effective-Java/ch05泛型/Generics/src/main/java/com/jueee/item32/Item32Example04.java

package com.jueee.item32;

import java.util.List;
import java.util.concurrent.ThreadLocalRandom;

public class Item32Example04 {

    static <T> List<T> pickTwo(T a, T b, T c) {
        switch(ThreadLocalRandom.current().nextInt(3)) {
          case 0: return List.of(a, b);
          case 1: return List.of(a, c);
          case 2: return List.of(b, c);
        }
        throw new AssertionError();
    }

    
    public static void main(String[] args) {
        List<String> attributes = pickTwo("Good", "Fast", "Cheap");
        System.out.println(attributes);
    }

}