?? ex040203.java
字號:
class MyDate{
public MyDate(MyDate date){
year = date.year;
month = date.month;
day = date.day;
}
public MyDate(int y, int m, int d){
if (m<1 || m>12){
System.out.println("月應該在1~12之間");
System.exit(1);
}
if (d<1){
System.out.println("日期格式不對");
System.exit(1);
}
switch(m){
case 4 :
case 6 :
case 9 :
case 11:
if (d>30){
System.out.println("日期格式不對");
System.exit(1);
}
break;
case 2 :
boolean leap=false;
if ( y % 4 != 0 )
leap = false;
else if ( y % 100 != 0 )
leap = true;
else if ( y % 400 != 0 )
leap = false;
else
leap = true;
if (!leap){
if (d>28){
System.out.println("日期格式不對");
System.exit(1);
}
}
else {
if (d>29){
System.out.println("日期格式不對");
System.exit(1);
}
}
break;
default:
if (d>31){
System.out.println("日期格式不對");
System.exit(1);
}
}
year=y;
month=m;
day=d;
}
public boolean equal(MyDate date){
if (year == date.year &&
month == date.month &&
day == date.day)
return true;
else
return false;
}
public void incrementDay(){
day++;
switch(day){
case 32:
month++;
day=1;
break;
case 31:
if (month == 4 || month == 6 ||
month == 9 || month == 11 )
{
month++;
day=1;
}
break;
case 30:
if (isLeapYear())
{
month++;
day=1;
}
break;
case 29:
if (!isLeapYear())
{
month++;
day=1;
}
break;
}
if (month==13)
{
year++;
month=1;
}
}
public int getYear(){
return year;
}
public int getMonth(){
return month;
}
public int getDay(){
return day;
}
public boolean isLeapYear(){
boolean leap=false;
if ( year % 4 != 0 )
leap = false;
else if ( year % 100 != 0 )
leap = true;
else if ( year % 400 != 0 )
leap = false;
else
leap = true;
return leap;
}
public String toString(){
return (""+year +"-"+month+"-"+day);
}
private int year;
private int month;
private int day;
}
public class Ex040203{
public static void main(String[] args){
MyDate date1 = new MyDate(2004,2,29);
MyDate date2 = new MyDate(date1);
System.out.println(date1);
date2.incrementDay();
System.out.println(date2.toString());
MyDate date3 = new MyDate(date1);
if (date1.equal(date3))
System.out.println("true");
else
System.out.println("false");
}
}
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