does not override method error

Question

I'm getting this exception thrown in my java code when trying to run the file.

Exception in thread "main" java.lang.ExceptionInInitializerError
at DemoLexer.<clinit>(GenLexer.java:309)
at LexerDemo.main(GenLexer.java:325)
Caused by: java.lang.RuntimeException: Uncompilable source code - MH_Lexer.VarAcceptor is not abstract and does not override abstract method dead(int) in GenAcceptor
Lexer>  at GenAcceptor.<clinit>(GenLexer.java:14)
... 2 more
Java Result: 1
BUILD SUCCESSFUL (total time: 1 second)

The issue is that my VarAcceptor class has a clearly defined and implemented dead(int) method and that file itself doesn't show any errors, which it otherwise does when you don't implement the methods properly so I don't know how to solve this, seeing that the error makes no sense to me with the method in question being implemented correctly. I have also added the @Override annotation to the method.

  static class VarAcceptor extends GenAcceptor implements DFA {

    @Override
    boolean dead(int state) {
        return 0;
    }
}

Interface GenAcceptor:

abstract class GenAcceptor {

    abstract String lexClass() ;
    abstract int numberOfStates() ;
    abstract int nextState (int state, char input) ;
    abstract boolean accepting (int state) ;
    abstract boolean dead (int state) ;
}

You need to add the actual code if we are gonna help you at all. — Gemtastic, Oct 25 '15 at 00:26
all it has is the method declarations and code not relevant to the issue but ill add it if it helps — Alk, Oct 25 '15 at 00:29
I only have this `import java.io.*;` but its not throwing any errors which it usually does if u forget to import stuff — Alk, Oct 25 '15 at 00:39
ok put your cursor right after GenAcceptor and press Ctrl + Space — , Oct 25 '15 at 00:40
do you mean in the static class extends line or in the original place I declared genAcceptor? — Alk, Oct 25 '15 at 00:43
The thing is the static declerations were given to us in the exercise so I think that's how its supposed to stay — Alk, Oct 25 '15 at 00:46
Possible similar useful question http://stackoverflow.com/questions/2333285/java-lang-runtimeexception-uncompilable-source-code-what-can-cause-this — Adam P, Oct 25 '15 at 00:47
Yep that solved it @AdamP, post it as an answer, I'll accept — Alk, Oct 25 '15 at 00:51
Turned out to be a netbeans error rather than anything in my code. Changing the settings solved the issue — Alk, Oct 25 '15 at 00:52
Okay, I could not figure it out because your code did look right but that is great you figured it out, Take Care — , Oct 25 '15 at 00:55

score 0 · Answer 1 · answered Oct 25 '15 at 01:18

0

You can't return 0 from a boolean method

answered Oct 25 '15 at 01:18

Matt Timmermans

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That was just an example, I'm not returning 0...please remove this if you can as the problem was solved in the comments – Alk Oct 25 '15 at 02:39

score 0 · Answer 2 · edited May 23 '17 at 11:59

0

java.lang.RuntimeException: Uncompilable source code - what can cause this?

The error is described in this link. It is a netbeans issue which requires turning off a setting in project properties.

edited May 23 '17 at 11:59

Community

1
1

answered Oct 25 '15 at 02:39

Alk

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does not override method error

2 Answers2