java GUI简单日历查看
Posted algorithmvcerhj
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了java GUI简单日历查看相关的知识，希望对你有一定的参考价值。
import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.Calendar; public class swingCalendar extends JFrame implements ActionListener { public static swingCalendar u1; private JTextField jTextField; private JTextArea jTextArea; private JButton[] jButton; private JMenuItem[] jMenuItems; private JMenu[] jMenus; private JMenuBar mbar; private JComboBox comboBox; private JLabel jLabel; public swingCalendar(){ super("日历"); jButton = new JButton[1]; jMenus = new JMenu[3]; jButton = new JButton[1]; comboBox = new JComboBox<String>(); jLabel = new JLabel(); jTextField = new JTextField(); jTextArea = new JTextArea(); jMenuItems = new JMenuItem[4]; jMenuItems[0] = new JMenuItem("关于我"); jMenuItems[1] = new JMenuItem("帮助文档"); jMenuItems[2] = new JMenuItem("退出"); jMenuItems[3] = new JMenuItem("清零"); jMenuItems[0].addActionListener(this); jMenuItems[1].addActionListener(this); jMenuItems[2].addActionListener(this); jMenuItems[3].addActionListener(this); jMenus[0] = new JMenu("查看(V)"); jMenus[1] = new JMenu("编辑(E)"); jMenus[2] = new JMenu("帮助(H)"); for (int i = 0 ; i < jMenus.length;i++){ jMenus[i].addActionListener(this); } jMenus[2].add(jMenuItems[0]); jMenus[2].add(jMenuItems[1]); jMenus[2].add(jMenuItems[2]); jMenus[1].add(jMenuItems[3]); comboBox.addItem("一月"); comboBox.addItem("二月"); comboBox.addItem("三月"); comboBox.addItem("四月"); comboBox.addItem("五月"); comboBox.addItem("六月"); comboBox.addItem("七月"); comboBox.addItem("八月"); comboBox.addItem("九月"); comboBox.addItem("十月"); comboBox.addItem("十一月"); comboBox.addItem("十二月"); comboBox.addActionListener(this); comboBox.setBounds(100,20,70,30); jButton[0] = new JButton("确定"); jButton[0].setBounds(350,20,70,30); jButton[0].setForeground(Color.blue); jButton[0].setFont(new Font("宋体",Font.PLAIN,14)); jButton[0].addActionListener(this); jTextField= new JTextField("",40); jTextField.setFont(new Font("宋体",Font.PLAIN,11)); jTextField.setForeground(Color.black); jTextField.setBounds(10,20,50,30); jTextField.setHorizontalAlignment(JTextField.RIGHT); jTextField.addActionListener(this); jTextField.setEditable(true); mbar = new JMenuBar(); mbar.add(jMenus[0]); mbar.add(jMenus[1]); mbar.add(jMenus[2]); this.setJMenuBar(mbar); jTextArea = new JTextArea(); jTextArea.setFont(new Font("宋体",Font.BOLD,14)); jTextArea.setForeground(Color.black); jTextArea.setBounds(50,110,400,300); jTextArea.setEditable(false); jLabel.setBounds(230,20,50,30); jLabel.setText(""); jLabel.setForeground(Color.red); Container winContainer = this.getContentPane(); winContainer.setLayout(null); winContainer.add(jTextField); winContainer.add(jTextArea); winContainer.add(jButton[0]); winContainer.add(comboBox); winContainer.add(jTextArea); winContainer.add(jLabel); this.setTitle("日历"); this.setLocation(300, 300); this.setSize(500,500); this.setVisible(true); } public static void main(String[] args) { u1 = new swingCalendar(); } public void actionPerformed(ActionEvent e){ if(e.getSource()==jButton[0]) { jLabel.setText(""); jTextArea.setText(""); String aa = jTextField.getText(); if (aa.charAt(0)<‘0‘||aa.charAt(0)>‘9‘){ JOptionPane.showMessageDialog(u1, "无法读取你的输入,请重新输入", "提示消息", 1); comboBox.setSelectedIndex(0); jTextField.setText(""); } else{ int year = Integer.valueOf(aa); if (year <= 250) { JOptionPane.showMessageDialog(u1, "对不起,本日历无法查询到"+year+"年的日历\n\t请点击菜单栏-帮助-联系工程师", "提示消息", 1); comboBox.setSelectedIndex(0); jTextField.setText(""); } else { jLabel.setText(aa); String[] English = {"一", "二", "三", "四", "五", "六", "日"}; String[] Month = {"一月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "十一月", "十二月",}; Calendar calendar = Calendar.getInstance(); StringBuffer stringBuffer = new StringBuffer(""); for (int j = 0; j < English.length; j++) { stringBuffer.append(English[j] + "\t"); } stringBuffer.append("\n"); int index = comboBox.getSelectedIndex(); calendar.clear(); calendar.set(Calendar.YEAR, year); switch (index) { case 0: { calendar.set(Calendar.MONTH, index); int Month_Days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); int First_Day = calendar.get(Calendar.DAY_OF_WEEK) - 1; int n = 0; if (First_Day > 0) { for (int k = 2; k <= First_Day; k++) { n = First_Day - 1; stringBuffer.append("\t"); } } if (First_Day == 0) { n = 6; for (int k = 1; k < 7; k++) { stringBuffer.append("\t"); } } for (int k = 1; k <= Month_Days; k++) { stringBuffer.append(k + "\t"); n++; if (n % 7 == 0) { stringBuffer.append("\n"); } } break; } case 1: { calendar.set(Calendar.MONTH, index); int Month_Days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); int First_Day = calendar.get(Calendar.DAY_OF_WEEK) - 1; int n = 0; if (First_Day > 0) { for (int k = 2; k <= First_Day; k++) { n = First_Day - 1; stringBuffer.append("\t"); } } if (First_Day == 0) { n = 6; for (int k = 1; k < 7; k++) { stringBuffer.append("\t"); } } for (int k = 1; k <= Month_Days; k++) { stringBuffer.append(k + "\t"); n++; if (n % 7 == 0) { stringBuffer.append("\n"); } } break; } case 2: { calendar.set(Calendar.MONTH, index); int Month_Days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); int First_Day = calendar.get(Calendar.DAY_OF_WEEK) - 1; int n = 0; if (First_Day > 0) { for (int k = 2; k <= First_Day; k++) { n = First_Day - 1; stringBuffer.append("\t"); } } if (First_Day == 0) { n = 6; for (int k = 1; k < 7; k++) { stringBuffer.append("\t"); } } for (int k = 1; k <= Month_Days; k++) { stringBuffer.append(k + "\t"); n++; if (n % 7 == 0) { stringBuffer.append("\n"); } } break; } case 3: { calendar.set(Calendar.MONTH, index); int Month_Days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); int First_Day = calendar.get(Calendar.DAY_OF_WEEK) - 1; int n = 0; if (First_Day > 0) { for (int k = 2; k <= First_Day; k++) { n = First_Day - 1; stringBuffer.append("\t"); } } if (First_Day == 0) { n = 6; for (int k = 1; k < 7; k++) { stringBuffer.append("\t"); } } for (int k = 1; k <= Month_Days; k++) { stringBuffer.append(k + "\t"); n++; if (n % 7 == 0) { stringBuffer.append("\n"); } } break; } case 4: { calendar.set(Calendar.MONTH, index); int Month_Days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); int First_Day = calendar.get(Calendar.DAY_OF_WEEK) - 1; int n = 0; if (First_Day > 0) { for (int k = 2; k <= First_Day; k++) { n = First_Day - 1; stringBuffer.append("\t"); } } if (First_Day == 0) { n = 6; for (int k = 1; k < 7; k++) { stringBuffer.append("\t"); } } for (int k = 1; k <= Month_Days; k++) { stringBuffer.append(k + "\t"); n++; if (n % 7 == 0) { stringBuffer.append("\n"); } } break; } case 5: { calendar.set(Calendar.MONTH, index); int Month_Days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); int First_Day = calendar.get(Calendar.DAY_OF_WEEK) - 1; int n = 0; if (First_Day > 0) { for (int k = 2; k <= First_Day; k++) { n = First_Day - 1; stringBuffer.append("\t"); } } if (First_Day == 0) { n = 6; for (int k = 1; k < 7; k++) { stringBuffer.append("\t"); } } for (int k = 1; k <= Month_Days; k++) { stringBuffer.append(k + "\t"); n++; if (n % 7 == 0) { stringBuffer.append("\n"); } } break; } case 6: { calendar.set(Calendar.MONTH, index); int Month_Days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); int First_Day = calendar.get(Calendar.DAY_OF_WEEK) - 1; int