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Home»Programming»Core Java Interview Questions with Answers (2025)
Programming

Core Java Interview Questions with Answers (2025)

siliconvlsiBy siliconvlsiJuly 18, 2023Updated:May 26, 2025No Comments2 Mins Read
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Core Java Interview Questions with Answers (2025)

  • What is Bytecode in Java?
  • What is a JIT compiler?
  • What is Bytecode in Java?
  • Bubble Sort Program in Java
  • Coding Guidelines in Java
  • What are Identifiers in Java?
  • What is a class in Java?
  • The Concept of Null in Java
  • What is Package in Java?
  • Public Modifiers in Java
  • Unicode System in Java
  • Java Coding Standards
  • Difference between Java Servlet and CGI
  • What are the different types of Java Tools & Java Networking
  • Servlet JSP Interview Questions for Java
  • Advantages of Exception Handling in Java
  • Can we have try block without catch block?
  • What are Thread Local Variables?
  • Features of the inner member classes in Java
  • What is a collection in Java?
  • What is Inheritance?
  • What are Thread Groups Java?
  • Explain the importance of finally block in java?
  • Explain Features of Interfaces in Java
  • Different types of wrapper classes in Java
  • What is Thread in Java?
  • What are checked Exceptions in Java?
  • What are unchecked exceptions in java?
  • What is Vector Java?
  • Difference between Process and Thread?
  • Differences between checked and Unchecked exceptions in Java
  • What is default Exception handling in Java?
  • Explain Throw keyword in Java
  • What are user Defined Exceptions in Java?
  • How many Classes can be placed in one file in Java?
  • Difference between overriding and overloading in Java?
  • Differentiate Between Character and String Constant Java
  • The different types of Java libraries & Java frameworks
  • What are the type of Classes and Interfaces in Java?
  • What are the different types of Java control statements?
  • What happens if the main method is not declared static in Java?
  • Features of JavaScript
  • What are the different components of the Java platform?
  • What are the benefits of using Java?
  • Can the main method be declared private or protected in Java?
  • Why is the main method static in Java?
  • Is the void return type mandatory for the main method in Java?
  • Why is Java case-sensitive?
  • What are static blocks and static initializers in Java?
  • Difference between Abstract Class and Interface in Java?
  • What is Method Overloading in Java?
  • Why Java is Platform Independent?
  • What are Access Modifiers in Java?
  • Difference between this() and super() in Java?
  • What is method overriding in Java?
  • What is a super keyword in Java?
  • Difference between method overloading and method overriding in Java?
Core Java Interview Question 2023
Core Java Interview Question 2023
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