Using a for loop in Java to process a string

Question

I can never get this to loop all the way through the string. I can't use >= or == in this loop it stops it from working :( help

    int s = 0;
    String twocharacters = "";

    for (int i = 0; i < value.length(); i++){

        char c = value.charAt(i);
        char w = value.charAt(i + 1);

        if (c == '/' && w == '*' && s == 0){
            s = 1;
        }
        else if (c == '*' && w == '/' && s == 1){
            s = 0;
        }
        else if (s == 0 && c != ' ' && c != '*' && c != '/'){
            twocharacters += c;
            System.out.println(twocharacters);
        }
    }

You'll also want to stop one character before the end because of the charAt(i + 1). — Dave Newton
– Dave Newton, Commented Dec 7, 2011 at 0:46
char w = value.charAt(i + 1) will lead to an exception when i == value.length() - 1 — Robin
– Robin, Commented Dec 7, 2011 at 0:46
if you want to do a charAt(i + 1), you should run the loop only till i < length -1. — aishwarya
– aishwarya, Commented Dec 7, 2011 at 0:48

Will · Accepted Answer · 2011-12-07 00:48:01Z

3

At the last iteration (i = value.length() - 1), assigning value.charAt(i + 1); to w would throw an exception because you are at the end of the string and cannot get the next character.

Try:

for (int i = 0; i < value.length() - 1; i++){

answered Dec 7, 2011 at 0:48

Will

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