n = 0; if (First_Day > 0) { for (int k = 2; k <= First_Day; k++) { n = First_Day - 1; stringBuffer.append("\t"); } } if (First_Day == 0) { n = 6; for (int k = 1; k < 7; k++) { stringBuffer.append("\t"); } } for (int k = 1; k <= Month_Days; k++) { stringBuffer.append(k + "\t"); n++; if (n % 7 == 0) { stringBuffer.append("\n"); } } break; } case 7: { calendar.set(Calendar.MONTH, index); int Month_Days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); int First_Day = calendar.get(Calendar.DAY_OF_WEEK) - 1; int n = 0; if (First_Day > 0) { for (int k = 2; k <= First_Day; k++) { n = First_Day - 1; stringBuffer.append("\t"); } } if (First_Day == 0) { n = 6; for (int k = 1; k < 7; k++) { stringBuffer.append("\t"); } } for (int k = 1; k <= Month_Days; k++) { stringBuffer.append(k + "\t"); n++; if (n % 7 == 0) { stringBuffer.append("\n"); } } break; } case 8: { calendar.set(Calendar.MONTH, index); int Month_Days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); int First_Day = calendar.get(Calendar.DAY_OF_WEEK) - 1; int n = 0; if (First_Day > 0) { for (int k = 2; k <= First_Day; k++) { n = First_Day - 1; stringBuffer.append("\t"); } } if (First_Day == 0) { n = 6; for (int k = 1; k < 7; k++) { stringBuffer.append("\t"); } } for (int k = 1; k <= Month_Days; k++) { stringBuffer.append(k + "\t"); n++; if (n % 7 == 0) { stringBuffer.append("\n"); } } break; } case 9: { calendar.set(Calendar.MONTH, index); int Month_Days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); int First_Day = calendar.get(Calendar.DAY_OF_WEEK) - 1; int n = 0; if (First_Day > 0) { for (int k = 2; k <= First_Day; k++) { n = First_Day - 1; stringBuffer.append("\t"); } } if (First_Day == 0) { n = 6; for (int k = 1; k < 7; k++) { stringBuffer.append("\t"); } } for (int k = 1; k <= Month_Days; k++) { stringBuffer.append(k + "\t"); n++; if (n % 7 == 0) { stringBuffer.append("\n"); } } break; } case 10: { calendar.set(Calendar.MONTH, index); int Month_Days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); int First_Day = calendar.get(Calendar.DAY_OF_WEEK) - 1; int n = 0; if (First_Day > 0) { for (int k = 2; k <= First_Day; k++) { n = First_Day - 1; stringBuffer.append("\t"); } } if (First_Day == 0) { n = 6; for (int k = 1; k < 7; k++) { stringBuffer.append("\t"); } } for (int k = 1; k <= Month_Days; k++) { stringBuffer.append(k + "\t"); n++; if (n % 7 == 0) { stringBuffer.append("\n"); } } break; } case 11: { calendar.set(Calendar.MONTH, index); int Month_Days = calendar.getActualMaximum(Calendar.DAY_OF_MONTH); int First_Day = calendar.get(Calendar.DAY_OF_WEEK) - 1; int n = 0; if (First_Day > 0) { for (int k = 2; k <= First_Day; k++) { n = First_Day - 1; stringBuffer.append("\t"); } } if (First_Day == 0) { n = 6; for (int k = 1; k < 7; k++) { stringBuffer.append("\t"); } } for (int k = 1; k <= Month_Days; k++) { stringBuffer.append(k + "\t"); n++; if (n % 7 == 0) { stringBuffer.append("\n"); } } break; } } jTextArea.setText(String.valueOf(stringBuffer)); } } } else if (e.getSource()==jMenuItems[0]){ JOptionPane.showMessageDialog(u1,"开发者洪家骏","开发者信息",1); } else if (e.getSource()==jMenuItems[1]){ JOptionPane.showMessageDialog(u1,"暂时没有开发文档","帮助文档",1); } else if (e.getSource()==jMenuItems[2]){ int aa = JOptionPane.showConfirmDialog(u1,"您确定要退出吗！","退出",1); if(aa==0) { System.exit(0); } } else if(e.getSource()==jMenuItems[3]){ jLabel.setText(""); jTextArea.setText(""); jTextField.setText(""); comboBox.setSelectedIndex(0); JOptionPane.showMessageDialog(u1,"清空成功","清空",1); } } }
利用Calendar（国际日期类）与 java的swing 做的一个GUI 简单日历查看，并进行了一些事件捕获。
以上是关于java GUI简单日历查看的主要内容，如果未能解决你的问题，请参考以下文章
❤️python入门项目使用 Tkinter 的 日历 GUI 应用程序❤️