Bimadirect Interview Questions and Answers

JVM stands for Java Virtual Machine, it is an abstract computing machine that enables a computer to run Java programs.

• JVM is platform-independent and converts Java bytecode into machine code.

• It provides memory management, garbage collection, and security features.

• JVM architecture consists of class loader, runtime data areas, execution engine, and native method interface.

Java program to find and display the characters that are repeated in a given array of strings.

• Iterate through each string in the array

• For each string, iterate through each character and store them in a HashMap with character as key and count as value

• Print the characters that have count greater than 1

OOPS (Object-Oriented Programming) is a programming paradigm that uses objects to represent and manipulate data.

• OOPS focuses on the concept of objects, which are instances of classes.

• It emphasizes encapsulation, inheritance, and polymorphism.

• Encapsulation ensures data hiding and abstraction.

• Inheritance allows classes to inherit properties and behaviors from other classes.

• Polymorphism enables objects to take on multiple forms or behaviors.

• Example: In Java, a class represents a...read more

Java is a high-level programming language known for its portability, security, and object-oriented features.

• Java is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM)

• It is object-oriented, allowing for modular and reusable code

• Java is secure with features like automatic memory management and exception handling

• It supports multithreading, allowing for concurrent execution of tasks

• Java has a rich set of APIs and libraries for various functio...read more

Strings are a data type used to represent a sequence of characters in Java.

• Strings are immutable, meaning they cannot be changed once created.

• String literals are enclosed in double quotes, e.g. "Hello World".

• Strings can be concatenated using the '+' operator, e.g. "Hello" + "World".

• String objects have many useful methods like length(), substring(), etc.

Arrays are a data structure that stores a fixed-size sequence of elements of the same type.

• Arrays can be of any data type, including strings.

• They have a fixed size, which is determined at the time of declaration.

• Elements in an array are accessed using their index, starting from 0.

• Arrays can be used to store and manipulate collections of data efficiently.