Java While 循环

循环

循环可以在满足特定条件时重复执行代码块。

循环很方便，因为它们可以节省时间，减少错误，并使代码更具可读性。

Java While 循环

while 循环会不断循环执行代码块，直到满足特定条件为 true

语法

while (condition) {
  // code block to be executed
}

在下面的示例中，循环中的代码将一遍又一遍地运行，直到变量 (i) 小于 5

示例

int i = 0;
while (i < 5) {
  System.out.println(i);
  i++;
}

自己试试 »

注意： 不要忘记增加条件中使用的变量，否则循环将永远不会结束！

★ +1

W3schools Pathfinder

Track your progress - it's free!

颜色选择器

Contact Sales

If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail:
[email protected]

Report Error

If you want to report an error, or if you want to make a suggestion, send us an e-mail:
[email protected]

W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. While using W3Schools, you agree to have read and accepted our terms of use, cookie and privacy policy.

Copyright 1999-2024 by Refsnes Data. All Rights Reserved. W3Schools is Powered by W3.CSS.

Java 教程

Java 方法

Java 类

Java 文件处理

Java 如何做

Java 参考

Java 示例

Java While 循环

循环