问一道关于怎样在消息对框中输出结果的问题
修改下面代码，定义一个静态变量的String型变量output，用以储存书输出结果，并且在消息对话框中实现，我想问 的就是怎样在消息对话框中实现它，求大神指教，有点急import java.util.Scanner;
//import javax.swing.*;
public class PrintCalendar {
public static void main(String[] args){
Scanner input = new Scanner(System.in);
// Calender calender = new Calender();
//String output =" ";
System.out.print("Enter full year (e.g.,2001): ");
int year = input.nextInt();
System.out.print("Enter month in number between 1 and 12: ");
int month = input.nextInt();
printMonth(year,month);
}
public static void printMonth(int year,int month){
printMonthTitle(year,month);
printMonthBody(year,month);
}
public static void printMonthTitle(int year,int month){
System.out.println(" "+getMonthName(month)+" "+year);
System.out.println("---------------------------");
System.out.println("Sun Mon Tue Wed Thu Fri Set");
}
public static String getMonthName(int month){
String monthName = " ";
switch(month){
case(1):monthName = "January";break;
case(2):monthName = "February";break;
case(3):monthName = "Match";break;
case(4):monthName = "April";break;
case(5):monthName = "May";break;
case(6):monthName = "June";break;
case(7):monthName = "July";break;
case(8):monthName = "August";break;
case(9):monthName = "September";break;
case(10):monthName = "October";break;
case(11):monthName = "November";break;
case(12):monthName = "December";break;
}
return monthName;
}
public static void printMonthBody(int year,int month){
int startDay = getStartDay(year,month);
int numberOfDaysInMonth = getNumberOfDaysInMonth(year,month);
int i=0;
for(i=0;i<startDay;i++)
System.out.print(" ");
for(i=1;i<=numberOfDaysInMonth;i++){
System.out.printf("%4d",i);
if ((i+startDay)%7==0)
System.out.println();
}
System.out.println();
}
public static int getStartDay(int year,int month){
final int START_DAY_FOR_JAN_1_1800 = 3;
int totalNumberOfDays = getTotalNumberOfDays(year,month);
return (totalNumberOfDays+START_DAY_FOR_JAN_1_1800)%7;
}
public static int getTotalNumberOfDays(int year,int month){
int total = 0;
for (int i= 1800;i<year;i++)
if(isLeapYear(i))
total +=366;
else
total+=365;
for(int i=1;i<month;i++)
total=total+getNumberOfDaysInMonth(year,i);
return total;
}
public static int getNumberOfDaysInMonth(int year,int month){
if(month==1||month==3||month==5||month==7||month==8||month==10||month==12)
return 31;
if(month==4||month==6||month==9||month==11)
return 30;
if(month==2)
return isLeapYear(year)?29:28;
return 0;
}
public static boolean isLeapYear(int year){
return (year %400==0||(year%4==0 && year%100!=0));
}
}
