Question about access non-public class from other package.

Hi, everyone!
Suppose class A and class B are in the same java file of package pkg1
-- A.java. So, A is a public class and B is a non-public class.
If I want to access class B from another class class C and class
C is in package pkg2. When compiling, an error occurs indicating
that class B is not visible to class C.
So, If I defined serveral classes in one java file and I want to
access every class from other package. How should I do?
(I think in one java file, there should be only one public class and
only the public class can be accessed from other package.)
Thanks in advance,
George

So, If I defined serveral classes in one java file and
I want to
access every class from other package. How should I
do? As you already seem to know, there is at most one public class allowed per source file (at least, with javac and most popular compilers). So if you want more than one public class, you will need to use more than one file...

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Date: Sat, 13 Apr 2013 16:27:45 -0700
From: [email protected]
To: [email protected]
Subject: question: about accessing Nik collection through Lightroom
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Message was edited by:
vaibhavpingle

but it then gives me this error
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Easy question: Give access to a class in another class.

Stupid title, but dont know how to express myself :P Sorry for that.
To the problem. Never had this problem before, and I know its a really easy solution to this.
I have my Main class, which creates a MyView class. Inside this class, I make to new classes(or instances of classes i've already made), MyPanel and MyToolsPanel. Now I want to add buttons inside the MyToolsPanel class, and add actionlisteners to these buttons inside MyPanel.
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EDIT: I might have to implement actionListener inside the MyToolsPanel class?
Edited by: Stianbl on Sep 28, 2008 4:59 PM

one way:
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    java.awt.EventQueue.invokeLater(new Runnable()
      public void run()
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Are there non-public classes in Java SDK?

Or are ALL classes in all packages of the Java SDK public?
I have looked in the sources spot checking and didn't find a non public (default) class.
If all classes are public, why?
There exists a means in Java language to define a class as default ("class MyClass" instead of "public class MyClass") visibility. So why isn't it used by Java SDK (if this is really true)?

I dont know what language you're programming in.
If you don't specify
public class
or
private class
the class is "protected".
Read the spec.If you read the spec, you'll see that, with respect to a class:
(per section 6.6.2) Classes from outside the package the class lives in that extend the class have access to protected members.
(per section 6.6.5) Classes from outside the package this thing lives in that extend this class do not have access to default members.
Relevant part of section 6.6.5 (Example: Default-Access Fields, Methods, and Constructors) is:
If none of the access modifiers public, protected, or private are specified, a class member or constructor is accessible throughout the package that contains the declaration of the class in which the class member is declared, but the class member or constructor is not accessible in any other package.
This is default access, not protected access
Lee

Question about access non-public class from other package.

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