DateChooser日期选择器swing

网上找的，不错的日期选择器，在此分享给大家。

packagecn.xcu.ui;

importjava.awt.BasicStroke;
importjava.awt.BorderLayout;
importjava.awt.Color;
importjava.awt.Component;
importjava.awt.Cursor;
importjava.awt.Dimension;
importjava.awt.Font;
importjava.awt.Graphics;
importjava.awt.Graphics2D;
importjava.awt.GridLayout;
importjava.awt.Point;
importjava.awt.Polygon;
importjava.awt.Stroke;
importjava.awt.Toolkit;
importjava.awt.event.FocusEvent;
importjava.awt.event.FocusListener;
importjava.awt.event.MouseAdapter;
importjava.awt.event.MouseEvent;
importjava.awt.event.MouseListener;
importjava.awt.event.MouseMotionListener;
importjava.text.SimpleDateFormat;
importjava.util.ArrayList;
importjava.util.Calendar;
importjava.util.Comparator;
importjava.util.Date;
importjava.util.List;
importjavax.swing.BorderFactory;
importjavax.swing.JButton;
importjavax.swing.JFrame;
importjavax.swing.JLabel;
importjavax.swing.JPanel;
importjavax.swing.Popup;
importjavax.swing.PopupFactory;
importjavax.swing.SwingUtilities;
importjavax.swing.event.AncestorEvent;
importjavax.swing.event.AncestorListener;

/**
*日期选择器
*/
publicclassDateChooserextendsJPanel{

privatestaticfinallongserialVersionUID=4529266044762990227L;

privateDateinitDate;
privateCalendarnow=Calendar.getInstance();
privateCalendarselect;
privateJPanelmonthPanel;//月历
privateJP1jp1;//四块面板,组成
privateJP2jp2;
privateJP3jp3;
privateJP4jp4;
privateFontfont=newFont("宋体",Font.PLAIN,12);
privatefinalLabelManagerlm=newLabelManager();
privateJLabelshowDate;//,toSelect;
privateSimpleDateFormatsdf=newSimpleDateFormat("yyyy年MM月dd日");
privatebooleanisShow=false;
privatePopuppop;

/**
*CreatesanewinstanceofDateChooser
*/
publicDateChooser(){
this(newDate());
}
publicDateChooser(Datedate){
initDate=date;
select=Calendar.getInstance();
select.setTime(initDate);
initPanel();
initLabel();
}

publicvoidsetEnabled(booleanb){
super.setEnabled(b);
showDate.setEnabled(b);
}

/**
*得到当前选择框的日期
*/
publicDategetDate(){
returnselect.getTime();
}

//根据初始化的日期,初始化面板
privatevoidinitPanel(){
monthPanel=newJPanel(newBorderLayout());
monthPanel.setBorder(BorderFactory.createLineBorder(Color.BLUE));
JPanelup=newJPanel(newBorderLayout());
up.add(jp1=newJP1(),BorderLayout.NORTH);
up.add(jp2=newJP2(),BorderLayout.CENTER);
monthPanel.add(jp3=newJP3(),BorderLayout.CENTER);
monthPanel.add(up,BorderLayout.NORTH);
monthPanel.add(jp4=newJP4(),BorderLayout.SOUTH);
this.addAncestorListener(newAncestorListener(){
publicvoidancestorAdded(AncestorEventevent){

}
publicvoidancestorRemoved(AncestorEventevent){

}
//只要祖先组件一移动,马上就让popup消失
publicvoidancestorMoved(AncestorEventevent){
hidePanel();
}
});
}
//初始化标签
privatevoidinitLabel(){
showDate=newJLabel(sdf.format(initDate));
showDate.setRequestFocusEnabled(true);
showDate.addMouseListener(newMouseAdapter(){
publicvoidmousePressed(MouseEventme){
showDate.requestFocusInWindow();
}
});
//toSelect=newJLabel(sdf.format(initDate));
//toSelect.setBorder(BorderFactory.createLineBorder(Color.BLACK));
//toSelect.setRequestFocusEnabled(true);
this.setBackground(Color.WHITE);
this.add(showDate,BorderLayout.CENTER);
//this.add(toSelect,BorderLayout.EAST);
this.setPreferredSize(newDimension(90,25));
this.setBorder(BorderFactory.createLineBorder(Color.GRAY));
showDate.addMouseListener(newMouseAdapter(){
publicvoidmouseEntered(MouseEventme){
if(showDate.isEnabled()){
showDate.setCursor(newCursor(Cursor.HAND_CURSOR));
showDate.setForeground(Color.RED);
}
}
publicvoidmouseExited(MouseEventme){
if(showDate.isEnabled()){
showDate.setCursor(newCursor(Cursor.DEFAULT_CURSOR));
showDate.setForeground(Color.BLACK);
}
}
publicvoidmousePressed(MouseEventme){
if(showDate.isEnabled()){
showDate.setForeground(Color.CYAN);
if(isShow){
hidePanel();
}else{
showPanel(showDate);
}
}
}
publicvoidmouseReleased(MouseEventme){
if(showDate.isEnabled()){
showDate.setForeground(Color.BLACK);
}
}
});
showDate.addFocusListener(newFocusListener(){
publicvoidfocusLost(FocusEvente){
hidePanel();
}
publicvoidfocusGained(FocusEvente){

