1. Explain More about classes?

Answer

• l A class is usually described as the template or blueprint from which the object is actually made.
• l A class is nothing but new data type
• l Keyword class is used to create new classes (data types)
• l Keyword extends is used to inherit the features of another class
• l Any class declared, automatically extends java.lang.Object classes, "The Mother of all classes"

2. Explain About java methods?

Answer

• A method in Java is similar to function in C/C++ or any other language
• A method is declared inside a class and belongs to the same class
• A method can be called using . operator.

3. Explain About java member (instance) variables?

Answer:

• l Accessible from any method in the class.
• l Scope of the member variables is the entire class scope.
• l If there is no explicit initialization, then the value depends upon the data type of the member variable.

4. What are the technical behavior of the java automatic variables?

Answer:

• Also known as local variables generally declared inside the methods.
• Scope of the automatic variable is the scope of the method.
• Automatic variables are not initialized by the compiler.
• All the variables defined in a method scope must be initialized explicitly before being used.

5. What about java access modifiers?

Answer:
Java has access specifiers are public, private, protected. These can be placed infront of each definition for each member in your class, whether it's a data member or a method. Each access specifier controls the access for only that particular definition. This is a distinct contrast to C++, in which the access specifier controls all the definitions following it until another access specifier comes along.

Java access Modifiers.

• l public
• l private
• l protected

Note: These controls access to a class, a method, and member variable or an instance variable.