JAVA Foundation Course | Chapter 6: Arrays and Strings in Java by Prakhar Chauhan | Learn Smarter
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Chapter 6: Arrays and Strings in Java

The chapter discusses arrays and strings in Java, detailing how they function as fundamental data structures. Arrays allow storage of fixed-size, similar data types and are indexed starting from 0, while strings represent sequences of characters and provide various built-in methods. It emphasizes the need for loops to traverse arrays and the immutability of strings in Java.

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Sections

  • 6

    Arrays And Strings In Java

    This section introduces arrays and strings in Java, highlighting their structures and basic operations.

    Learning Practice

  • 6.1

    Introduction

    This section introduces arrays and strings as fundamental data structures in Java, highlighting their significance and basic features.

    Learning Practice

  • 6.2

    What Is An Array?

    An array is a fixed-size collection that holds a number of elements of the same type and allows for indexed access.

    Learning Practice

  • 6.3

    Declaring And Initializing Arrays

    This section covers how to declare and initialize arrays in Java, including syntax and examples.

    Learning Practice

  • 6.4

    Accessing Array Elements

    This section explains how to access elements in an array in Java using indexing.

    Learning Practice

  • 6.5

    Traversing An Array

    This section explains how to traverse arrays in Java using loops, specifically the for loop and the for-each loop.

    Learning Practice

  • 6.6

    Array Example – Sum Of Elements

    This section discusses a Java example on how to calculate the sum of elements in an array.

    Learning Practice

  • 6.7

    Types Of Arrays

    This section covers the different types of arrays in Java, specifically one-dimensional and two-dimensional arrays.

    Learning Practice

  • 6.8

    2d Array Example: Matrix Print

    This section introduces the concept of 2D arrays in Java and demonstrates how to print a matrix using nested loops.

    Learning Practice

  • 6.9

    Array Limitations

    This section outlines the primary limitations of arrays in Java, such as fixed size and type constraints.

    Learning Practice

  • 6.10

    What Is A String?

    A String in Java is a sequence of characters enclosed in double quotes and treated as an object.

    Learning Practice

  • 6.11

    Declaring And Creating Strings

    This section covers how to declare and create Strings in Java, emphasizing the differences between using String literals and the new keyword.

    Learning Practice

  • 6.12

    String Methods

    This section covers various methods available for manipulating strings in Java, highlighting their functionality and usage.

    Learning Practice

  • 6.13

    String Example: Basic Operations

    Learning Practice

  • 6.14

    Looping Through A String

    This section explains how to loop through a string in Java using a for loop to access each character.

    Learning Practice

  • 6.15

    String Comparison

    The String Comparison section covers how strings can be compared for equality in Java using methods like equals() and equalsIgnoreCase().

    Learning Practice

  • 6.16

    String Concatenation

    String concatenation combines multiple strings into one, with Java using the + operator.

    Learning Practice

  • 6.17

    Real-World Examples

    This section highlights how arrays and strings can be used in practical applications.

    Learning Practice

  • 6.18

    Chapter Summary

    The chapter focuses on the basics of Arrays and Strings in Java, covering key concepts related to fixed-size collections and character sequences.

    Learning Practice

References

Untitled document (19).pdf

Class Notes

Memorization

What we have learnt

  • Arrays store fixed-size, sa...
  • Arrays are accessed by inde...
  • Use loops to traverse arrays.

Revision Tests