}
});
}
//根据新的日期刷新
privatevoidrefresh(){
jp1.updateDate();
jp3.updateDate();
SwingUtilities.updateComponentTreeUI(this);
}
//提交日期
privatevoidcommit(){
System.out.println("选中的日期是："+sdf.format(select.getTime()));
showDate.setText(sdf.format(select.getTime()));
hidePanel();
}
//隐藏日期选择面板
privatevoidhidePanel(){
if(pop!=null){
isShow=false;
pop.hide();
pop=null;
}
}
//显示日期选择面板
privatevoidshowPanel(Componentowner){
if(pop!=null){
pop.hide();
}
Pointshow=newPoint(0,showDate.getHeight());
SwingUtilities.convertPointToScreen(show,showDate);
Dimensionsize=Toolkit.getDefaultToolkit().getScreenSize();
intx=show.x;
inty=show.y;
if(x<0){
x=0;
}
if(x>size.width-295){
x=size.width-295;
}
if(y<size.height-170){
}else{
y-=188;
}
pop=PopupFactory.getSharedInstance().getPopup(owner,monthPanel,x,y);
pop.show();
isShow=true;
}
/**
*最上面的面板用来显示月份的增减
*/
privateclassJP1extendsJPanel{
JLabelleft,right,center;
publicJP1(){
super(newBorderLayout());
this.setBackground(newColor(160,185,215));
initJP1();
}
privatevoidinitJP1(){
left=newJLabel("<<",JLabel.CENTER);
left.setToolTipText("上一月");
right=newJLabel(">>",JLabel.CENTER);
right.setToolTipText("下一月");
left.setBorder(BorderFactory.createEmptyBorder(10,0,0,0));
right.setBorder(BorderFactory.createEmptyBorder(10,0,0,0));
center=newJLabel("",JLabel.CENTER);
updateDate();
this.add(left,BorderLayout.WEST);
this.add(center,BorderLayout.CENTER);
this.add(right,BorderLayout.EAST);
this.setPreferredSize(newDimension(295,25));
left.addMouseListener(newMouseAdapter(){
publicvoidmouseEntered(MouseEventme){
left.setCursor(newCursor(Cursor.HAND_CURSOR));
left.setForeground(Color.RED);
}
publicvoidmouseExited(MouseEventme){
left.setCursor(newCursor(Cursor.DEFAULT_CURSOR));
left.setForeground(Color.BLACK);
}
publicvoidmousePressed(MouseEventme){
select.add(Calendar.MONTH,-1);
left.setForeground(Color.WHITE);
refresh();
}
publicvoidmouseReleased(MouseEventme){
left.setForeground(Color.BLACK);
}
});
right.addMouseListener(newMouseAdapter(){
publicvoidmouseEntered(MouseEventme){
right.setCursor(newCursor(Cursor.HAND_CURSOR));
right.setForeground(Color.RED);
}
publicvoidmouseExited(MouseEventme){
right.setCursor(newCursor(Cursor.DEFAULT_CURSOR));
right.setForeground(Color.BLACK);
}
publicvoidmousePressed(MouseEventme){
select.add(Calendar.MONTH,1);
right.setForeground(Color.WHITE);
refresh();
}
publicvoidmouseReleased(MouseEventme){
right.setForeground(Color.BLACK);
}
});
}
privatevoidupdateDate(){
center.setText(select.get(Calendar.YEAR)+"年"+(select.get(Calendar.MONTH)+1)+"月");
}
}
privateclassJP2extendsJPanel{
publicJP2(){
this.setPreferredSize(newDimension(295,20));
}
protectedvoidpaintComponent(Graphicsg){
g.setFont(font);
g.drawString("星期日星期一星期二星期三星期四星期五星期六",5,10);
g.drawLine(0,15,getWidth(),15);
}
}
privateclassJP3extendsJPanel{
publicJP3(){
super(newGridLayout(6,7));
this.setPreferredSize(newDimension(295,100));
initJP3();
}
privatevoidinitJP3(){
updateDate();
}
publicvoidupdateDate(){
this.removeAll();
lm.clear();
Datetemp=select.getTime();
Calendarselect=Calendar.getInstance();
select.setTime(temp);
select.set(Calendar.DAY_OF_MONTH,1);
intindex=select.get(Calendar.DAY_OF_WEEK);
intsum=(index==1?8:index);
select.add(Calendar.DAY_OF_MONTH,0-sum);
for(inti=0;i<42;i++){
select.add(Calendar.DAY_OF_MONTH,1);
lm.addLabel(newMyLabel(select.get(Calendar.YEAR),
select.get(Calendar.MONTH),select.get(Calendar.DAY_OF_MONTH)));
}
for(MyLabelmy:lm.getLabels()){
this.add(my);
}
select.setTime(temp);
}
}
privateclassMyLabelextendsJLabelimplementsComparator<MyLabel>,
MouseListener,MouseMotionListener{
privateintyear,month,day;
privatebooleanisSelected;
publicMyLabel(intyear,intmonth,intday){
super(""+day,JLabel.CENTER);
this.year=year;
this.day=day;
this.month=month;
this.addMouseListener(this);
this.addMouseMotionListener(this);
this.setFont(font);
if(month==select.get(Calendar.MONTH)){
this.setForeground(Color.BLACK);
}else{
this.setForeground(Color.LIGHT_GRAY);
}
if(day==select.get(Calendar.DAY_OF_MONTH)){
this.setBackground(newColor(160,185,215));
}else{
this.setBackground(Color.WHITE);
}
}
publicbooleangetIsSelected(){
returnisSelected;
}
publicvoidsetSelected(booleanb,booleanisDrag){
isSelected=b;
if(b&&!isDrag){
inttemp=select.get(Calendar.MONTH);
select.set(year,month,day);
if(temp==month){
SwingUtilities.updateComponentTreeUI(jp3);
}else{
refresh();
}
}
this.repaint();
}
protectedvoidpaintComponent(Graphicsg){
if(day==select.get(Calendar.DAY_OF_MONTH)&&
month==select.get(Calendar.MONTH)){
//如果当前日期是选择日期,则高亮显示
g.setColor(newColor(160,185,215));
g.fillRect(0,0,getWidth(),getHeight());
}
if(year==now.get(Calendar.YEAR)&&
month==now.get(Calendar.MONTH)&&
day==now.get(Calendar.DAY_OF_MONTH)){
//如果日期和当前日期一样,则用红框
Graphics2Dgd=(Graphics2D)g;
gd.setColor(Color.RED);
Polygonp=newPolygon();
p.addPoint(0,0);
p.addPoint(getWidth()-1,0);
p.addPoint(getWidth()-1,getHeight()-1);
p.addPoint(0,getHeight()-1);
gd.drawPolygon(p);
}
if(isSelected){//如果被选中了就画出一个虚线框出来
Strokes=newBasicStroke(1.0f,BasicStroke.CAP_SQUARE,
BasicStroke.JOIN_BEVEL,1.0f,newfloat[]{2.0f,2.0f},1.0f);
Graphics2Dgd=(Graphics2D)g;
gd.setStroke(s);
gd.setColor(Color.BLACK);
Polygonp=newPolygon();
p.addPoint(0,0);
p.addPoint(getWidth()-1,0);
p.addPoint(getWidth()-1,getHeight()-1);
p.addPoint(0,getHeight()-1);
gd.drawPolygon(p);
}
super.paintComponent(g);
}
publicbooleancontains(Pointp){
returnthis.getBounds().contains(p);
}
privatevoidupdate(){
repaint();
}
publicvoidmouseClicked(MouseEvente){
}
publicvoidmousePressed(MouseEvente){
isSelected=true;
update();
}
publicvoidmouseReleased(MouseEvente){
Pointp=SwingUtilities.convertPoint(this,e.getPoint(),jp3);
lm.setSelect(p,false);
commit();
}
publicvoidmouseEntered(MouseEvente){
}

