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Arrays in Java

Last Updated : 26 May, 2026

title: Array Introduction

Fundamentals76 words5 headingsTables includedExamples included

title: Array Introduction description: Java mein arrays ka introduction aur basics

Array ek fixed-size container hai jo same data type ke multiple elements store karta hai.

Array kya hai?

Ek variable mein multiple values store karna
Contiguous memory locations
Index 0 se start hoti hai

Array Declare karna

// Declaration int[] arr; // Preferred int arr2[]; // Also valid // Declaration + Initialization int[] nums = new int[5]; // 5 elements, default 0 // Direct initialization int[] marks = {95, 87, 76, 92, 88}; // new ke saath values String[] names = new String[]{"Ram", "Shyam", "Geeta"};

Array Access

int[] arr = {10, 20, 30, 40, 50}; System.out.println(arr[0]); // 10 (first element) System.out.println(arr[4]); // 50 (last element) System.out.println(arr.length); // 5 (size)

Array Traverse

int[] arr = {10, 20, 30, 40, 50}; // for loop for (int i = 0; i < arr.length; i++) { System.out.print(arr[i] + " "); } // enhanced for loop for (int num : arr) { System.out.print(num + " "); }

Default Values

Type	Default
int, short, byte, long	0
float, double	0.0
boolean	false
char	'\u0000'
Object	null

Exam Focus

Revise definitions, diagrams, examples, and short-answer points for Arrays in Java.

Interview Use

Prepare one clear explanation, one practical example, and one common mistake for this Java topic.

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FundamentalsMulti-Dimensional Arraystitle: Multi Dimensional Array FundamentalsArray Operationstitle: Array Operations FundamentalsArray Practice Programstitle: Array Programs FundamentalsJagged Arraytitle: Jagged Array in Java FundamentalsOne Dimensional Arraytitle: One Dimensional Array FundamentalsJava Compilation Processtitle: Java Compilation Process

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