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Thread: character problem

  1. #1
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    Default character problem

    I am writing a lexical analyzer for a fictional language in java. I have a for loop which prints out the type and the tokens read. The thing is it prints one character at a time and there is a reserved word 'print'. I am having trouble with making it recognize that it is a reserved word and not just a normal one (Identifier).
    Here is my loop:
    private static void readLetters(int i) {
            for (int j=0;j<36;j++)
            {
     
                if (shitarray[i]==letters[j])
                {
                    String abc ="" +shitarray[i];
                    d=abc;
                    if (c != "Identifier ") {
                        c = "Identifier ";
                        System.out.print(c);
                        System.out.print(abc);
     
                    } else {
                        c = "Identifier ";
                        System.out.print(abc);
                    }
     
     
                } 
    }
     
                }
    Thx in advance for any help.
    Last edited by prettynew; November 4th, 2011 at 10:39 AM.


  2. #2
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    Default Re: character problem

    Don't use == for testing String equality. Use the equals() method instead. == tests whether the references point to the same instance, .equals() checks whether they contain the same String value.
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  3. #3
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    Default Re: character problem

    shitarray[] (sry for the name) and letters[] are both char arrays. Any thoughts on how to overcome my problem?

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    Default Re: character problem

    Take a look at the String API. It has several constructors that might be useful to you.
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