![]() ![]() Instead, Eclipse uses its own internal compiler to provide more advanced features like incremental compilation – for quickly compiling only small changes you have made – not recompile the full project.And Eclipse compiler requires JRE to run its compiled. You can skip the steps 1 and 2 if your project is already configured with JRE/JDK that supports the Java version to which you want to change.Before going into each step in details, I think it’s worth to understand some background information first.You know, JDK provides the javac tool for compiling Java source code but Eclipse doesn’t use javac. Update Java Build Path for the project, pointing to the new JRE/JDK.Add that JRE/JDK to Eclipse’s list of installed JREs.Install JRE/JDK that supports the Java version you want to use. ![]() Now you want to upgrade the project to be compiled with Java 11.To summary, here are the steps to change Java compiler version for a project in Eclipse IDE: For example, you have to maintain an Eclipse project was developed at the time of Java 1.8. In this post, I will show you how to change Java version used to compile a project in Eclipse IDE.
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