今天給大家介紹一下如何用Java swing開發一款簡單的小日歷,下面我們來看代碼:
首先創建一個CalendarBean類,用于基本的日期計算:
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package other1; import java.util.Calendar; public class CalendarBean { String day[]; int year= 2005 ,month= 0 ; 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() { String a[]= new String[ 42 ]; Calendar date=Calendar.getInstance(); date.set(year,month- 1 , 1 ); int week=date.get(Calendar.DAY_OF_WEEK)- 1 ; int day= 0 ; //判斷大月份 if (month== 1 ||month== 3 ||month== 5 ||month== 7 ||month== 8 ||month== 10 ||month== 12 ) { day= 31 ; } //判斷小月 if (month== 4 ||month== 6 ||month== 9 ||month== 11 ) { day= 30 ; } //判斷平年與閏年 if (month== 2 ) { if (((year% 4 == 0 )&&(year% 100 != 0 ))||(year% 400 == 0 )) { day= 29 ; } else { day= 28 ; } } for ( int i=week,n= 1 ;i<week+day;i++) { a[i]=String.valueOf(n) ; n++; } return a; } } |
然后再創建一個主界面類,用于界面的實現:
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package other1; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class CalendarFrame extends JFrame implements ActionListener { JLabel labelDay[]= new JLabel[ 42 ]; JTextField text= new JTextField( 10 ); JButton titleName[]= new JButton[ 7 ]; JButton button = new JButton(); String name[]={ "日" , "一" , "二" , "三" , "四" , "五" , "六" }; JButton nextMonth,previousMonth; int year= 1996 ,month= 1 ; //啟動程序顯示的日期信息 CalendarBean calendar; JLabel showMessage= new JLabel( "" ,JLabel.CENTER); JLabel lbl1 = new JLabel( "請輸入年份:" ); JLabel lbl2= new JLabel( " " ); public CalendarFrame() { setBackground( new Color( 0 , 128 , 128 )); JPanel pCenter= new JPanel(); pCenter.setBackground( new Color( 0 , 139 , 139 )); //將pCenter的布局設置為7行7列的GridLayout 布局。 pCenter.setLayout( new GridLayout( 7 , 7 )); //pCenter添加組件titleName[i] for ( int i= 0 ;i< 7 ;i++) { titleName[i]= new JButton(name[i]); pCenter.add(titleName[i]); } //pCenter添加組件labelDay[i] for ( int i= 0 ;i< 42 ;i++) { labelDay[i]= new JLabel( "" ,JLabel.CENTER); pCenter.add(labelDay[i]); } text.addActionListener( this ); calendar= new CalendarBean(); calendar.setYear(year); calendar.setMonth(month); String day[]=calendar.getCalendar(); for ( int i= 0 ;i< 42 ;i++) { labelDay[i].setText(day[i]); } nextMonth= new JButton( "下月" ); previousMonth= new JButton( "上月" ); button= new JButton( "確定" ); //注冊監聽器 nextMonth.addActionListener( this ); previousMonth.addActionListener( this ); button.addActionListener( this ); JPanel pNorth= new JPanel(), pSouth= new JPanel(); pNorth.add(showMessage); pNorth.add(lbl2); pNorth.add(previousMonth); pNorth.add(nextMonth); pSouth.add(lbl1); pSouth.add(text); pSouth.add(button); showMessage.setText( "日歷:" +calendar.getYear()+ "年" + calendar.getMonth()+ "月" ); ScrollPane scrollPane= new ScrollPane(); scrollPane.add(pCenter); getContentPane().add(scrollPane,BorderLayout.CENTER); // 窗口添加scrollPane在中心區域 getContentPane().add(pNorth,BorderLayout.NORTH); // 窗口添加pNorth 在北面區域 getContentPane().add(pSouth,BorderLayout.SOUTH); // 窗口添加pSouth 在南區域。 } public void actionPerformed(ActionEvent e) { if (e.getSource()==nextMonth) { 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 if (e.getSource()==button) { month=month+ 1 ; if (month> 12 ) month= 1 ; calendar.setYear(Integer.parseInt(text.getText())); String day[]=calendar.getCalendar(); for ( int i= 0 ;i< 42 ;i++) { labelDay[i].setText(day[i]); } } showMessage.setText( "日歷:" +calendar.getYear()+ "年" +calendar.getMonth()+ "月" ); } } |
最后用一個類調用即可:
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package other1; import javax.swing.JFrame; import javax.swing.UIManager; public class CalendarMainClass { public static void main(String args[]) { try { UIManager.setLookAndFeel( "com.sun.java.swing.plaf.windows.WindowsLookAndFeel" ); //windows界面風格 } catch (Exception e) { e.printStackTrace(); } CalendarFrame frame= new CalendarFrame(); frame.setBounds( 100 , 100 , 360 , 300 ); frame.setTitle( "日歷小程序" ); frame.setLocationRelativeTo( null ); //窗體居中顯示 frame.setVisible( true ); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } } |
運行結果如下:
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持服務器之家。
原文鏈接:http://blog.csdn.net/llqqxf/article/details/51910139