Java String Exercises: Create a new string from a given string swapping the last two characters of the given string

Java String: Exercise-57 with Solution

Write a Java program to create a new string from a given string swapping the last two characters of the given string. The length of the given string must be two or more.

Sample Solution:

Java Code:

import java.util.*;
public class Main
{
public String lastTwo(String str)
{
if (str.length() < 2) return str;
return str.substring(0, str.length()-2)+ str.charAt(str.length()-1) + str.charAt(str.length()-2);
}
    public static void main (String[] args)
    {
      Main m= new Main();
      String str1 =  "string";
      System.out.println("The given strings is: "+str1);
      System.out.println("The string after swap last two characters are: "+m.lastTwo(str1));
    }
}	

Sample Output:

The given strings is: string
The string after swap last two characters are: strign

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