Object Oriented Programming Using Java

Which of the following is not a core feature of Object-Oriented Programming?

1. Inheritance
2. Encapsulation
3. Polymorphism
4. Compilation

What is the main purpose of a class in Java?

1. To create objects
2. To store data only
3. To execute the program
4. To handle exceptions

Which access modifier provides the highest visibility in Java?

1. Private
2. Protected
3. Public
4. Default

Method overloading is an example of

1. Compile-time polymorphism
2. Runtime polymorphism
3. Inheritance
4. Abstraction

Method overriding demonstrates

1. Compile-time polymorphism
2. Runtime polymorphism
3. Encapsulation
4. Abstraction

Which of the following is used to achieve 100% abstraction in Java?

1. Abstract class
2. Interface
3. Final class
4. Static class

A class can implement

1. Only one interface
2. Multiple interfaces
3. Only one abstract class
4. Multiple abstract classes

The Object class is

1. The root of all classes in Java
2. A user-defined class
3. An interface
4. A final class only

Which keyword is used to import a package?

1. package
2. import
3. include
4. using

String class in Java is

1. Mutable
2. Immutable
3. Abstract
4. Final but mutable

Explain the different types of access modifiers available in Java and describe their visibility scopes with suitable examples.

Explain the difference between procedural programming and object-oriented programming paradigms. Why is Java considered an object-oriented language?

Describe the concept of method overloading and method overriding with the help of suitable examples from Java.

Explain the difference between an interface and an abstract class. How does Java support multiple inheritance using interfaces?

Describe the exception hierarchy in Java. Differentiate between checked and unchecked exceptions with examples.

Write a complete Java program to demonstrate the use of constructors (default, parameterized, copy), method overloading, and the ‘this’ keyword.

Write a Java program to handle multiple exceptions using nested try-catch blocks and the finally clause. Include re-throwing of exceptions.

Write a JDBC program to connect to a database, insert a record into a “Student” table, and retrieve all records using the Collections Framework (ArrayList) to store the results.

Compare and contrast inheritance hierarchies with interface implementation. Analyze when you would prefer interfaces over abstract classes in a Java project.

Evaluate the impact of garbage collection and the finalize() method on Java program performance. Is it advisable to rely on finalize() for resource cleanup? Justify your answer.

“Multithreading improves performance but introduces complexity.” Critically evaluate this statement with reference to thread synchronization, priorities, and inter-thread communication.

Explain the key features of Object-Oriented Programming and describe how each feature provides advantages over procedural programming.

What is the purpose of break and continue statements in loops? Explain with examples.

Write a Java program to print all odd numbers between 1 to 50 using a while loop.

History of java

Concept of Packages in Java

Polymorphism

Multiple inheritance