![]() IntelliJ IDEA has support for ECJ, as of GNU Compiler for Java (GCJ) 4.Apache Tomcat uses ECJ to compile JSPs,.The fact that Eclipse comes with its own compiler is also apparent because you can write, compile, and run Java code in Eclipse without even installing the Java SDK.Ī few examples where ECJ is preferred over javac is: Otherwise, it will throw an exception indicating that you tried to run code that doesn't compile.Īnother difference is that the Eclipse compiler allows for incremental builds from within the Eclipse IDE, that is, all code is compiled as soon as you finish typing. If the block of code with the error is never ran, your program will run fine. One notable difference is that the Eclipse compiler lets you run code that didn't actually properly compile. Select your configuration - Press delete or use the delete icon. To delete the configuration: - Menu -> Run -> Run Configurations. But you can install the JDK16 support from the Eclipse marketplace once. The latest Spring Tools 4.10.0 release is based on Eclipse 2021-03, which also doesn't ship support for JDK16 out-of-the-box. That will force Eclipse to update its classpaths & rebuild its main indexes. Therefore you don't see an option to use this JDK in your preferences and you don't see an option to switch the internal compiler level to Java 16. The Compiler Compliance level tells Eclipse to use appropriate settings when compiling your project to ensure you code will work on the target JVM you specify. ![]() ![]() Even if you have JDK 6 installed, you could be writing code targeted for people that use JDK 5. If that doesn't work, open the class, ctrl+f11 to run. The Java compiler can compile code that will run on prior versions of the JVM. It is different from the javac, the compiler that is shipped with Sun JDK. Try deleting the run configuration and remaking. Eclipse has implemented its own compiler called as Eclipse Compiler for Java (ECJ). ![]()
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