Java How To Reverse a String

Reverse a String

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);

Explanation: We start with an empty string reversedStr.

• On each loop, we take one character from the original string using charAt().
• Instead of adding it to the end, we place it in front of the existing reversedStr.
• This way, the characters are built in reverse order.

For example, from "Hello" we get "olleH".

Related Pages

Java String Tutorial

Java String Methods