Java: Display the middle character of a string

Java Method: Exercise-3 with Solution

Write a Java method to display the middle character of a string.

Note: a) If the length of the string is odd there will be two middle characters.
b) If the length of the string is even there will be one middle character.

Test Data:
Input a string: 350

Pictorial Presentation:

Sample Solution:

Java Code:

import java.util.Scanner;
public class Exercise3 {
  public static void main(String[] args)
    {
        Scanner in = new Scanner(System.in);
        System.out.print("Input a string: ");
        String str = in.nextLine();
        System.out.print("The middle character in the string: " + middle(str)+"\n");
    }
 public static String middle(String str)
    {
        int position;
        int length;
        if (str.length() % 2 == 0)
        {
            position = str.length() / 2 - 1;
            length = 2;
        }
        else
        {
            position = str.length() / 2;
            length = 1;
        }
        return str.substring(position, position + length);
    }
}

Sample Output:

Input a string: 350                                                                                           
The middle character in the string: 5

Flowchart:

Java Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a Java method to compute the average of three numbers.
Next: Write a Java method to count all vowels in a string.