publicvoidmouseExited(MouseEvente){
}
publicvoidmouseDragged(MouseEvente){
Pointp=SwingUtilities.convertPoint(this,e.getPoint(),jp3);
lm.setSelect(p,true);
}
publicvoidmouseMoved(MouseEvente){
}
publicintcompare(MyLabelo1,MyLabelo2){
Calendarc1=Calendar.getInstance();
c1.set(o1.year,o2.month,o1.day);
Calendarc2=Calendar.getInstance();
c2.set(o2.year,o2.month,o2.day);
returnc1.compareTo(c2);
}
}
privateclassLabelManager{
privateList<MyLabel>list;
publicLabelManager(){
list=newArrayList<MyLabel>();
}
publicList<MyLabel>getLabels(){
returnlist;
}
publicvoidaddLabel(MyLabelmy){
list.add(my);
}
publicvoidclear(){
list.clear();
}
publicvoidsetSelect(MyLabelmy,booleanb){
for(MyLabelm:list){
if(m.equals(my)){
m.setSelected(true,b);
}else{
m.setSelected(false,b);
}
}
}
publicvoidsetSelect(Pointp,booleanb){
//如果是拖动,则要优化一下,以提高效率
if(b){
//表示是否能返回,不用比较完所有的标签,能返回的标志就是把上一个标签和
//将要显示的标签找到了就可以了
booleanfindPrevious=false,findNext=false;
for(MyLabelm:list){
if(m.contains(p)){
findNext=true;
if(m.getIsSelected()){
findPrevious=true;
}else{
m.setSelected(true,b);
}
}elseif(m.getIsSelected()){
findPrevious=true;
m.setSelected(false,b);
}
if(findPrevious&&findNext){
return;
}
}
}else{
MyLabeltemp=null;
for(MyLabelm:list){
if(m.contains(p)){
temp=m;
}elseif(m.getIsSelected()){
m.setSelected(false,b);
}
}
if(temp!=null){
temp.setSelected(true,b);
}
}
}

