[Bug 1925638] New: Ant fails to use the java jvm configured by the alternatives command

https://bugzilla.redhat.com/show_bug.cgi?id=1925638

Bug ID: 1925638
           Summary: Ant fails to use the java jvm configured by the
                    alternatives command
           Product: Fedora
           Version: 33
          Hardware: All
                OS: Linux
            Status: NEW
         Component: ant
          Severity: medium
          Assignee: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail], [e-mail],
                    [e-mail],
                    [e-mail],
                    [e-mail], [e-mail]
  Target Milestone: ---
    Classification: Fedora

Description of problem:

Ant does not use the version of java configured by the alternatives command. It
uses bash functions that are part of javapackages-tools to determine which java
command to run instead of just using the java I told it to use with the
alternatives commands. Furthermore, there should only be one method of
determining which java to run. The alternatives system and the functions in
javapackages-tools are redundant. One of them needs to be removed.

Version-Release number of selected component (if applicable):

ant-1.10.9-1.fc33

How reproducible:

Configure java 1.8 with the alternatives command and then run an ant build.

Steps to Reproduce:
1. sudo dnf -y install java-11-openjdk-devel java-1.8.0-openjdk-devel
javapackages-tools
2. sudo alternatives --set java java-1.8.0-openjdk.x86_64
3. echo '<project> <echo message="java.home=${java.home}"/> </project>' | cat >
build.xml
4. ant

Actual results: (ant using java 11 after 1.8 was configured)

Buildfile: /home/bill/build.xml
     [echo] java.home=/usr/lib/jvm/java-11-openjdk-11.0.9.11-9.fc33.x86_64

BUILD SUCCESSFUL
Total time: 0 seconds

Expected results: (ant should be using 1.8)

Buildfile: /home/bill/build.xml
     [echo] java.home=/usr/lib/jvm/java-1.8-openjdk...

BUILD SUCCESSFUL
Total time: 0 seconds

Additional info:

[Bug 1925638] Ant fails to use the java jvm configured by the alternatives command

https://bugzilla.redhat.com/show_bug.cgi?id=1925638

Fedora Admin user for bugzilla script actions  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|[e-mail] |[e-mail]
                   |project.org                 |

--- Comment #1 from Fedora Admin user for bugzilla script actions  ---
This package has changed maintainer in Fedora. Reassigning to the new
maintainer of this component.

[Bug 1925638] Ant fails to use the java jvm configured by the alternatives command

https://bugzilla.redhat.com/show_bug.cgi?id=1925638

Mikolaj Izdebski  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |CLOSED
         Resolution|---                         |NOTABUG
           Doc Type|---                         |If docs needed, set a value
        Last Closed|                            |2021-04-28 10:33:19

--- Comment #2 from Mikolaj Izdebski  ---
It is expected that Ant does not rely on alternatives for choosing JVM to use.
This is described in more detail at
https://fedoraproject.org/wiki/Changes/Decouple_system_java_setting_from_jav...
JVM used by Ant can be changed in configuration files.