If you are not using an EPP with a pre-installed Marketplace Client, you must install it first (from the General Purpose Tools category of the P2 repo).Īnother way to install it is to use Ed's Oomph based installer described here. We recommend to install the support via Eclipse Marketplace because it is crucial that the Eclipse install, the Java 9 VM and the patch match. This is essential if you want to run JUnit tests in the Eclipse IDE using Java 9. This is useful if you have to debug problems, e.g. Install Eclipse Java 9 Support for Oxygen releases before Oxygen.1a
Incorrect arguments after the -vmargs line often cause the JVM to exit immediately. Your eclipse.ini should contain something like:Įach argument must be on its own line, and every line after -vmargs is passed as an argument to the JVM. Inside the "JRE System Library" node, the Package Explorer will show the module in which that type resides. In Eclipse with Java 9 Support for Oxygen (see below), you can open the type in a JavaSE-9 JRE and perform Show In > Package Explorer.Only works in JDK 8, but not in JDK 9: Run jdeps.In that case you have to figure out which module(s) you need to add with -add-modules. Your project might fail to run because you use types that are neither in java.base or .ee, e.g. Since the Eclipse SDK uses types that aren't in the java.base module, you need to add the following vmargs to eclipse.ini: Otherwise it can easily be done by adding something like:Ĭ:\Program Files\Java\jdk-9\bin\javaw.exeįollowing the -launcher.appendVmargs line to the eclipse.ini. If you already do this, simply replace it with a Java 9 VM. If Java is automatically found when launching Eclipse, you need to specify the location of your Java VM. If you are developing Java applications, or are on macOS, you should definitely get the JDK. You need to download and install a Java 9 VM, e.g. 4 Install Eclipse Java 9 Support for Oxygen releases before Oxygen.1a.2 Configure Eclipse to run on Java 9 VM.
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