}
privateclassJP4extendsJPanel{
publicJP4(){
super(newBorderLayout());
this.setPreferredSize(newDimension(295,20));
this.setBackground(newColor(160,185,215));
SimpleDateFormatsdf=newSimpleDateFormat("yyyy年MM月dd日");
finalJLabeljl=newJLabel("今天:"+sdf.format(newDate()));
jl.setToolTipText("点击回到今天日期");
this.add(jl,BorderLayout.CENTER);
jl.addMouseListener(newMouseAdapter(){
publicvoidmouseEntered(MouseEventme){
jl.setCursor(newCursor(Cursor.HAND_CURSOR));
jl.setForeground(Color.RED);
}
publicvoidmouseExited(MouseEventme){
jl.setCursor(newCursor(Cursor.DEFAULT_CURSOR));
jl.setForeground(Color.BLACK);
}
publicvoidmousePressed(MouseEventme){
jl.setForeground(Color.WHITE);
select.setTime(newDate());
refresh();
commit();
}
publicvoidmouseReleased(MouseEventme){
jl.setForeground(Color.BLACK);
}
});
}
}

publicstaticvoidmain(String[]args){
finalDateChoosermp=newDateChooser();
JFramejf=newJFrame("test");
jf.add(mp,BorderLayout.CENTER);
jf.add(newJButton("测试用的"),BorderLayout.NORTH);
jf.pack();
jf.setLocationRelativeTo(null);
jf.setVisible(true);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}

补充，上面是直接从网上拷的，没有“年”的增减功能，下面是我补充完整的代码.

1，增加“年”的增减操作。

2，增加指定日期格式的构造方法。

与大家分享一下。

packagecn.xcu.ui;

importjava.awt.BasicStroke;
importjava.awt.BorderLayout;
importjava.awt.Color;
importjava.awt.Component;
importjava.awt.Cursor;
importjava.awt.Dimension;
importjava.awt.Font;
importjava.awt.Graphics;
importjava.awt.Graphics2D;
importjava.awt.GridLayout;
importjava.awt.Point;
importjava.awt.Polygon;
importjava.awt.Stroke;
importjava.awt.Toolkit;
importjava.awt.event.FocusEvent;
importjava.awt.event.FocusListener;
importjava.awt.event.MouseAdapter;
importjava.awt.event.MouseEvent;
importjava.awt.event.MouseListener;
importjava.awt.event.MouseMotionListener;
importjava.text.SimpleDateFormat;
importjava.util.ArrayList;
importjava.util.Calendar;
importjava.util.Comparator;
importjava.util.Date;
importjava.util.List;
importjavax.swing.BorderFactory;
importjavax.swing.JButton;
importjavax.swing.JFrame;
importjavax.swing.JLabel;
importjavax.swing.JPanel;
importjavax.swing.Popup;
importjavax.swing.PopupFactory;
importjavax.swing.SwingUtilities;
importjavax.swing.event.AncestorEvent;
importjavax.swing.event.AncestorListener;

