java课程设计程序设计报告万年历(2)

g.drawLine(i, TOP , i, TOP+ totalHeight); //绘制表格线

for (int i = 0, j = TOP ; i <= numRows; i++, j += CELLHEIGHT) {

g.drawLine(0, j, totalWidth, j); //绘制表格线

}

xNum = (getFirstDayOfMonth(searchYear, searchMonth) + 1) * CELLWIDTH -

java程序设计万年历

MARGIN;

yNum = TOP + MARGIN + fontAscent;

numDays = daysInMonth[searchMonth] + ((calendar.isLeapYear(searchYear) &&

(searchMonth == FEBRUARY)) ? 1 : 0);

for (int day = 1; day <= numDays; day++) {

dayStr = Integer.toString(day);

g.drawString(dayStr, xNum - fontMetric.stringWidth(dayStr), yNum);

//绘制

字符串

xNum += CELLWIDTH; if (xNum > totalWidth) {

}

}

xNum = CELLWIDTH - MARGIN; yNum += CELLHEIGHT;

}

public boolean action(Event e, Object o){

int searchYearInt; if (e.target==btUpdate){

searchMonth = monthChoice.getSelectedIndex(); //得到查询月份 searchYearInt = Integer.parseInt(tfYear.getText(), 10); //得到查询年份

java程序设计万年历

searchYear = searchYearInt;

}

repaint(); //重绘屏幕 return true;

} return false;

}

private int getNumberRows(int year, int month) { //得到行数量

int firstDay; int numCells;

if (year < 1582) { //年份小于1582年，则返回-1 }

return (-1);

if ((month < 0) || (month > 11)) { }

firstDay = getFirstDayOfMonth(year, month); //计算月份的第一天

return (-1);

if ((month == FEBRUARY) && (firstDay == 0) && !calendar.isLeapYear(year)) {

return 4;

java程序设计万年历

numCells = firstDay + daysInMonth[month];

if ((month == FEBRUARY) && (calendar.isLeapYear(year))) { }

return ((numCells <= 35) ? 5 : 6); //返回行数

numCells++;

}

private int getFirstDayOfMonth(int year, int month) { //得到每月的第一天

int firstDay; int i;

if (year < 1582) { //年份小于1582年,返回-1 }

if ((month < 0) || (month > 11)) { //月份数错误,返回-1 }

firstDay = getFirstDayOfYear(year); for (i = 0; i < month; i++) { }

firstDay += daysInMonth[i]; //计算每月的第一天

//得到每年的第一天

return (-1);

return (-1);

if ((month > FEBRUARY) && calendar.isLeapYear(year)) {

java程序设计万年历

}

}

return (firstDay % 7);

}

private int getFirstDayOfYear(int year){ //计算每年的第一天 }

int leapYears; int hundreds; int fourHundreds; int first;

if (year < 1582) { //如果年份小于1582年 }

leapYears = (year - 1581) / 4; hundreds = (year - 1501) / 100; leapYears -= hundreds;

fourHundreds = (year - 1201) / 400; leapYears += fourHundreds;

first=5 + (year - 1582) + leapYears % 7; //得到每年第一天 return first;

return (-1); //返回-1

java程序设计万年历

4 测试与运行

图2在年份输入框内输入2013后点击更新后的情况

图3 月份下拉列表框

图4选择月份后的情况

java程序设计万年历

图5点击更新按钮后显示的结果