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How to use break in javaMay 01, 2024 pm 06:36 PM

The break statement in Java is used to exit a loop or switch statement. It can be used to: 1. Exit a loop when a condition is met; 2. Exit a switch statement when a specific case is matched. Note that break can only be used to exit the loop or switch statement in which it is contained.

How to use break in java

Usage of break in Java

In Java, the break statement is used to exit the currently executing loop or switch statement. It causes the program to break out of the loop or switch statement and continue executing the statements following the loop or switch statement.

Grammar

The syntax of the break statement is very simple:

break;

Usage

The break statement is usually used In the following situations:

  • Exit the loop: When certain conditions are met, you can jump out of the loop. For example:
for (int i = 0; i < 10; i++) {
    if (i == 5) {
        break;
    }
    System.out.println(i);
}
  • Exit the switch statement: When a specific case is matched, the switch statement can be jumped out. For example:
switch (color) {
    case "red":
        System.out.println("颜色是红色");
        break;
    case "green":
        System.out.println("颜色是绿色");
        break;
    default:
        System.out.println("未知颜色");
}

Note: The

  • break statement cannot be used to exit an if statement or other selection structure.
  • The break statement can only be used to exit the loop or switch statement in which it is located.

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