/**
*日期选择器，可以指定日期的显示格式
*/
publicclassDateChooserextendsJPanel{

privatestaticfinallongserialVersionUID=4529266044762990227L;

privateDateinitDate;
privateCalendarnow=Calendar.getInstance();
privateCalendarselect;
privateJPanelmonthPanel;//月历
privateJP1jp1;//四块面板,组成
privateJP2jp2;
privateJP3jp3;
privateJP4jp4;
privateFontfont=newFont("宋体",Font.PLAIN,12);
privatefinalLabelManagerlm=newLabelManager();
privateJLabelshowDate;//,toSelect;
privateSimpleDateFormatsdf;
privatebooleanisShow=false;
privatePopuppop;

/**
*CreatesanewinstanceofDateChooser
*/
publicDateChooser(){
this(newDate());
}
publicDateChooser(Datedate){
this(date,"yyyy年MM月dd日");
}
publicDateChooser(Stringformat){
this(newDate(),format);
}
publicDateChooser(Datedate,Stringformat){
initDate=date;
sdf=newSimpleDateFormat(format);
select=Calendar.getInstance();
select.setTime(initDate);
initPanel();
initLabel();
}

/**
*是否允许用户选择
*/
publicvoidsetEnabled(booleanb){
super.setEnabled(b);
showDate.setEnabled(b);
}

/**
*得到当前选择框的日期
*/
publicDategetDate(){
returnselect.getTime();
}

//根据初始化的日期,初始化面板
privatevoidinitPanel(){
monthPanel=newJPanel(newBorderLayout());
monthPanel.setBorder(BorderFactory.createLineBorder(Color.BLUE));
JPanelup=newJPanel(newBorderLayout());
up.add(jp1=newJP1(),BorderLayout.NORTH);
up.add(jp2=newJP2(),BorderLayout.CENTER);
monthPanel.add(jp3=newJP3(),BorderLayout.CENTER);
monthPanel.add(up,BorderLayout.NORTH);
monthPanel.add(jp4=newJP4(),BorderLayout.SOUTH);
this.addAncestorListener(newAncestorListener(){
publicvoidancestorAdded(AncestorEventevent){

}
publicvoidancestorRemoved(AncestorEventevent){

}
//只要祖先组件一移动,马上就让popup消失
publicvoidancestorMoved(AncestorEventevent){
hidePanel();
}
});
}
//初始化标签
privatevoidinitLabel(){
showDate=newJLabel(sdf.format(initDate));
showDate.setRequestFocusEnabled(true);
showDate.addMouseListener(newMouseAdapter(){
publicvoidmousePressed(MouseEventme){
showDate.requestFocusInWindow();
}
});
//toSelect=newJLabel(sdf.format(initDate));
//toSelect.setBorder(BorderFactory.createLineBorder(Color.BLACK));
//toSelect.setRequestFocusEnabled(true);
this.setBackground(Color.WHITE);
this.add(showDate,BorderLayout.CENTER);
//this.add(toSelect,BorderLayout.EAST);
this.setPreferredSize(newDimension(90,25));
this.setBorder(BorderFactory.createLineBorder(Color.GRAY));
showDate.addMouseListener(newMouseAdapter(){
publicvoidmouseEntered(MouseEventme){
if(showDate.isEnabled()){
showDate.setCursor(newCursor(Cursor.HAND_CURSOR));
showDate.setForeground(Color.RED);
}
}
publicvoidmouseExited(MouseEventme){
if(showDate.isEnabled()){
showDate.setCursor(newCursor(Cursor.DEFAULT_CURSOR));
showDate.setForeground(Color.BLACK);
}
}
publicvoidmousePressed(MouseEventme){
if(showDate.isEnabled()){
showDate.setForeground(Color.CYAN);
if(isShow){
hidePanel();
}else{
showPanel(showDate);
}
}
}
publicvoidmouseReleased(MouseEventme){
if(showDate.isEnabled()){
showDate.setForeground(Color.BLACK);
}
}
});
showDate.addFocusListener(newFocusListener(){
publicvoidfocusLost(FocusEvente){
hidePanel();
}
publicvoidfocusGained(FocusEvente){

