http://opensmpp.logica.com/CommonPart/Documentation/Documentation.htm
All Java API classes are available by default in jdk 1.4.2 for Ex: classes inside java.lang, java.io etc.
Final classes are sealed classes in java I guess.
Java or Java SE comes with the standard library, with all the crazy classes to make life easy. Java Core does not come with most of these classes, so that it is a lot smaller.
The answer to this is related to the idea of inheritance in general - the idea of inheritance is that you define a common set of behaviors, that apply to all subclasses. Anything defined in the "Object" class is available to all classes you create. Look in the documentation for the description of the "Object" class, to see what methods are available in all Java classes.
a package
We use the classes in java to reuse their coding for the child classes.So as to save our time and development overhead.
You would use the import command. For example:import java.lang;To do this with custom classes, it requires two things:These classes are grouped inside a package, so the java program can use themThese packages are included inside the program, just like the java jdk
You can only have one non-inner public classes per java file and that class name must match the filename. The java file can also have any number of inner classes and anonymous classes.
Fields and methods. Fields are variables defined at the class level, i.e., they are available for all methods. Methods are the equivalent of functions / procedures, but they are defined for a specific class.
In java 1.1 version 250 classes are there java 1.2 version 500 classes are there i don't about other versions. but i want to know other version classes also. please post any body known these other version classes list....
A local class is declared locally within a block of Java code.You can even have classes declared inside a method. such classes are called local classes.
1.Outer Classes 2. Inner Classes