Java - 类“ClassName”之间的区别和公共类“ClassName” [英] Java - The difference between class "ClassName" and public class "ClassName"

问题描述

之间有什么区别

  class x {
 // code here 
} 
  

和

  public class x {
 // code here 
} 
  

在因特网上的例子，他们会有 public class 而不是 class ，他们都是简单的程序。我使用 class 作为我的作业。

解决方案

第一个将导致您的类被分配默认可见性，即 package-private （ie：在同一个包内访问）。

第二个使它 public ，即对任何其他类可见。 p>

参考：控制对类成员的访问

What's the difference between

class x {
    //code here
}

and

public class x {
    //code here
}

Sometimes I see examples on the Internet and they'll have public class instead of class and they're all simple programs. I use class for my assignments and so does everybody else

解决方案

The first one will result in your class being assigned the default visibility, that is package-private (ie: accessible within the same package).

The second one makes it public, that is, visible to any other class.

Reference: Controlling Access to Members of a Class

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