Delete char at position in string

Question

Currently, I am working on a project that requires to delete a char at a set position in a string. Is there a simple way to do this?

Answer 1

Use a StringBuilder, which has the method deleteCharAt(). Then, you can just use stringBuilder.toString() to get your string.

EDIT, here's an example:

public static void main(String[] args) {
    String string = "bla*h";
    StringBuilder sb = new StringBuilder(string);
    sb.deleteCharAt(3);
    // Prints out "blah"
    System.out.println(sb.toString());
}

Answer 2

Strings are immutable ! But to accomplish your task, you can

1. Copy the substring from the start of the string to the character that has to be deleted
2. Copy the substring from the character that has to be deleted to the end of the String.
3. Append the second String to the first one.

For example, let's say you have to remove the third character:

String input = "Hello, World";
String first = input.substring(0, 3);
String second = input.substring(4);
String result = first + second;