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import java.util.*;

class Calculator {
    public static int add(int a, int b) {
        return a + b;
    }
    public static int multiply(int a, int b) {
        return a * b;
    }
    public static int subtract(int a, int b) {
…                String a = "asdadasfs fsd fsdf sdfs AD WF SDA AA";
                a.countWords();
                a.countVowels();
                a.reverseText();
                a.findLongestWord();
                   }     

        }