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.

   <source lang="java">

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);
   }
 }

}</source>

2
3
5
7
11
13
17
19
23
29
31
37
41
43
47

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.

   <source lang="java">

public class MainClass {

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

}</source>

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

   <source lang="java">

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);
 }

}</source>

37

The Labeled continue statement

   <source lang="java">

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);
   }
 }

}</source>

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