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Java Senior Interview Questions

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6,038 java senior interview questions shared by candidates

Java Fundamentals: Can you explain the difference between final, finally, and finalize in Java? How do these keywords work, and when would you use each? Object-Oriented Programming: Can you describe the principles of Object-Oriented Programming (OOP) and provide an example of how you've used inheritance and polymorphism in a Java project? Concurrency: Java provides several ways to create multithreaded applications. Can you explain the differences between implementing the Runnable interface and extending the Thread class? Java Libraries and Frameworks: Suppose you were building a RESTful API in Java. Which frameworks or libraries would you use, and why? Problem Solving: (Provide a specific coding problem relevant to your project or company). How would you approach solving this problem in Java? Can you write a pseudocode or actual code to illustrate your solution?
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Senior Java Developer

Interviewed at Bell Integrator

4.3★
Jun 2, 2023

Java Fundamentals: Can you explain the difference between final, finally, and finalize in Java? How do these keywords work, and when would you use each? Object-Oriented Programming: Can you describe the principles of Object-Oriented Programming (OOP) and provide an example of how you've used inheritance and polymorphism in a Java project? Concurrency: Java provides several ways to create multithreaded applications. Can you explain the differences between implementing the Runnable interface and extending the Thread class? Java Libraries and Frameworks: Suppose you were building a RESTful API in Java. Which frameworks or libraries would you use, and why? Problem Solving: (Provide a specific coding problem relevant to your project or company). How would you approach solving this problem in Java? Can you write a pseudocode or actual code to illustrate your solution?

1. Why is Java a platform independent language? 2. Why is Java not a pure object oriented language? 3. Pointers are used in C/ C++. Why does Java not make use of pointers? 4. What do you understand by an instance variable and a local variable? 5. What do you mean by data encapsulation?

Senior Java Developer

Interviewed at Andryan IT Solutions

2.5★
Sep 21, 2021

1. Why is Java a platform independent language? 2. Why is Java not a pure object oriented language? 3. Pointers are used in C/ C++. Why does Java not make use of pointers? 4. What do you understand by an instance variable and a local variable? 5. What do you mean by data encapsulation?

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