}
});
}
//根据新的日期刷新
privatevoidrefresh(){
jp1.updateDate();
jp3.updateDate();
SwingUtilities.updateComponentTreeUI(this);
}
//提交日期
privatevoidcommit(){
System.out.println("选中的日期是："+sdf.format(select.getTime()));
showDate.setText(sdf.format(select.getTime()));
hidePanel();
}
//隐藏日期选择面板
privatevoidhidePanel(){
if(pop!=null){
isShow=false;
pop.hide();
pop=null;
}
}
//显示日期选择面板
privatevoidshowPanel(Componentowner){
if(pop!=null){
pop.hide();
}
Pointshow=newPoint(0,showDate.getHeight());
SwingUtilities.convertPointToScreen(show,showDate);
Dimensionsize=Toolkit.getDefaultToolkit().getScreenSize();
intx=show.x;
inty=show.y;
if(x<0){
x=0;
}
if(x>size.width-295){
x=size.width-295;
}
if(y<size.height-170){
}else{
y-=188;
}
pop=PopupFactory.getSharedInstance().getPopup(owner,monthPanel,x,y);
pop.show();
isShow=true;
}
/**
*最上面的面板用来显示月份的增减
*/
privateclassJP1extendsJPanel{
JLabelyearleft,yearright,monthleft,monthright,center,centercontainer;
publicJP1(){
super(newBorderLayout());
this.setBackground(newColor(160,185,215));
initJP1();
}
privatevoidinitJP1(){
yearleft=newJLabel("<<",JLabel.CENTER);
yearleft.setToolTipText("上一年");
yearright=newJLabel(">>",JLabel.CENTER);
yearright.setToolTipText("下一年");
yearleft.setBorder(BorderFactory.createEmptyBorder(2,0,0,0));
yearright.setBorder(BorderFactory.createEmptyBorder(2,0,0,0));

monthleft=newJLabel("<",JLabel.RIGHT);
monthleft.setToolTipText("上一月");
monthright=newJLabel(">",JLabel.LEFT);
monthright.setToolTipText("下一月");
monthleft.setBorder(BorderFactory.createEmptyBorder(2,30,0,0));
monthright.setBorder(BorderFactory.createEmptyBorder(2,0,0,30));

centercontainer=newJLabel("",JLabel.CENTER);
centercontainer.setLayout(newBorderLayout());
center=newJLabel("",JLabel.CENTER);

centercontainer.add(monthleft,BorderLayout.WEST);
centercontainer.add(center,BorderLayout.CENTER);
centercontainer.add(monthright,BorderLayout.EAST);

this.add(yearleft,BorderLayout.WEST);
this.add(centercontainer,BorderLayout.CENTER);
this.add(yearright,BorderLayout.EAST);
this.setPreferredSize(newDimension(295,25));

updateDate();

