Генератор слов)

public class Solution {
    public static void main(String[] args) {
        String[] wordListOne = {"Мама"};
        String[] wordListTwo = {"Мыла"};
        String[] wordListThree = {"Раму"};

        int oneLength = wordListOne.lenght;
        int twoLength = wordListTwo.lenght;
        int threeLength = wordListThree.lenght;

        int rand1 = (int) (Math.random() * oneLength);
        int rand2 = (int) (Math.random() * twoLength);
        int rand3 = (int) (Math.random() * threeLength);

        String phrase = wordListOne[rand1]+wordListTwo[rand2]+wordListThree[rand3];

        System.out.println(phrase);
    }
}

String[] wordList = {"Мама","Мыла","Раму"};
int oneLength = wordList.lenght;
int rand1 = (int) (Math.random() * oneLength);
int rand2 = (int) (Math.random() * oneLength);
int rand3 = (int) (Math.random() * oneLength);
String phrase = wordList[rand1]+wordList[rand2]+wordList[rand3];
System.out.println(phrase);