Some samples for testing instance methods: $-$ The String class has an instance method toUppercase$()$ that returns a copy of the String with all characters converted to upper$-$case. Test that it works correctly on the string "bANana!". $-$ The String class has an instance method length$()$ that returns the length of a String. Test that it works correctly on a string of length $3.-$ The String class has an instance method boolean equalsIgnoreCase$($String s$)$ that compares a String to another, returning true iff they are identical $($ignoring case$).$ Test this method comparing the strings "bANana!" and "Banana!". To better implement the above recall that if s is a String then s$.$length$()$ is the length of s$.$ This is also true for constant strings. So "Banana".length$()$ would return $6.$