Java实现日期选择，一个简单的Java Swing时间日期选择控件的代码示例，带有中文注释

package utils; import javax.swing.*; import java.awt.*; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.time.LocalDate; import java.time.format.TextStyle; import java.util.ArrayList; import java.util.List; import java.util.Locale; public class JPanelByCalendar extends JPanel { String[] weekName=new String[]{"一","二","三","四","五","六","日"}; private int status=0;//0日期，1月份，2年份 private LocalDate focusDate; private JLabel focusDayJLabel; private LocalDate nowDate=LocalDate.now(); private JLabel nowMonthJLabel; private JLabel head;//头部容器 private JPanel yearJPanel;//年份显示容器 private List<JLabel> yearJLabel=new ArrayList<>(12); private JPanel monthJPanel;//月份显示容器 private List<JLabel> monthJLabel=new ArrayList<>(12); private JPanel dayJPanel;//日期显示容器 private List<JLabel> dayJLabel=new ArrayList<>(49); private JLabel viewJLabel;//动态显示月份/年份 private JLabel upJLabel;//上一页按钮 private JLabel downJLabel;//下一页按钮 public JPanelByCalendar() { super(); this.setLayout(null); head = new JLabel(); head.setBounds(0,0,300,50); // 获取当前日期 LocalDate currentDate = LocalDate.now(); focusDate=currentDate; int year = currentDate.getYear(); int month = currentDate.getMonthValue(); int dayOfMonth = currentDate.getDayOfMonth(); String dayOfWeek = currentDate.getDayOfWeek().getDisplayName(TextStyle.FULL, Locale.getDefault()); JLabel nowDateJLabel=new JLabel(String.format("%s年%s月%s日，%s",year,month,dayOfMonth,dayOfWeek)); nowDateJLabel.setBounds(0,0,300,20); nowDateJLabel.setHorizontalAlignment(JLabel.CENTER); nowDateJLabel.setOpaque(true); nowDateJLabel.setBackground(Color.LIGHT_GRAY); viewJLabel=new JLabel(String.format("\t%s年%s月",year,month)); viewJLabel.addMouseListener(new MouseUpListener(viewJLabel,0) { @Override public void mouseClicked(MouseEvent e) { //修改选框 if(status==0){ status=1; //展示月份 refreshMonthJPanel(); JPanelByCalendar.this.remove(1); JPanelByCalendar.this.add(monthJPanel,1); JPanelByCalendar.this.repaint(); }else if(status==1){ status=2; //展示年份 refreshYearJPanel(); JPanelByCalendar.this.remove(1); JPanelByCalendar.this.add(yearJPanel,1); JPanelByCalendar.this.repaint(); } } }); viewJLabel.setBounds(15,22,170,24); viewJLabel.setOpaque(true); // viewJLabel.setBackground(Color.lightGray); //向上翻页 upJLabel=new JLabel("㊤"); upJLabel.addMouseListener(new MouseUpListener(upJLabel,0) { @Override public void mouseClicked(MouseEvent e) { if(status==0){ focusDate=focusDate.minusMonths(1); refreshDayJPanel(); }else if(status==1){ focusDate=focusDate.minusYears(1); refreshMonthJPanel(); }else { focusDate=focusDate.minusYears(16); refreshYearJPanel(); } JPanelByCalendar.this.repaint(); } }); upJLabel.setBounds(195,22,40,24); upJLabel.setOpaque(true); // upJLabel.setBackground(Color.lightGray); upJLabel.setHorizontalAlignment(JLabel.CENTER); //向下翻页 downJLabel=new JLabel("㊦"); downJLabel.addMouseListener(new MouseUpListener(downJLabel,0) { @Override public void mouseClicked(MouseEvent e) { if(status==0){ focusDate=focusDate.plusMonths(1); refreshDayJPanel(); }else if(status==1){ focusDate=focusDate.plusYears(1); refreshMonthJPanel(); }else { focusDate=focusDate.plusYears(16); refreshYearJPanel(); } JPanelByCalendar.this.repaint(); } }); downJLabel.setBounds(245,22,40,24); downJLabel.setOpaque(true); // downJLabel.setBackground(Color.lightGray); downJLabel.setHorizontalAlignment(JLabel.CENTER); head.add(nowDateJLabel,0); head.add(upJLabel,1); head.add(downJLabel,2); head.add(viewJLabel,3); head.setBorder(BorderFactory.createMatteBorder(0,0,2,0,Color.gray)); this.add(head,0); //初始化年份 yearJPanel=new JPanel(); yearJPanel.setLayout(new GridLayout(4,4)); yearJPanel.setBounds(0,50,300,212); yearJPanel.setBorder(BorderFactory.createLineBorder(Color.gray,1)); for (int i = year; i <year+16; i++) { JLabel jLabel = new JLabel(); jLabel.setOpaque(true); jLabel.setBackground(Color.white); jLabel.setHorizontalAlignment(JLabel.CENTER); jLabel.addMouseListener(new MouseUpListener(jLabel) { @Override public void mouseClicked(MouseEvent e) { status=1; jLabel.setBackground(Color.white); int year = Integer.valueOf(jLabel.getText()); focusDate=LocalDate.ofYearDay(year,1); //展示月份 refreshMonthJPanel(); JPanelByCalendar.this.remove(1); JPanelByCalendar.this.add(monthJPanel,1); JPanelByCalendar.this.repaint(); } }); yearJLabel.add(jLabel); yearJPanel.add(jLabel); } //初始化月份 monthJPanel=new JPanel(); monthJPanel.setLayout(new GridLayout(3,4)); monthJPanel.setBounds(0,50,300,212); monthJPanel.setBorder(BorderFactory.createLineBorder(Color.gray,1)); for (int i = 1; i <= 12; i++) { JLabel jLabel = new JLabel(); jLabel.setOpaque(true); jLabel.setBackground(Color.white); jLabel.setHorizontalAlignment(JLabel.CENTER); jLabel.setText(String.valueOf(i)); jLabel.addMouseListener(new MouseUpListener(jLabel) { @Override public void mouseClicked(MouseEvent e) { status=0; jLabel.setBackground(Color.white); int month = Integer.valueOf(jLabel.getText()); focusDate=focusDate.withMonth(month).withDayOfMonth(1); //展示日期 refreshDayJPanel(); JPanelByCalendar.this.remove(1); JPanelByCalendar.this.add(dayJPanel,1); JPanelByCalendar.this.repaint(); } }); monthJPanel.add(jLabel); monthJLabel.add(jLabel); } //初始化日期 dayJPanel=new JPanel(); dayJPanel.setLayout(new GridLayout(7,7)); dayJPanel.setBounds(0,50,300,212); dayJPanel.setBorder(BorderFactory.createLineBorder(Color.gray,1)); for (int i = 0; i < 49; i++) { JLabel jLabel = new JLabel(); jLabel.setOpaque(true); jLabel.setBackground(Color.white); jLabel.setHorizontalAlignment(JLabel.CENT