Entry-level Java Programming Interview
Questions 2025/2026 Exam All Answers
1
and Illustrations Given
What are the main features of Java? - 🧠 ANSWER ✔✔1. Object-oriented
2. Simple
3. Platform Independent
4. Secured
5. Robust
6. Portable
7. Multithreaded
8. Distributed
What are the fundamental principles of OOP? - 🧠 ANSWER ✔✔1.
Inheritance
2. Abstraction
3. Polymorphism
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, 4. Encapsulation
What is Inheritance in Java? - 🧠 ANSWER ✔✔Inheritance is one of the key
2
principles of OOP. Through Inheritance, one class can inherit the properties
of another class. The class from which properties are inherited is called a
"super" class and the class to which properties are inherited is called a sub
class.
What is Constructor Overloading and its use? - 🧠 ANSWER ✔✔A class can
have any number of constructors. These constructors will have different
lists of arguments. It is called constructor overloading. Constructor
overloading provides different ways to instantiate a class.
What is polymorphism in Java? - 🧠 ANSWER ✔✔Polymorphism refers to
any entity whether it is a method, constructor or an operator which takes
many forms or can be used for multiple tasks.
What is method overloading in Java? - 🧠 ANSWER ✔✔When a class has
more than one method with the same name but with different lists of
arguments.
What is method overriding? - 🧠 ANSWER ✔✔When a super class method
is modified in the sub class then it is called method overriding.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
Questions 2025/2026 Exam All Answers
1
and Illustrations Given
What are the main features of Java? - 🧠 ANSWER ✔✔1. Object-oriented
2. Simple
3. Platform Independent
4. Secured
5. Robust
6. Portable
7. Multithreaded
8. Distributed
What are the fundamental principles of OOP? - 🧠 ANSWER ✔✔1.
Inheritance
2. Abstraction
3. Polymorphism
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, 4. Encapsulation
What is Inheritance in Java? - 🧠 ANSWER ✔✔Inheritance is one of the key
2
principles of OOP. Through Inheritance, one class can inherit the properties
of another class. The class from which properties are inherited is called a
"super" class and the class to which properties are inherited is called a sub
class.
What is Constructor Overloading and its use? - 🧠 ANSWER ✔✔A class can
have any number of constructors. These constructors will have different
lists of arguments. It is called constructor overloading. Constructor
overloading provides different ways to instantiate a class.
What is polymorphism in Java? - 🧠 ANSWER ✔✔Polymorphism refers to
any entity whether it is a method, constructor or an operator which takes
many forms or can be used for multiple tasks.
What is method overloading in Java? - 🧠 ANSWER ✔✔When a class has
more than one method with the same name but with different lists of
arguments.
What is method overriding? - 🧠 ANSWER ✔✔When a super class method
is modified in the sub class then it is called method overriding.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
