javaapplet

import java.util.*; import javax.swing.*; import java.awt.*; import java.awt.event.*; public class ex13_6 extends JApplet implements ActionListener { JTable table; Object a[][]= new Object[6][7]; Object name[]={"星期日","星期一","星期二","星期三","星期四","星期五","星期六"}; JButton nextMonth,previousMonth; int year=2008,month=1; CalendarBean calendar; JLabel showMessage=new JLabel("",JLabel.CENTER); public void init() { calendar=new CalendarBean(); String s=getParameter("year"); try { year = Integer.parseInt(s); } catch(Exception ee){year=2008;} calendar.setYear(year); calendar.setMonth(month); String day[]=calendar.getCalendar(); table = new JTable(a,name); table.setRowSelectionAllowed(false); setTable(day); nextMonth = new JButton("下月"); previousMonth = new JButton("上月"); nextMonth.addActionListener(this); previousMonth.addActionListener(this); JPanel pNorth = new JPanel(), pSouth = new JPanel(); pNorth.add(previousMonth); pNorth.add(nextMonth); pSouth.add(showMessage); showMessage.setText("日历："+calendar.getYear()+"年"+calendar.getMonth()+"月"); Container con = getContentPane(); con.add(new JScrollPane(table),BorderLayout.CENTER); con.add(pNorth,BorderLayout.NORTH); con.add(pSouth,BorderLayout.SOUTH); con.validate(); } public void actionPerformed(ActionEvent e) { if(e.getSource()==nextMonth) { month=month+1; if(month>12) month=1; calendar.setMonth(month); String day[] = calendar.getCalendar(); setTable(day); table.repaint(); } else if(e.getSource()==previousMonth) { month=month-1; if(month<1) month=12; calendar.setMonth(month); String day[]=calendar.getCalendar(); setTable(day); table.repaint(); } } public void setTable(String day[]) { int n=0; for(int i=0;i<6;i++) for(int j=0;j<7;j++) { a[i][j]=day[n]; n++; } } } class CalendarBean { String day[]; int year=2005,month=0; public void setYear(int year) { this.year=year; } public void setMonth(int month) { this.month=month; } public int getYear( ) { return year; } public int getMonth() { return month; } public String[] getCalendar() { String a[]=new String[42]; Calendar rili=Calendar.getInstance(); rili.set(year, month,1); int xingqiji=rili.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; else day=30; for(int i=xingqiji,n=1;i<xingqiji+day;i++) { a[i]=String.valueOf(n); n++; } return a; } }