Java中的“public static void"是什么意思? [英] What does 'public static void' mean in Java?

问题描述

public static void 在 Java 中是什么意思?

What does public static void mean in Java?

我正在学习中.在本书的所有示例中，我从 public static void 开始工作，它出现在任何正在使用或创建的方法之前.这是什么意思?

I'm in the process of learning. In all the examples in the book I'm working from public static void comes before any method that is being used or created. What does this mean?

推荐答案

这是三个完全不同的东西:

It's three completely different things:

public 表示该方法是可见的，可以被其他类型的其他对象调用.其他替代方案是 private、protected、package 和 package-private.请参阅此处了解更多详情.

public means that the method is visible and can be called from other objects of other types. Other alternatives are private, protected, package and package-private. See here for more details.

static 表示方法与类相关联，而不是与该类的特定实例(对象)相关联.这意味着您可以在不创建类的对象的情况下调用静态方法.

static means that the method is associated with the class, not a specific instance (object) of that class. This means that you can call a static method without creating an object of the class.

void 表示该方法没有返回值.如果该方法返回 int，您将编写 int 而不是 void.

void means that the method has no return value. If the method returned an int you would write int instead of void.

这三者的组合最常见于大多数教程将包含的 main 方法.

The combination of all three of these is most commonly seen on the main method which most tutorials will include.

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