![]() ![]() Then choose alternate jre again and in the drop-down choose jdk-1.8.0 or some name like that. Then simply hit ok,select the jdk-8 library and close it. You can configure the default arguments for your jvm runtime. ![]() Usually it is something like C:\Program Files\Java\jdk1.8.0_251. ![]() This means old code doesnt have to be modified to work with the new language version, but it also means you will be unable to use any language features that have been added to the Java language in the last 15 years. This is what you will see JRE System Library chooser imageĬhoose "Alternate JRE" then click "Installed JREs" Step Image Setting compiler compliance level to 1.6 instructs your modern Java compiler to pretend it is the old Java 6 compiler. Right click the library named somthing like "JRE system library". Although you can change the defaults, this one will help you change the environment back to java 8 for 1 project. Here is a method you could use to get JRE 8 implemented back in your project. In the project's preferences, go to 'Builders', add a new custom builder (which can be either an Ant script or an executable program) and disable the. You can define a custom builder for your project which will call your javac. The built-in compiler obviously doesn't support Java 8 yet. Search for 'batch-compiler' in pom files of the projects mentioned above, to see how the compiler is assembled. Eclipse uses a built-in compiler rather than javac. It is true that in order to use eclipse 2020-09 you need java 11+ jdk/jre, but making projects that support jre 8 is still possible.Even I still use 2020-06 and before. During production builds class files from different projects need to be merged into the single ecj.jar (this jar file is created as -SNAPSHOT-batch-compiler.jar and renamed to ecj.jar afterwards). JRE 8 apps in eclipse workspace is possible by having the jre 8 jdk. ![]()
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