yearleft.addMouseListener(newMouseAdapter(){
publicvoidmouseEntered(MouseEventme){
yearleft.setCursor(newCursor(Cursor.HAND_CURSOR));
yearleft.setForeground(Color.RED);
}
publicvoidmouseExited(MouseEventme){
yearleft.setCursor(newCursor(Cursor.DEFAULT_CURSOR));
yearleft.setForeground(Color.BLACK);
}
publicvoidmousePressed(MouseEventme){
select.add(Calendar.YEAR,-1);
yearleft.setForeground(Color.WHITE);
refresh();
}
publicvoidmouseReleased(MouseEventme){
yearleft.setForeground(Color.BLACK);
}
});
yearright.addMouseListener(newMouseAdapter(){
publicvoidmouseEntered(MouseEventme){
yearright.setCursor(newCursor(Cursor.HAND_CURSOR));
yearright.setForeground(Color.RED);
}
publicvoidmouseExited(MouseEventme){
yearright.setCursor(newCursor(Cursor.DEFAULT_CURSOR));
yearright.setForeground(Color.BLACK);
}
publicvoidmousePressed(MouseEventme){
select.add(Calendar.YEAR,1);
yearright.setForeground(Color.WHITE);
refresh();
}
publicvoidmouseReleased(MouseEventme){
yearright.setForeground(Color.BLACK);
}
});
monthleft.addMouseListener(newMouseAdapter(){
publicvoidmouseEntered(MouseEventme){
monthleft.setCursor(newCursor(Cursor.HAND_CURSOR));
monthleft.setForeground(Color.RED);
}
publicvoidmouseExited(MouseEventme){
monthleft.setCursor(newCursor(Cursor.DEFAULT_CURSOR));
monthleft.setForeground(Color.BLACK);
}
publicvoidmousePressed(MouseEventme){
select.add(Calendar.MONTH,-1);
monthleft.setForeground(Color.WHITE);
refresh();
}
publicvoidmouseReleased(MouseEventme){
monthleft.setForeground(Color.BLACK);
}
});
monthright.addMouseListener(newMouseAdapter(){
publicvoidmouseEntered(MouseEventme){
monthright.setCursor(newCursor(Cursor.HAND_CURSOR));
monthright.setForeground(Color.RED);
}
publicvoidmouseExited(MouseEventme){
monthright.setCursor(newCursor(Cursor.DEFAULT_CURSOR));
monthright.setForeground(Color.BLACK);
}
publicvoidmousePressed(MouseEventme){
select.add(Calendar.MONTH,1);
monthright.setForeground(Color.WHITE);
refresh();
}
publicvoidmouseReleased(MouseEventme){
monthright.setForeground(Color.BLACK);
}
});
}
privatevoidupdateDate(){
center.setText(select.get(Calendar.YEAR)+"年"+(select.get(Calendar.MONTH)+1)+"月");
}
}
privateclassJP2extendsJPanel{
publicJP2(){
this.setPreferredSize(newDimension(295,20));
}
protectedvoidpaintComponent(Graphicsg){
g.setFont(font);
g.drawString("星期日星期一星期二星期三星期四星期五星期六",5,10);
g.drawLine(0,15,getWidth(),15);
}
}
privateclassJP3extendsJPanel{
publicJP3(){
super(newGridLayout(6,7));
this.setPreferredSize(newDimension(295,100));
initJP3();
}
privatevoidinitJP3(){
updateDate();
}
publicvoidupdateDate(){
this.removeAll();
lm.clear();
Datetemp=select.getTime();
Calendarselect=Calendar.getInstance();
select.setTime(temp);
select.set(Calendar.DAY_OF_MONTH,1);
intindex=select.get(Calendar.DAY_OF_WEEK);
intsum=(index==1?8:index);
select.add(Calendar.DAY_OF_MONTH,0-sum);
for(inti=0;i<42;i++){
select.add(Calendar.DAY_OF_MONTH,1);
lm.addLabel(newMyLabel(select.get(Calendar.YEAR),
select.get(Calendar.MONTH),select.get(Calendar.DAY_OF_MONTH)));
}
for(MyLabelmy:lm.getLabels()){
this.add(my);
}
select.setTime(temp);
}
}
privateclassMyLabelextendsJLabelimplementsComparator<MyLabel>,
MouseListener,MouseMotionListener{
privateintyear,month,day;
privatebooleanisSelected;
publicMyLabel(intyear,intmonth,intday){
super(""+day,JLabel.CENTER);
this.year=year;
this.day=day;
this.month=month;
this.addMouseListener(this);
this.addMouseMotionListener(this);
this.setFont(font);
if(month==select.get(Calendar.MONTH)){
this.setForeground(Color.BLACK);
}else{
this.setForeground(Color.LIGHT_GRAY);
}
if(day==select.get(Calendar.DAY_OF_MONTH)){
this.setBackground(newColor(160,185,215));
}else{
this.setBackground(Color.WHITE);
}
}
publicbooleangetIsSelected(){
returnisSelected;
}
publicvoidsetSelected(booleanb,booleanisDrag){
isSelected=b;
if(b&&!isDrag){
inttemp=select.get(Calendar.MONTH);
select.set(year,month,day);
if(temp==month){
SwingUtilities.updateComponentTreeUI(jp3);
}else{
refresh();
}
}
this.repaint();
}
protectedvoidpaintComponent(Graphicsg){
if(day==select.get(Calendar.DAY_OF_MONTH)&&
month==select.get(Calendar.MONTH)){
//如果当前日期是选择日期,则高亮显示
g.setColor(newColor(160,185,215));
g.fillRect(0,0,getWidth(),getHeight());
}
if(year==now.get(Calendar.YEAR)&&
month==now.get(Calendar.MONTH)&&
day==now.get(Calendar.DAY_OF_MONTH)){
//如果日期和当前日期一样,则用红框
Graphics2Dgd=(Graphics2D)g;
gd.setColor(Color.RED);
Polygonp=newPolygon();
p.addPoint(0,0);
p.addPoint(getWidth()-1,0);
p.addPoint(getWidth()-1,getHeight()-1);
p.addPoint(0,getHeight()-1);
gd.drawPolygon(p);
}
if(isSelected){//如果被选中了就画出一个虚线框出来
Strokes=newBasicStroke(1.0f,BasicStroke.CAP_SQUARE,
BasicStroke.JOIN_BEVEL,1.0f,newfloat[]{2.0f,2.0f},1.0f);
Graphics2Dgd=(Graphics2D)g;
gd.setStroke(s);
gd.setColor(Color.BLACK);
Polygonp=newPolygon();
p.addPoint(0,0);
p.addPoint(getWidth()-1,0);
p.addPoint(getWidth()-1,getHeight()-1);
p.addPoint(0,getHeight()-1);
gd.drawPolygon(p);
}
super.paintComponent(g);
}
publicbooleancontains(Pointp){
returnthis.getBounds().contains(p);
}
privatevoidupdate(){
repaint();
}
publicvoidmouseClicked(MouseEvente){
}
publicvoidmousePressed(MouseEvente){
isSelected=true;
update();
}
publicvoidmouseReleased(MouseEvente){
Pointp=SwingUtilities.convertPoint(this,e.getPoint(),jp3);
lm.setSelect(p,false);
commit();
}
publicvoidmouseEntered(MouseEvente){
}

