Fresher Than Fresh Java Developer Interview Questions, Process, and Tips

Q1. What is Jvm and it' architecture?
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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.
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Q2. What is collection
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A collection in Java is a framework that provides an architecture to store and manipulate a group of objects.
• Collections can store objects of different types.

• Common collection types include List, Set, and Map.

• Collections provide methods for adding, removing, and accessing elements.

• Example: List<String> names = new ArrayList<>();
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Q1. What is java and it's features
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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

• Jav...read more
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Q2. Write a java program finding same character
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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
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Q1. About your self
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Q2. Do you know about my company?
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Q1. Java is independent language or Dependent language?
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Q2. How many key words in java?
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Q1. What is oops concept?
Ans. 
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...read more
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Q2. What is strings,data types?
Ans. 
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.
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Q3. What are array?
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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.
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An aptitude test is an exam used to determine an individual's skill or propensity to succeed in a given activity

Coding assessments, otherwise know as coding challenge or coding skills test