摘要:
List<User> lists = new ArrayList<>(); for (int i = 0; i < 40000; i++) { if (i%2 == 0){ lists.add(new User("aa1",1)); }else { lists.add(new User("aa2", 阅读全文
摘要:
long startTime = System.currentTimeMillis(); //获取开始时间doing //你的执行代码long endTime = System.currentTimeMillis(); //获取结束时间System.out.println("程序运行时间:" + ( 阅读全文