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Jun 26, 2024 · Reverse a string in Java - GeeksforGeeks. Last Updated : 26 Jun, 2024. This article discusses different ways to reverse a string in Java with examples. Examples: Prerequisite: String vs StringBuilder vs StringBuffer in Java. Following are some interesting facts about String and StringBuilder classes : Objects of String are immutable.
You can easily reverse a string by characters with the following example: Example. String originalStr = "Hello"; String reversedStr = ""; for (int i = 0; i < originalStr.length(); i++) { . reversedStr = originalStr.charAt(i) + reversedStr; } System.out.println("Reversed string: "+ reversedStr); Try it Yourself » Related Pages.
There are many ways to reverse String in Java. We can reverse String using StringBuffer, StringBuilder, iteration etc. Let's see the ways to reverse String in Java. 1) By StringBuilder / StringBuffer. File: StringFormatter.java. public class StringFormatter { public static String reverseString (String str) {
Sep 10, 2017 · public static String reverse(String input){ char[] in = input.toCharArray(); int begin=0; int end=in.length-1; char temp; while(end>begin){ temp = in[begin]; in[begin]=in[end]; in[end] = temp; end--; begin++; } return new String(in); }
Jun 5, 2024 · Java Code Reverse A String – Using Array 1) We are using a character array to reverse the given string. 2) Read the entered string using scanner object scan.nextLine() and store it in the variable str.
Jan 8, 2024 · In this quick tutorial, we’re going to see how we can reverse a String in Java. We’ll start to do this processing using plain Java solutions. Next, we’ll have a look at the options that third-party libraries like Apache Commons provide. Furthermore, we’ll demonstrate how to reverse the order of words in a sentence. 2. A Traditional for Loop
Apr 1, 2024 · We can use the StringBuilder.reverse() method to reverse a Java string efficiently. Alternatively, we can also use the StringBuffer.reverse() method. Using StringBuilder is suggested as it’s not synchronized and faster than StringBuffer. Download Run Code. Output: The reverse of the given string is: thgileD eihceT. 2. Using Stack.
Nov 11, 2023 · In this tutorial, we covered four different methods to reverse a string in java, including charAt(), getBytes(), toCharArray() and reverse() method. We first, learned the basic syntax of these methods and then solved various examples of reversing strings. In a nutshell, this tutorial contains the popular and simple ways to reverse a string in java.
Nov 29, 2022 · In this tutorial, we will present a comprehensive guide on how to reverse a string in Java. Firstly, we will introduce the Java string data type along with its features and properties. Then, we will show nine different methods with simple, yet efficient code examples that you can use to write a program to reverse a string in Java.
Jun 4, 2020 · In this article, we will show you a few ways to reverse a String in Java. StringBuilder(str).reverse() char[] looping and value swapping. byte looping and value swapping. Apache commons-lang3. For development, always picks the standard StringBuilder(str).reverse() API.
