Replace Character in a String in Java without using replace() method

To replace a character in a String, without using the replace() method, try the below logic.

Let’s say the following is our string.

String str = "The Haunting of Hill House!";

To replace character at a position with another character, use the substring() method login. Here, we are replacing 7th position with character ‘p’

int pos = 7;
char rep = 'p';
String res = str.substring(0, pos) + rep + str.substring(pos + 1);

The following is the complete example wherein a character at position 7 is replaced.

Example

 Live Demo

public class Demo {
    public static void main(String[] args) {
       String str = "The Haunting of Hill House!";
       System.out.println("String: "+str);
       // replacing character at position 7
       int pos = 7;
       char rep = 'p';
       String res = str.substring(0, pos) + rep + str.substring(pos + 1);
       System.out.println("String after replacing a character: "+res);
    }
}

Output

String: The Haunting of Hill House!
String after replacing a character: The Haupting of Hill House!

Samual Sam

Published on 12-Dec-2018 07:28:55

• Related Questions & Answers
• Java String replace() method example.
• Replace a string using StringBuilder
• How to use Java string replace method?
• Replace first occurrence of a character in Java
• Java Program to replace all occurrences of a given character in a string
• Replace String with another in java.
• C# Program to replace a special character from a String
• Does JavaScript have a method to replace part of a string without creating a new string?
• String function to replace nth occurrence of a character in a string JavaScript
• Java Program to Replace the Spaces of a String with a Specific Character
• How to replace Digits into String using Java?
• C program to replace all occurrence of a character in a string
• Java Program to Replace a Character at a Specific Index
• How to replace a character in Objective-C String for iPhone SDK?
• How to replace a character in a MySQL table?