publicvoidmouseExited(MouseEvente){
}
publicvoidmouseDragged(MouseEvente){
Pointp=SwingUtilities.convertPoint(this,e.getPoint(),jp3);
lm.setSelect(p,true);
}
publicvoidmouseMoved(MouseEvente){
}
publicintcompare(MyLabelo1,MyLabelo2){
Calendarc1=Calendar.getInstance();
c1.set(o1.year,o2.month,o1.day);
Calendarc2=Calendar.getInstance();
c2.set(o2.year,o2.month,o2.day);
returnc1.compareTo(c2);
}
}
privateclassLabelManager{
privateList<MyLabel>list;
publicLabelManager(){
list=newArrayList<MyLabel>();
}
publicList<MyLabel>getLabels(){
returnlist;
}
publicvoidaddLabel(MyLabelmy){
list.add(my);
}
publicvoidclear(){
list.clear();
}
publicvoidsetSelect(MyLabelmy,booleanb){
for(MyLabelm:list){
if(m.equals(my)){
m.setSelected(true,b);
}else{
m.setSelected(false,b);
}
}
}
publicvoidsetSelect(Pointp,booleanb){
//如果是拖动,则要优化一下,以提高效率
if(b){
//表示是否能返回,不用比较完所有的标签,能返回的标志就是把上一个标签和
//将要显示的标签找到了就可以了
booleanfindPrevious=false,findNext=false;
for(MyLabelm:list){
if(m.contains(p)){
findNext=true;
if(m.getIsSelected()){
findPrevious=true;
}else{
m.setSelected(true,b);
}
}elseif(m.getIsSelected()){
findPrevious=true;
m.setSelected(false,b);
}
if(findPrevious&&findNext){
return;
}
}
}else{
MyLabeltemp=null;
for(MyLabelm:list){
if(m.contains(p)){
temp=m;
}elseif(m.getIsSelected()){
m.setSelected(false,b);
}
}
if(temp!=null){
temp.setSelected(true,b);
}
}
}

}
privateclassJP4extendsJPanel{
publicJP4(){
super(newBorderLayout());
this.setPreferredSize(newDimension(295,20));
this.setBackground(newColor(160,185,215));
SimpleDateFormatsdf=newSimpleDateFormat("yyyy年MM月dd日");
finalJLabeljl=newJLabel("今天:"+sdf.format(newDate()));
jl.setToolTipText("点击选择今天日期");
this.add(jl,BorderLayout.CENTER);
jl.addMouseListener(newMouseAdapter(){
publicvoidmouseEntered(MouseEventme){
jl.setCursor(newCursor(Cursor.HAND_CURSOR));
jl.setForeground(Color.RED);
}
publicvoidmouseExited(MouseEventme){
jl.setCursor(newCursor(Cursor.DEFAULT_CURSOR));
jl.setForeground(Color.BLACK);
}
publicvoidmousePressed(MouseEventme){
jl.setForeground(Color.WHITE);
select.setTime(newDate());
refresh();
commit();
}
publicvoidmouseReleased(MouseEventme){
jl.setForeground(Color.BLACK);
}
});
}
}

publicstaticvoidmain(String[]args){
finalDateChoosermp=newDateChooser("yyyy-MM-dd");
JFramejf=newJFrame("测试日期选择器");
jf.add(mp,BorderLayout.CENTER);
jf.add(newJButton("测试用的"),BorderLayout.NORTH);
jf.pack();
jf.setLocationRelativeTo(null);
jf.setVisible(true);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}

运行效果图如下：