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javaeclipsereflectioncompiler-errorsjavac

Using -parameters option in eclipse for reflection

To obtain method parameters names using java reflection we have to compile the Java class with "-parameters" option, but when I do it from eclipse using VM Arguments, I get the following error in console. 

Unrecognized option: -parameters
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

I have Java 8 running in my system. What am I missing?

Solution

  • The problem is that this is not a VM argument. i.e.; It's not meant to be used with java, but rather with javac.

    In eclipse, you can go to:

    • Window > Preferences > Java > Compiler , or to
    • Project > Properties > Java Compiler

    And there is a check box to enable "Store information about method parameters (usable via reflection)." That you can use for this.