/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.mycompany.ex23; import java.util.Collection; import java.util.Map; public class Main2 { // public static void main(String[] args) { String s = null; // 1) Collection Collection<String> l = null; // Collection<int> li = null; // int Integer // double Double // long Long // boolean Boolean // char Character Collection<Integer> li = null; // Map<String, String> map1; Map<Integer, String> map2; } }