CODEWITHSUNDEEP
javasyntax
SDG
SDG

Reputation: 2342

I do not understand this error 'Syntax error on token ";", { expected after this token'

Currently I have the error Syntax error on token ";", { expected after this token, in the code shown below: 

public class findKey {

private final static ArrayList<Integer> listofPrimes = new ArrayList<>();

//Number of Primes we want
private final static int N = 224;

for (int candidate = 2, count = 0; count < n; ++candidate) {
    if (isPrime(candidate)) {
        ++count;
        listofPrimes.add(candidate); 
    }
}

// Very Simple isPrime() Function
// Miller-Rabin Algorithm added for reference
private static boolean isPrime(int num) {

    if (num == 2 ) {
        return true;
    }
    if (num % 2 == 0) {
        return false;
    }
    for (int i = 3; i * i <= num; i += 2) {
        if (num % i == 0) return false;
    }

    return true;
}

public static int convertKey (String input) {

    int result; 
    char[] charArray = input.toCharArray();

    for (int i = 0; i < charArray.length; i++){
        result *= listofPrimes.get(convertInt(charArray[i]));
    }

    return result;
}

private static int convertInt (char a) {

    int ascii = (int)a; 
    int i = ascii - 32;

    return i;
}
}

I do not understand what the error is. I am sure it is something very stupid that I am blanking over. All help will be appreciated with this problem.

Any extra details will be answered if asked.

Upvotes: 1

Views: 879

Answers (2)

Elliott Frisch
Elliott Frisch

Reputation: 201447

It appears based on your comment

Can for loops not exist outside a method in a class? I just started programming in Java after C

that you expect the behavior of a static initializing block. Something like,

static {
    for (int candidate = 2, count = 0; count < n; ++candidate) {
        if (isPrime(candidate)) {
            ++count;
            listofPrimes.add(candidate); 
        }
    }
}

Upvotes: 1

Steve Kuo
Steve Kuo

Reputation: 63094

Your for loop

for (int candidate = 2, count = 0; count < n; ++candidate) {
    if (isPrime(candidate)) {
        ++count;
        listofPrimes.add(candidate); 
    }
}

is not in a method.

Upvotes: 2

Related Questions