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這期內容當中小編將會給大家帶來有關使用Java JTable 實現日歷功能,文章內容豐富且以專業的角度為大家分析和敘述,閱讀完這篇文章希望大家可以有所收獲。
MyCalendar類:
得到用于顯示日期數組a[ ]
import java.util.Calendar; public class MyCalendar { String day[]; int year = 2020,month=0; public String[] getDay() { return day; } public void setDay(String[] day) { this.day = day; } public int getYear() { return year; } public void setYear(int year) { this.year = year; } public int getMonth() { return month; } public void setMonth(int month) { this.month = month; } private boolean isLeapYear() { if(this.year%4==0 && this.year%100!=0){ return true; }else if(this.year%400==0){ return true; }else return false; } //獲得顯示數組 public String[] getCalendar(){ Calendar calendar=Calendar.getInstance(); String a[]=new String[42]; calendar.set(year,month-1,1); int weekday=calendar.get(Calendar.DAY_OF_WEEK)-1; int day=0; int days = 31; if (this.month == 4 || this.month == 6 || this.month == 9 || this.month == 11) days = 30; if (this.month == 2 && isLeapYear()) days = 29; if (this.month == 2 && !isLeapYear()) days = 28; for(int i = weekday,n=1;i< weekday +days;i++){ a[i]=String.valueOf(n); n++; } return a; } }
MyFrame類:
創造顯示面板,主要用到JTable。
public class MyFrame extends JFrame implements ActionListener { //存儲數據 MyCalendar calendar = new MyCalendar(); JComboBox choiceYear,choiceMonth; JTable table = null; JPanel root = new JPanel(); JLabel lyear, lmonth; private Object[] name = {"日","一","二","三","四","五","六"}; private TableModel tableModel = new DefaultTableModel(name,6); // private static int row = 6; // private static int column = 7; public MyFrame(String title) { super(title); this.setContentPane(root); root.setLayout(new BorderLayout()); //年月選擇欄 choiceYear=new JComboBox(); choiceMonth=new JComboBox(); lyear=new JLabel("年"); lmonth=new JLabel("月 "); for(int i=1990;i<2050;i++) choiceYear.addItem(i); choiceYear.addActionListener(this); for(int i=1;i<=12;i++) choiceMonth.addItem(i); choiceMonth.addActionListener(this); JPanel pNorth=new JPanel(); pNorth.add(choiceYear); pNorth.add(lyear); pNorth.add(choiceMonth); pNorth.add(lmonth); root.add(pNorth,BorderLayout.NORTH); // 表格初始化 setYearAndMonth( 1990, 1); } //設置年月日 public void setYearAndMonth(int y,int m){ calendar.setYear(y); calendar.setMonth(m); String day[]=calendar.getCalendar(); Vector<Object> rowData = new Vector<>(); int row = 0; int column = 0; for(int i = 0; i< 42; i++) { row = i / 7; column = i % 7; tableModel.setValueAt(day[i], row, column); } // 創建 JTable,直接重寫 isCellEditable(),設為不可編輯 table = new JTable(tableModel){ @Override public boolean isCellEditable(int row, int column) { return false; } }; JScrollPane scrollPane = new JScrollPane(table); root.add(scrollPane, BorderLayout.CENTER); // 添加到主界面 table.setFillsViewportHeight(true); table.setRowSelectionAllowed(true); // 整行選擇 table.setRowHeight(30); } public void actionPerformed(ActionEvent e){ //選擇年份 if (e.getSource()==choiceYear){ calendar.setYear((Integer) choiceYear.getSelectedItem()); String day[]=calendar.getCalendar(); Vector<Object> rowData = new Vector<>(); int row = 0; int column = 0; for(int i = 0; i< 42; i++) { row = i / 7; column = i % 7; tableModel.setValueAt(day[i], row, column); } table = new JTable(tableModel){ @Override public boolean isCellEditable(int row, int column) { return false; } }; JScrollPane scrollPane = new JScrollPane(table); root.add(scrollPane, BorderLayout.CENTER); // 添加到主界面 table.setFillsViewportHeight(true); table.setRowSelectionAllowed(true); // 整行選擇 table.setRowHeight(30); } //選擇月份 else if (e.getSource()==choiceMonth){ calendar.setMonth((Integer) choiceMonth.getSelectedItem()); String day[]=calendar.getCalendar(); Vector<Object> rowData = new Vector<>(); int row = 0; int column = 0; for(int i = 0; i< 42; i++) { row = i / 7; column = i % 7; tableModel.setValueAt(day[i], row, column); } } table = new JTable(tableModel){ @Override public boolean isCellEditable(int row, int column) { return false; } }; JScrollPane scrollPane = new JScrollPane(table); root.add(scrollPane, BorderLayout.CENTER); // 添加到主界面 table.setFillsViewportHeight(true); table.setRowSelectionAllowed(true); // 整行選擇 table.setRowHeight(30); } }
ShowView類:
用于顯示窗口,照抄即可,無需理解。
import java.awt.Container; import java.awt.FlowLayout; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; public class ShowView { private static void createGUI() { // 語法:因為MyFrame是JFrame的子類,所以可以這么寫 JFrame frame = new MyFrame("日歷"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 設置窗口的其他參數,如窗口大小 frame.setSize(400, 300); // 顯示窗口 frame.setVisible(true); } public static void main(String[] args) { // 此段代碼間接地調用了 createGUI() javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { createGUI(); } }); } }
上述就是小編為大家分享的使用Java JTable 實現日歷功能了,如果剛好有類似的疑惑,不妨參照上述分析進行理解。如果想知道更多相關知識,歡迎關注億速云行業資訊頻道。
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