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In Java, String is an immutable class used to store and manipulate text. It provides a wide range of built-in methods for searching, comparing, modifying, and transforming string data efficiently.
Example:
public class StringOps {public static void main(String[] args) {String str = "Hello, World!";// Length of stringSystem.out.println("Length: " + str.length());// Character at indexSystem.out.println("Char at 7: " + str.charAt(7));// SubstringSystem.out.println("Substring(7): " + str.substring(7));// ConcatenationSystem.out.println("Concat: " + str.concat(" Java"));// SearchSystem.out.println("Index of 'World': " + str.indexOf("World"));// ReplaceSystem.out.println("Replace l->x: " + str.replace('l', 'x'));// Case conversionSystem.out.println("Uppercase: " + str.toUpperCase());// Trim spacesString spaced = " Trim me ";System.out.println("Trimmed: '" + spaced.trim() + "'");// Check equality ignoring caseSystem.out.println("EqualsIgnoreCase: " + str.equalsIgnoreCase("hello, world!"));}}Copied!✕Copy Java String Methods - GeeksforGeeks
Oct 11, 2025 · In Java, a String represents a sequence of characters used for storing and manipulating text. It is immutable and provides many built-in methods for operations like concatenation, …
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In Java, a String represents a sequence of …
Java Strings
In Java, a String is the type of object that …
Java String Reference - W3Schools
40 rows · All String Methods The String class has a set of built-in methods that you can use on strings.
See all 40 rows on www.w3schools.comMETHOD DESCRIPTION RETURN TYPE charAt () Returns the character at the specified ... char codePointAt () Returns the Unicode of the character at ... int codePointBefore () Returns the Unicode of the character ... int codePointCount () Returns the number of Unicode values ... int
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5 days ago · In Java, a String is the type of object that can store a sequence of characters enclosed by double quotes and every character is stored in 16 bits, …
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