Working with Strings in Java

Introduction to Strings

In Java, strings are used to represent text and are one of the most commonly used data types. Java provides a rich
set of built-in features to work with strings. This guide will cover how to create, manipulate, and use strings in
your Java programs.

Creating Strings

You can create strings in Java by either using double quotes or by creating an instance of the String class. Here are examples of both methods:

String text1 = "Hello, World!";
String text2 = new String("Java is fun!");

String Concatenation

String concatenation is the process of combining two or more strings. You can use the + operator or
the concat method for this purpose. Here's an example:

String firstName = "John";
String lastName = "Doe";
String fullName = firstName + " " + lastName;

String Methods

Java provides a wide range of methods for working with strings, such as length, charAt,
substring, toUpperCase, and many more. Here's an example of using the length and substring methods:

String text = "Java Programming";
int length = text.length(); // Gets the length of the string
String subtext = text.substring(0, 4); // Extracts "Java" from the string

String Comparison

To compare strings in Java, you can use the equals method. Here's an example:

String str1 = "Hello";
String str2 = "World";
boolean areEqual = str1.equals(str2); // Checks if str1 is equal to str2


Working with strings is an integral part of Java programming. You've learned how to create, concatenate, and manipulate
strings in this guide. As you continue to develop Java applications, your ability to work with strings will be
essential for text processing and manipulation.