Marcio Sousa

That's right! I changed the java version and it worked perfectly. Thank you very much.

I installed robocode 1.9.3.3, tested it and it worked perfectly (I created one and compiled everything normally), after installation of the .net plugin is no longer opening, can you help me? Here's the error: C:\robocode>java -Xmx512M -cp libs/robocode.jar;libs/jni4net.j-0.8.7.0.jar -XX:+ IgnoreUnrecognizedVMOptions "--add-opens=java.base/sun.net.www.protocol.jar=ALL- UNNAMED" "--add-opens=java.base/java.lang.reflect=ALL-UNNAMED" "--add-opens=java .desktop/sun.awt=ALL-UNNAMED" robocode.Robocode Loaded...