Java Tutorial/Statement Control/Continue Statement

Calculating Primes: using continue statement and label

continue may be followed by a label to identify which enclosing loop to continue to.

public class MainClass {
  public static void main(String[] args) {
    int nValues = 50;
    OuterLoop: for (int i = 2; i <= nValues; i++) {
      for (int j = 2; j < i; j++) {
        if (i % j == 0) {
          continue OuterLoop;
        }
      }
      System.out.println(i);
    }
  }
}

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The continue Statement

The continue statement stops the execution of the current iteration and causes control to begin with the next iteration.

For example, the following code prints the number 0 to 9, except 5.

public class MainClass {
  public static void main(String[] args) {
    for (int i = 0; i < 10; i++) {
      if (i == 5) {
        continue;
      }
      System.out.println(i);
    }
  }
}

The continue statement: skips all or part of a loop iteration

public class MainClass {
  public static void main(String[] arg) {
    int limit = 10;
    int sum = 0;
    for (int i = 1; i <= limit; i++) {
      if (i % 3 == 0) {
        continue;
      }
      sum += i;
    }
    System.out.println(sum);
  }
}

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The Labeled continue statement

public class MainClass {
  public static void main(String[] args) {
    int limit = 20;
    int factorial = 1;
    OuterLoop: for (int i = 1; i <= limit; i++) {
      factorial = 1;
      for (int j = 2; j <= i; j++) {
        if (i > 10 && i % 2 == 1) {
          continue OuterLoop;
        }
        factorial *= j;
      }
      System.out.println(i + "! is " + factorial);
    }
  }
}

1! is 1
2! is 2
3! is 6
4! is 24
5! is 120
6! is 720
7! is 5040
8! is 40320
9! is 362880
10! is 3628800
12! is 479001600
14! is 1278945280
16! is 2004189184
18! is -898433024
20! is -2102132736