1) explain the features of Java programming 2) explain the Oops concepts in Java 3) Access Modifiers 4) Check and Unchecked exception in Java 5) explain throw and throws exception handling in Java. 6) What is runtime and compile time polymorphism. 7) why Java is not 100% object oriented programming language 8) Explain difference between Array and Arraylist. 9) write a program to find the 4th highest salary of employee

Question

Accepted Answer

Java programming features, OOPs concepts, access modifiers, exceptions, polymorphism, Java's object-oriented nature, Array vs ArrayList, and a program to find 4th highest salary.

Java features include platform independence, object-oriented, robust, secure, and high performance.
OOPs concepts in Java include inheritance, encapsulation, polymorphism, and abstraction.
Access modifiers in Java are public, private, protected, and default.
Checked exceptions are checked at compile time, while unchecked exceptions are not.
Throw is used to explicitly throw an exception, while throws is used to declare an exception.
Runtime polymorphism is achieved through method overriding, while compile-time polymorphism is achieved through method overloading.
Java is not 100% object-oriented because it supports primitive data types.
Array is a fixed-size data structure, while ArrayList is a dynamic-size data structure.
Program to find the 4th highest salary of an employee involves sorting the salaries and selecting the 4th highest.

Top Hexaware Technologies Executive interview questions & answers

Popular interview questions of Executive

Top HR questions asked in Hexaware Technologies Executive