StringBuffer reverse() Method in Java with Examples Last Updated : 04 Aug, 2022 Comments Improve Suggest changes Like Article Like Report The Java.lang.StringBuffer.reverse() is an inbuilt method that is used to reverse the characters in the StringBuffer. The method causes this character sequence to be replaced by the reverse of the sequence. Syntax: public StringBuffer reverse() Parameters: NA Return Value: The method returns the StringBuffer after reversing the characters. Examples: Input: StringBuffer = GeeksforGeeks! Output = !skeegrofskeeG Input: StringBuffer = Hello World! Output = !dlroW olleH Below are programs that illustrate the java.lang.StringBuffer.reverse() method: Program 1: java // Java program to illustrate the // java.lang.StringBuffer.reverse() import java.lang.*; public class Test { public static void main(String args[]) { StringBuffer sbf = new StringBuffer("Geeksforgeeks!"); System.out.println("String buffer = " + sbf); // Here it reverses the string buffer sbf.reverse(); System.out.println("String buffer after reversing = " + sbf); } } Output: String buffer = Geeksforgeeks! String buffer after reversing = !skeegrofskeeG Program 2: java // Java program to illustrate the // java.lang.StringBuffer.reverse() import java.lang.*; public class Test { public static void main(String args[]) { StringBuffer sbf = new StringBuffer("1 2 3 4 5 6 7 8 9 10"); System.out.println("String buffer = " + sbf); // Here it reverses the string buffer sbf.reverse(); System.out.println("String buffer after reversing = " + sbf); } } Output: String buffer = 1 2 3 4 5 6 7 8 9 10 String buffer after reversing = 01 9 8 7 6 5 4 3 2 1 Comment More infoAdvertise with us Next Article StringBuffer reverse() Method in Java with Examples ankita_chowrasia Follow Improve Article Tags : Java Java-Strings Java-lang package Java-Functions java-StringBuffer +1 More Practice Tags : JavaJava-Strings Similar Reads StringBuffer setCharAt() method in Java with Examples The setCharAt() method of StringBuffer class sets the character at the position index to character which is the value passed as parameter to method. 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