If you do not already havethe JDK software installed or if JAVA_HOME is not set, the Java CAPS installation will notbe successful. The following tasks provide the information you needto install JDK software and set JAVA_HOME on UNIXor Windows systems.
jdk 1.5 0 06 14
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Debug: Exec[update-java-alternatives](provider=posix): Executing check 'test /etc/alternatives/java ef '/usr/lib/jvm/java-1.8.0-openjdk/bin/java''Debug: Executing: 'test /etc/alternatives/java ef '/usr/lib/jvm/java-1.8.0-openjdk/bin/java''Debug: Exec[update-java-alternatives](provider=posix): Executing 'update-java-alternatives -set java-1.8.0-openjdk --jre'Debug: Executing: 'update-java-alternatives -set java-1.8.0-openjdk --jre'Notice: /Stage[main]/Java::Config/Exec[update-java-alternatives]/returns: update-java-alternatives: directory does not exist: /usr/lib/jvm/java-1.8.0-openjdk-Error: update-java-alternatives -set java-1.8.0-openjdk --jre returned 1 instead of one of [0]Error: /Stage[main]/Java::Config/Exec[update-java-alternatives]/returns: change from notrun to 0 failed: update-java-alternatives -set java-1.8.0-openjdk --jre returned 1 instead of one of [0]Debug: Class[Java::Config]: Resource is being skipped, unscheduling all eventsNotice: /Stage[main]/Java/Anchor[java::end]: Dependency Exec[update-java-alternatives] has failures: trueWarning: /Stage[main]/Java/Anchor[java::end]: Skipping because of failed dependenciesDebug: /Stage[main]/Java/Anchor[java::end]: Resource is being skipped, unscheduling all eventsDebug: Class[Java]: Resource is being skipped, unscheduling all events
drwxr-xr-x 4 root root 4,0K oct. 28 2019 java-1.5.0-gcj-6-amd64lrwxrwxrwx 1 root root 20 oct. 19 2019 java-1.8.0-openjdk-amd64 -> java-8-openjdk-amd64rw-rr- 1 root root 2,7K avril 24 15:11 .java-1.8.0-openjdk-amd64.jinfodrwxr-xr-x 7 root root 4,0K juil. 7 10:57 java-8-openjdk-amd64
Had the same issue when I installed Java 9. My project would default to J2SE-1.5 Execution Environment. Strangely, Java 9 compliance level is not referenced like previous versions, i.e. "1.8", but as "9". So I had to provide my properties and Maven compiler plugin config accordingly:
The root-cause of this issue is that if for any reason Eclipse's cannot resolve a valid value for the maven.compiler.source property when generating/updating the .classpath file from the pom, it will simply default to using org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5.
In my case (old JBoss Developer Studio), the issue was the JRE environments did not include 1.8 (only 1.7). When I switched the maven-compiler-plugin version to 1.7 and did maven update project, it updated the Eclipse JRE system library to 1.7.
I had set everything as you said, but I was always directly selecting in my Java Build Path "java-11-openjdk.x86_64" as one of my Alternante JRE. I fixed my problem by selecting in "Execution environment" JavaSE-10 (but you have to double click on it and then choose as a compatible JRE your OpenJDK11 version) as shown on the picture.Execution environment setup
Amazon Linux 2022 includes many of the same packages that were present in Amazon Linux 2. Some of these package versions were updated for Amazon Linux 2022. The following table lists the old and new versions of these packages.
See All Java Tutorials CodeJava.net shares Java tutorials, code examples and sample projects for programmers at all levels. CodeJava.net is created and managed by Nam Ha Minh - a passionate programmer.
JGraphT is dual-licensed under LGPL 2.1 and EPL 2.0. As a recipient of JGraphT, you may choose which license to receive the code under. Licensing information for libraries on which the project depends is available in the README.
The commons mailing lists act as the main support forum.The user list is suitable for most library usage queries.The dev list is intended for the development discussion.Please remember that the lists are shared between all commons components,so prefix your email by [io].
Apache, ActiveMQ, Apache ActiveMQ, the Apache feather logo, and the Apache ActiveMQ project logo are trademarks of The Apache Software Foundation. Copyright 2023, The Apache Software Foundation. Licensed under Apache License 2.0.
RabbitMQ release notes are available on GitHub.See RabbitMQ support timeline to find out what release seriesare supported.For guidance on upgrades, see the Upgrade and Blue/Green Deployment Upgrade guides.
Installing Eclipse is relatively easy, but does involve a few steps and software from at least two different sources. Eclipse is a Java-based application and, as such, requires a Java Runtime Environment or Java Development Kit (JRE or JDK) in order to run.
