JOptionPane отображает проблемы HTML в Java
Итак, у меня есть этот код, он запрашивает у пользователя месяц и год и печатает календарь на этот месяц. У меня, однако, есть некоторые проблемы.
the HTML font editing only affects the month. the days of the week are not aligned in columns correctly.Спасибо!
package calendar_program;
import javax.swing.JOptionPane;
public class Calendar {
public static void main(String[] args) {
StringBuilder result=new StringBuilder();
// read input from user
int year=getYear();
int month=getMonth();
String[] allMonths={
"", "January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December"
};
int[] numOfDays= {0,31,28,31,30,31,30,31,31,30,31,30,31};
if (month == 2 && isLeapYear(year)) numOfDays[month]=29;
result.append(" "+allMonths[month]+ " "+ year+"\n"+" S M Tu W Th F S"+"\n");
int d= getstartday(month, 1, year);
for (int i=0; i<d; i++){
result.append(" ");
// prints spaces until the start day
}
for (int i=1; i<=numOfDays[month];i++){
String daysSpace=String.format("%4d", i);
result.append(daysSpace);
if (((i+d) % 7==0) || (i==numOfDays[month])) result.append("\n");
}
//format the final result string
String finalresult= "<html><font face='Arial'>"+result;
JOptionPane.showMessageDialog(null, finalresult);
}
//prompts the user for a year
public static int getYear(){
int year=0;
int option=0;
while(option==JOptionPane.YES_OPTION){
//Read the next data String data
String aString = JOptionPane.showInputDialog("Enter the year (YYYY) :");
year=Integer.parseInt(aString);
option=JOptionPane.NO_OPTION;
}
return year;
}
//prompts the user for a month
public static int getMonth(){
int month=0;
int option=0;
while(option==JOptionPane.YES_OPTION){
//Read the next data String data
String aString = JOptionPane.showInputDialog("Enter the month (MM) :");
month=Integer.parseInt(aString);
option=JOptionPane.NO_OPTION;
}
return month;
}
//This is an equation I found that gives you the start day of each month
public static int getstartday(int m, int d, int y){
int year = y - (14 - m) / 12;
int x = year + year/4 - year/100 + year/400;
int month = m + 12 * ( (14 - m) / 12 ) - 2;
int num = ( d + x + (31*month)/12) % 7;
return num;
}
//sees if the year entered is a leap year, false if not, true if yes
public static boolean isLeapYear (int year){
if ((year % 4 == 0) && (year % 100 != 0)) return true;
if (year % 400 == 0) return true;
return false;
}
}