Get the last three chars from any string - Java

Question

I\'m trying to take the last three chracters of any string and save it as another String variable. I\'m having some tough time with my thought process.

Strin         


        

Answer 1

Here is a method I use to get the last xx of a string:

public static String takeLast(String value, int count) {
    if (value == null || value.trim().length() == 0 || count < 1) {
        return "";
    }

    if (value.length() > count) {
        return value.substring(value.length() - count);
    } else {
        return value;
    }
}

Then use it like so:

String testStr = "this is a test string";
String last1 = takeLast(testStr, 1); //Output: g
String last4 = takeLast(testStr, 4); //Output: ring