摘要： 情景：只有一个皇帝（Emperor），三个臣子（Minister）向一个皇帝汇报。public class Emperor { private static final Emperor emperor = new Emperor(); private Emperor() { } public static Emperor getInstance() { return emperor; } public static void say() { System.out.print... 阅读全文

摘要： 实体类：public class MyEntry { public String title; public String location; public String description; public Calendar startCalendar; public Calendar endCalendar; public String entryID; public MyEntry(String entryID, String title, String location, String description, Calendar st... 阅读全文