Java Objects and classes

A class can contain the following types of variables:

• Local Variables : variables defined in a method, construction method, or block of statements are called local variables. Both the Declaration and initialization of variables are in the method, and the variables are automatically destroyed when the method ends.
• member variables: member variables are variables that are defined in the class, outside the method body. This variable is instantiated when the object is created. Member variables can be accessed by methods, construction methods, and statement blocks of specific classes within a class.
• Class variables : Class variables are also declared in the class, outside the method body, but must be declared as static types.

 Public classpuppy{intPuppyage;  PublicPuppy (String name) {//This constructor has only one parameter: nameSystem.out.println ("Passed Name is:" +name); }    Public voidSetage (intAge ) {Puppyage=Age ; }    Public intGetage () {System.out.println ("Puppy's age is:" +puppyage); returnPuppyage; }    Public Static voidMain (String []args) {/*Creating Objects*/Puppy mypuppy=NewPuppy ("Tommy" ); /*use the method to set age*/Mypuppy.setage (2 ); /*call another method to get the age*/Mypuppy.getage (); /*You can also access member variables as follows*/System.out.println ("Variable Value:" +mypuppy.puppyage); }}

Compile and run the above program to produce the following results:

PassedNameis:TommyPuppy's ageis:2variable value:2     

Java Objects and classes