the loop, we add all these collected variables that are not already defined to the output.