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I want to start using Java 8 with Eclipse but I don't know how to install it - I can't find any tutorials on it. I am using Eclipse Kepler and have added a JRE for JDK 8 to the IDE but it won't let me continue to create the project because of a compliance problem with the JRE versions. How can I use Java 8 with the Eclipse Kepler IDE?
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A Java 8 or newer JRE/JDK is required to run all Eclipse 2019-09 packages based on Eclipse 4.13, as well as the Installer.
javac -source 1.8 (is an alias for javac -source 8 ) java.
If you are using Eclipse for only Enterprise Development, then as everybody has recommended I would use the Eclipse Java EE version. If you plan on occasionally using it for other development purposes then I would consider downloading a separate classic version as well.
Have a look at this bug report from time to time for progress on Java 8 in Eclipse's JDT.
EDIT: For Kepler you need SR2 (4.3.2) and the Java 8 feature patch. Starting with I20140318-0830 all Luna (4.4) builds contain support for Java 8 "out-of-the-box". The final version of Eclipse Luna (4.4) will be released at the end of June 2014.
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Now, after Java 8 is released, there is a feature patch, but only for Kepler SR2 (4.3.2). Installation via
Help > Install New Software... > 'Work with': http://download.eclipse.org/eclipse/updates/4.3-P-builds/
see Tutorial Installing Java 8 on Eclipse Kepler
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