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Strange class declaration

Panseer Kaur
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Joined: Nov 01, 2007
Posts: 44
Hey, I've been reading the forum for a while trying to learn Java. More recently I thought it would be a good idea to try to read the Java source code to the libraries. This has been pretty helpful but then I came across this line in Integer.java

public static final Class TYPE = Class.getPrimitiveClass("int");

This really confused me because I thought if we are defining a class it had to be:

public static final Class TYPE {

TYPE () {

return Class.getPrimitiveClass("int");

}

I know there are anonymous classes, is it possible this is what this is?

Thanks ahead of time
Jesper de Jong
Java Cowboy
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Joined: Aug 16, 2005
Posts: 14074
    
  16

Welcome to JavaRanch.

public static final Class TYPE = Class.getPrimitiveClass("int");

Note that it says "Class" with a capital C, not "class" with a lower-case c.

The word "class" with a lower-case c is a Java keyword that is used to declare new classes, but the word "Class" with a capital C is something completely different: it's the class named "Class" in the java.lang package.

So, TYPE is an instance of class Class in the line of code above. It's not a class declaration at all. Do you see?

Look up the API documentation of class java.lang.Class.
[ November 01, 2007: Message edited by: Jesper Young ]

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Panseer Kaur
Ranch Hand

Joined: Nov 01, 2007
Posts: 44
Yup I get it. Makes perfect sense now.

Should have been obvious to me. Thanks though
 
 
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