日历显示读出输入的年月的java代码

import java.awt.*;
import java.awt.event.*;
import java.util.calendar;

import javax.swing.joptionpane;

class calendarbean {  //定义一个日历类
 string day[]; //天数数组
 int year = 2011, month = 9; //给定一个初始年月

 public void setyear(int year) {
  this.year = year;
 }

 public int getyear() {
  return year;
 }

 public void setmonth(int month) {
  this.month = month;
 }

 public int getmonth() {
  return month;
 }

 public string[] getcalendar() { //获得日历
  string a[] = new string[42]; //定义一个以字符串数组
  calendar 日历 = calendar.getinstance();
  日历.set(year, month - 1, 1);
  int 星期几 = 日历.get(calendar.day_of_week) - 1;
  int day = 0;
  if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {
   day = 31;
  }
  if (month == 4 || month == 6 || month == 9 || month == 11) {
   day = 30;
  }
  if (month == 2) {
   if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)) {
    day = 29;
   } else {
    day = 28;
   }
  }
  for (int i = 星期几, n = 1; i < 星期几 + day; i++) {
   a[i] = string.valueof(n);
   n++;
  }
  return a;
 }
}

class calendarframe extends frame implements actionlistener {
 label labelday[] = new label[42]; //用来输出日历的天的数组
 button titlename[] = new button[7]; //周一到周天的按键
 string name[] = { "日", "一", "二", "三", "四", "五", "六" };
 textfield text1, text2; //定义输入的年份和月份
 button nextmonth, previousmonth, enter; //下个月，上个月，确定
 label lab1, lab2, lab3; //几个文本类型的字符串
 int year = 2012, month = 9;
 calendarbean calendar; //顶一个量
 label showmessage = new label("", label.center); //   定义一个用于显示 当前年月的label 表明，标签上应为中心。

 public calendarframe() {    //窗体类
  panel pcenter = new panel();  //镶嵌
  pcenter.setlayout(new gridlayout(7, 7));
  for (int i = 0; i < 7; i++) {      //给周日到周六的button添加显示文本
   titlename[i] = new button(name[i]);
   pcenter.add(titlename[i]);
  }
  for (int i = 0; i < 42; i++) {     
   labelday[i] = new label("", label.center);
   pcenter.add(labelday[i]);
  }
  calendar = new calendarbean();
  calendar.setyear(year);     //设定年
  calendar.setmonth(month);
  string day[] = calendar.getcalendar();  //设定天
  for (int i = 0; i < 42; i++) {     //给日历位置循环添加显示日历天
   labelday[i].settext(day[i]);
  }
  lab1 = new label("请输入日期");  //调用一个方法    new一个对象
  lab2 = new label("年份");
  lab3 = new label("月份");
  enter = new button("确定");
  text1 = new textfield(10);
  text2 = new textfield(5);
  nextmonth = new button("下月");
  previousmonth = new button("上月");
  enter.addactionlistener(this);  //添加指定的动作侦听器
  nextmonth.addactionlistener(this);
  previousmonth.addactionlistener(this);
  panel pnorth = new panel(), psouth = new panel();
  pnorth.add(lab1);
  pnorth.add(lab2);
  pnorth.add(text1);
  pnorth.add(lab3);
  pnorth.add(text2);
  pnorth.add(enter);
  pnorth.add(previousmonth);
  pnorth.add(nextmonth);
  psouth.add(showmessage);
  showmessage.settext("日历：" + calendar.getyear() + "年" + calendar.getmonth() + "月");
  scrollpane scrollpane = new scrollpane();  //实现单个子组件的自动水平和/或垂直滚动的容器类
  scrollpane.add(pcenter);
  add(scrollpane, borderlayout.center);
  add(pnorth, borderlayout.north);
  add(psouth, borderlayout.south);
 }

 public void actionperformed(actionevent e) {
  if (e.getsource() == nextmonth) { //如果获得的操作时下个月的
   month = month + 1;
   if (month > 12)
    month = 1;
   calendar.setmonth(month);
   string day[] = calendar.getcalendar();
   for (int i = 0; i < 42; i++) {
    labelday[i].settext(day[i]);
   }
  } else if (e.getsource() == previousmonth) {
   month = month - 1;
   if (month < 1)
    month = 12;
   calendar.setmonth(month);
   string day[] = calendar.getcalendar();
   for (int i = 0; i < 42; i++) {
    labelday[i].settext(day[i]);
   }
  } else {
   string yea = text1.gettext();
   string mon = text2.gettext();
   try {
    year = integer.parseint(yea); //把string转成int类型
    month = integer.parseint(mon);
    if (month > 12 || month < 1 || year < 1) {  //错误输入的处理
     joptionpane.showmessagedialog(null, "请输入正确月份或月份");
     return;
    } else {
     calendar.setyear(year);
     calendar.setmonth(month);
    }
    string day[] = calendar.getcalendar();
    for (int i = 0; i < 42; i++) {
     labelday[i].settext(day[i]);
    }
   } catch (numberformatexception ee) {
    joptionpane.showmessagedialog(null, "请输入正确的年份及月份");
   }
  }
  showmessage.settext("日历：" + calendar.getyear() + "年" + calendar.getmonth() + "月");
 }

}

public class calendarmainclass {
 public static void main(string args[]) {
  calendarframe frame = new calendarframe();
  frame.settitle("日历");
  frame.setbounds(300, 200, 500, 300);
  frame.setvisible(true);  //显示窗口
  frame.validate(); //使生效
  frame.addwindowlistener(new java.awt.event.windowadapter() {  //点击叉号关闭frame程序
   public void windowclosing(java.awt.event.windowevent e) {
    system.exit(0);
   }
  });
 }
}