Regardless of your operating system, you will need to install some Java virtual machine (JVM). You may either install a Java Runtime Environment (JRE), or a Java Development Kit (JDK), depending on what you want to do with Eclipse. If you intend to use Eclipse for Java development, then you should install a JDK. If you aren't planning to use Eclipse for Java development and want to save some disk space, install a JRE.
A Java 11 or newer JRE/JDK is required, LTS release are preferred to run all Eclipse 2022-12 packages based on Eclipse 4.26, with certain packages choosing to provide one by default. The Installer now also includes a JRE--consider using the Installer. Please see 5 Steps to Install Eclipse.
A Java 11 or newer JRE/JDK is required, LTS release are preferred to run all Eclipse 2022-09 packages based on Eclipse 4.25, with certain packages choosing to provide one by default. The Installer now also includes a JRE--consider using the Installer. Please see 5 Steps to Install Eclipse.
A Java 11 or newer JRE/JDK is required, LTS release are preferred to run all Eclipse 2022-06 packages based on Eclipse 4.24, with certain packages choosing to provide one by default. The Installer now also includes a JRE--consider using the Installer. Please see 5 Steps to Install Eclipse.
A Java 11 or newer JRE/JDK is required, LTS release are preferred to run all Eclipse 2022-03 packages based on Eclipse 4.23, with certain packages choosing to provide one by default. The Installer now also includes a JRE--consider using the Installer. Please see 5 Steps to Install Eclipse.
There are several package choices. Note that you can install the features from any package into any other package. If you are, for example, planning to do mostly Java development and some C/C++ development, you should download the Eclipse IDE for Java Developers and then add the C/C++ development tools via the "Help > Install New Software..." menu option.
The download will be delivered as a compressed (i.e. a ".zip", or ".tar.gz") file. Decompress this file into the directory of your choice (e.g. "c:\eclipse" on Windows) and ensure you have full Read and Execute permissions. You can optionally create a shortcut of the executable file ("eclipse.exe" on Windows, or "eclipse" on Linux).
Note that there is a known problem with the built-in decompression utility on all current versions of Windows. We recommend that you use a more robust decompression utility such as the open source 7zip when decompressing an Eclipse download. Some people report success when initially decompressing Eclipse into a root directory (e.g. c:\) and then moving it to a more appropriate home (e.g. c:\Program Files\Eclipse)
It is strongly recommended to configure Eclipse with the specific JVM that you want. See the instructions at Eclipse.iniThis is a very important step to be sure that Eclipse is using the JVM you intend and can't be influenced by any other software that might alter your system.The JVM used to launch Eclipse has no affect on whether it can compile Java sources for other Java language versions.
Use the Help > Install new software... menu option to add Kepler features to your Eclipse installation (you can, for example, use this option to add C/C++ development support). Additionally, you can tap into a vast collection of extensions provided by the Eclipse community and ecosystem via the Eclipse Marketplace Client (Help > Eclipse Marketplace). Note that not all Eclipse packages contain the Eclipse Marketplace Client.
If you've "installed" Eclipse but are having trouble getting it to run, the most likely cause is that you have not correctly specified the JVM for it to run under. You may need to edit the eclipse.ini file.
Another common mistake on Microsoft Windows is a mismatch between the "bittedness" of Eclipse and the JVM/JDK. This is the most frequent cause of an Error 13. 64-bit Eclipse requires a 64-bit JVM, and 32-bit Eclipse requires 32-bit JVM--you can not mix-and-match between 32-bit and 64-bit, so make sure the version of Eclipse you installed matches the JVM/JDK that you're using to run it (and make sure you're using eclipse.ini to specify the exact JVM used to run Eclipse, described above).
As a simple test, open a Command Prompt window, move to the directory that is pointed to by the -vm argument in your eclipse.ini, and run the intended java.exe with the -d32 switch to test if it supports 32-bit, or -d64 to test for 64-bit support. It's often simplest to download a version of Eclipse that will work with whatever Java you already have installed.
On more recent versions of the Mac, if you don't have a full JDK of an appropriately high version installed, the OS produces this bogus message. Installing any JRE will not eliminate this problem. A full JDK needs to be installed on the Mac.
Eclipse downloads are not password protected. This is a known problem with the built-in decompression utility on all current versions of Windows. We recommend that you either download the installer or use a more robust decompression utility such as the open source 7zip when decompressing an Eclipse download. Some people report success when initially decompressing Eclipse into a root directory (e.g. c:\) and then moving it to a more appropriate home (e.g. c:\Program Files\Eclipse) 2ff7e9595c
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