which class is the length data member in java part of?

arrayExample.legth is of int type

java.util

Interface: Collections

Classes:Arrays

Class Arrays
java.lang.Object
java.util.Arrays

sorry I mis understood the question

http://java.sun.com/j2se/1.5.0/docs/api/

In packages Search and click : java.util

you'll see The interface: Collection
And The Class:Arrays:

on the right and side you'll see the methods implemented by Array

hope that answers your questions!

@himanshut: java.util.Arrays doesn't have the data member length

length() method belongs to the String class

I donot think that length is acquired from a class. If we see the methods and variables that the array has, it acquires the length from int[], which seems to point to the compiler, which inserts the length variable fro the array.

Have a look at the image.


untitled.JPG

Java arrays are classes and length is a (public final) member of that class


"The public final field length, which contains the number of components of the array (length may be positive or zero)"
http://java.sun.com/docs/books/jls/second_edition/html/arrays.doc.html

"Arrays are first-class objects

Regardless of what type of array youre working with, the array identifier is actually a handle to a true object thats created on the heap. The heap object can be created either implicitly, as part of the array initialization syntax, or explicitly with a new expression. Part of the heap object (in fact, the only field or method you can access) is the read-only length member that tells you how many elements can be stored in that array object. The  [] syntax is the only other access that you have to the array object. "

Ref  - http://www.codeguru.com/java/tij/tij0087.shtml