how to print the first and last letter of a string in java with substirng code example

Example 1: java get first char

char fourth = "Banana".charAt(3);

Example 2: last char in string java

public class Test {
    public static void main(String args[]) {
        String string = args[0];
        System.out.println("last character: " +
                           string.substring(string.length() - 1)); 
    }
}