5️⃣

# 8.5 Break and Continue

Ch. 8 Loops

Sometimes when we’re writing code for a loop, we’ll realize that there is a certain case that we might want to skip, or maybe there’s a case that should cause the loop to be terminated prematurely. To do this, we can use `continue` and `break`, respectively.

The `continue` keyword tells the program to skip to the next iteration. On the other hand, the `break` keyword tells the program to stop the loop completely.

Analyze the program below. What will the output be?

``````// Testing the continue keyword
System.out.println("Testing continue");

int sum = 0;
int number = 0;

// Print the current number from 1-10,
// but skip 7 and 8.
// Also keep a running sum of the numbers.
while (number < 10) {
number++;
if (number == 7 || number == 8) {
continue;
}
sum += number;
System.out.printf("number: %d sum: %d.\n", number, sum);
}

System.out.println("The sum is " + sum);

// Testing the break keyword
System.out.println("\n\nTesting break");

sum = 0;
number = 0;

// Print the current number from 1-6.
// Also keep a running sum of the numbers.
while (number < 10) {
number++;
if (number == 7) { // will never reach 8
break;
}
sum += number; // 7 is never added to the sum
System.out.printf("number: %d sum: %d.\n", number, sum);
}

System.out.println("The sum is " + sum);``````

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Note: This example program uses String formatting. If you are unfamiliar with this, you can read about it here.

Output:

``````Testing continue
number: 1 sum: 1.
number: 2 sum: 3.
number: 3 sum: 6.
number: 4 sum: 10.
number: 5 sum: 15.
number: 6 sum: 21.
number: 9 sum: 30.
number: 10 sum: 40.
The sum is 40

Testing break
number: 1 sum: 1.
number: 2 sum: 3.
number: 3 sum: 6.
number: 4 sum: 10.
number: 5 sum: 15.
number: 6 sum: 21.
The sum is 21

``````

Let’s break down this example. In the first part, we are testing the `continue` keyword. Notice that in the output, after `number: 6 sum: 21`, we go straight to `number: 9 sum: 30`. This is because in the while loop, if `number` is 7 or 8, we continue the loop and skip the code inside of the loop that is after the continue statement.

In the second part, we are testing the `break` keyword. Notice that in the output, after `number: 6 sum: 21`, the loop terminates right away. This is because if `number` is 7, the break statement is executed, which exits the loop completely.

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Note: You can also use `continue` and `break` in a for loop or a do-while loop.

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4️⃣
8.4 Do-While Loops

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6️⃣
8.6 Choosing a Loop

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