Java Test Paper QnA FAQ's - Thoraipakkam OMR Branch

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Java Test Paper QnA FAQ's

Q1.Write Java code to demonstrate Single Inheritance.

Q2. Write Java code to demonstrate Multilevel Inheritance.

Q3. Write Java code to demonstrate Hierarchical Inheritance.

Q4. Write Java code to demonstrate Method Overloading.

Q5. Write Java code to demonstrate Method Overriding.

Q6. Write Java code to create and use an Abstract Class.

Q7. Write Java code to create and use an Interface.

Q8. Write Java code to demonstrate Multiple Inheritance using Interfaces.

Q9. Create a class with constructor overloading using a no-argument and a parameterized constructor

Q10. Create a List, and perform the following operations: Add elements, Retrieve a single element, Iterate over all elements, Update an element & Delete an element

Q11. Create a Set, and perform the following operations: Add elements, Iterate over all elements & Delete an element

Q12. Create a Map, and perform the following operations: Add key-value pairs, Get all keys, Get all values, Get all entries & Iterate through the map

Q13. Create a user-defined List, and perform the following operations: Add elements & Retrieve all elements

Q14. Create a user-defined Set, and perform the following operations: Add elements & Retrieve all elements

Q15. Create a user-defined Map, and perform the following operations: Add elements Retrieve all elements

Q16. List 12 commonly used methods in the String class.

Q17. Write Java code to implement the Singleton Design Pattern.

Q18. Write Java code to handle exceptions using try, catch, and finally blocks.

Q19. Write Java code for a user-defined exception.

Q20. Write Java code to read values from a file.

Q21. Write Java code to insert 5 numeric values into an array and iterate using an enhanced for loop.

Q22. Write Java code to convert an Array to an Arraylist.

Q23. Write Java code to declare a String in 4 different ways.

Q24. Write Java code to remove unused objects using the finalize() method.

Q25. Create a constructor and pass this as an argument to call another constructor.

Q26. Create a constructor and pass super as an argument to call another constructor.

Q27. Write any 5 examples each of checked and unchecked exceptions in Java. (Mention their names)

Q28. Create a class with a static method and a static variable, and call them from another class

Q29. Create a Java List without using generics and add different types of data. Iterate and print each element.

Q30. Write syntax examples for the following statements: if, else if, else, switch, for loop, while loop, do-while loop, break, continue, return.

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