Object Oriented Programming in JAVA (OOPJ) — Summer 2021

Write Short note on the following:

Byte Code (ii) Polymorphism (iii) Static Initializer Block (iv) Package

Interface (vi) Exception (vii) Deamon thread

Explain importance of constructor. Discuss the overloading of methods and constructors with suitable java program code.

Explain the difference between the variables of primitive data types and the reference data types.

What do you understand by anonymous Inner class? What is the significance of this class in java program?

Explain the features of Java Programming Language.

What role does an interface play in multiple inheritances? Differentiate between abstract class and an interface. Explain with suitable example.

Define checked exceptions and unchecked exceptions. Explain throw, throws, try and catch keywords with ecample.

What are the access specifiers available in Java? Explain each of them and state which of these can be applied to members of a class and which can be applied to members of a package.

What is method overriding? Explain the uses of this and super keyword with example.

What is Collection framework? Explain the List Interface with Example

Define Thread. How different way thread is created in Java? Discuss the Thread life cycle with suitable example of java program code.

What is difference between Vector and Hashtable class? How the Enumeration interface is useful in Java explain with code?

Write a java program that will write 10 numbers in text file and also read from that file to print that 10 numbers on the screen using byte stream based classes.1

To create two different threads. One thread to display odd numbers between 1 to 40 at every 1 second and other thread to display even numbers between 1 to at every 2 seconds.

Define File. Discuss any six methods of file class.

Explain Random Access File in detail.

Write a program of threads to show inter-communication of two threads: t1 and t2 synchronizing on a shared object. Let t1 print message “ping --->” and t2 print message “<--- pong”. Make the threads execute in a way that the output displays a consistent patterns of “ping ---> <--- pong”