What is the difference between List and Set?
Understand the key differences between List and Set in Java. Learn about ordering, duplicates, and use cases to choose the right data structure in coding.
What is the use of static variables?
Learn the purpose of static variables in Java. Discover how they retain shared values across class instances and support memory-efficient design
Why is the main method static?
Discover why the main method in Java is static. Learn how it enables the JVM to invoke it directly without creating an object, ensuring program startup.
Can we use multiple catches? When can we use multiple catches?
Learn when and how to use multiple catch blocks in Java exception handling. Discover how to target specific errors and ensure robust, readable code flow
Why do we use finally and how it differs from the final keyword?
Learn the difference between finally and final in Java. Understand how finally ensures cleanup after exceptions and final secures immutability in code.
Where do you use Polymorphism in java? Explain W.R.T Automation.
Explore how polymorphism is used in Java to write flexible, reusable code. Learn its role in method overriding, interfaces, and dynamic behavior.
Can we override Constructor?
Learn why constructors in Java can't be overridden. Understand the difference between overriding and overloading, and how constructor chaining works.
How and when to use interface?
Learn how and when to use interfaces in Java. Discover their role in abstraction, multiple inheritance, and flexible architecture design in OOP
What is Polymorphism?
Explore polymorphism in Java and its role in object-oriented programming. Learn how it enables method overriding, flexibility, and dynamic behavior in code
Difference between throw and throws?
Learn the difference between throw and throws in Java. Understand how each handles exceptions and affects method declaration and flow control