Click File-> Settings-> Plugins and use the search field to find and install the Codename One plugin.
NOTE: The plugins.netbeans.org server has been down frequently in the past couple of months preventing automatic installation. Please follow the instructions here as a workaround if the instructions above don’t work. yum install java-17
Codename One initializr tool allows you to create a native, cross-platform iPhone/Android app with Java or Kotlin Objective To provide a definitive guide for installing
Once the plugin is installed & you registered check this post covering tutorials/videos & guides Both commands work identically for the syntax yum
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sudo yum install java-17-openjdk-devel For server environments (no X11, sound, or graphics):
javac -version | Problem | Likely Cause | Solution | |---------|--------------|----------| | No package java-17-openjdk available | Repository not enabled or OS too old | Enable AppStream: yum repolist ; upgrade OS to RHEL 8+ | | Error: Unable to find a match | Using CentOS 7 or RHEL 7 | Java 17 not native. Install via Amazon Corretto or OpenJDK from Adoptium | | Conflicts with existing Java 8 | Alternatives not set | Use alternatives --config java | | java: command not found | PATH not updated | Logout/login or source /etc/profile | 8. Clean Uninstallation To remove Java 17 completely:
Version: 1.0 Target OS: RHEL 8/9, CentOS 8/9, Fedora, AlmaLinux, Rocky Linux Package Manager: yum (or dnf ) 1. Objective To provide a definitive guide for installing OpenJDK 17 using the yum package manager, including repository configuration, installation, version management, and basic verification. 2. Important Preliminary Note On modern RHEL-based distributions (RHEL 8+, CentOS 8+, Fedora 22+), the yum command is symlinked to dnf . Both commands work identically for the syntax yum install <package> . This paper uses yum for legacy compatibility. 3. Standard Installation (Default Repositories) OpenJDK 17 is available in the AppStream repository of RHEL 8+ and its derivatives. 3.1 Search for available Java 17 packages yum search openjdk-17 or more specifically:
sudo yum remove java-17-openjdk* For older OSes (e.g., CentOS 7), use a third-party repo: Amazon Corretto sudo yum install -y java-17-amazon-corretto-devel Adoptium (Eclipse Temurin) # Add repo first sudo yum install -y https://packages.adoptium.net/artifactory/rpm/rpm_repo.repo sudo yum install temurin-17-jdk 10. Conclusion The command sudo yum install java-17-openjdk-devel is the standard, reliable method for installing Java 17 on modern RHEL-based Linux distributions. Always verify installation with java -version and manage multiple versions using the alternatives system. For legacy OS versions, use Amazon Corretto or Adoptium as an alternative source. Document ID: YUM-JAVA17-001 Last Reviewed: 2025-03-15
java -version Expected output (example):
# List available versions yum --showduplicates list java-17-openjdk sudo yum install java-17-openjdk-17.0.9.0.9-2.el8 5. Managing Multiple Java Versions If multiple JDKs are installed (e.g., Java 11 and Java 17): 5.1 List installed Java versions yum list installed | grep openjdk 5.2 Switch default Java version using alternatives sudo alternatives --config java Example output:
sudo yum install java-17-openjdk For compiling and running Java code:
