java作业java作业.docx
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java作业java作业
java作业(java作业)
软件工程r1141宋洋16java作业
publicclassqingdrawpadextendsjframe{
privateobjectinputstreaminput;
privateobjectoutputstreamoutput;
privatejbuttonchoices[];privatestring[]names
={
"new"
"open".
"save".
"pencilby",
"line",
"rect',
"frect',
"oval",
"foval',
"circle",
"fcircle',
"roundrect',
"frrect',
"rubber".
"color".
"stroke".
"theword"
};
privatestring[]={stylenames
"宋体","隶书","华文彩云","仿宋_gb2312","华文行楷',
"方正舒体","timesnewroman","serif","monospaced',
"sonsserif","garamond."
privateiconitems[];
jtoolbarbuttonpanel;
privatejlabelstatusbar;
privatedrawpaneldrawingarea;
privateintwidth=850,height=550;
drawings[]itemlist=newdrawings[5];
privateintcurrentchoice=3;
intindex=0;
privatecolorcolor=color.black;
intr,g,b;
intf1,f2;
thestringstyle1;
privatefloatstroke=1.0f;
jcheckboxbold,italic;
jcomboboxstyles;
publicqingdrawpad()
{
super("卿乐绘图画板(中国风)");
jmenubarbar=newjmenubar();
jmenufilemenu=newjmenu("文件");
//filemenu.setmnemonic("f");
jmenuitemnewitem=newjmenuitem("新建");
newitem.addactionlistener(
newactionlistener(){
publicvoidactionperformed(actionevent(e)
newfile();}
}
);
filemenu.add(newitem);
jmenuitemsaveitem=newjmenuitem("保存");
saveitem.addactionlistener(
savefile();/
filemenu.add(saveitem);
jmenuitemloaditem=newjmenuitem("打开");
loaditem.addactionlistener(
loadfile();
filemenu.
add(loaditem);
filemenu.addseparator();
jmenuitemexititem=newjmenuitem("退出");
exititem.addactionlistener(
system.exit(0);
filemenu.add(exititem);
bar.add(filemenu);
jmenucolormenu=newjmenu("颜色");
jmenuitemcoloritem=newjmenuitem("选择颜色");
coloritem.addactionlistener(
choosecolor();}
colormenu.add(coloritem);
bar.add(colormenu);
jmenustrokemenu=newjmenu("线条粗细");
jmenuitemstrokeitem=newjmenuitem("设置线条粗细");
strokeitem.addactionlistener(
setstroke();
strokemenu.add(strokeitem);
bar.add(strokemenu);
jmenuhelpmenu=newjmenu("帮助");
jmenuitemaboutitem=newjmenuitem("关于画板");
aboutitem.addactionlistener(
joptionpane.showmessagedialog(null,
"画图板说明"
joptionpane.information_message);
helpmenu.add(aboutitem);
bar.add(helpmenu);
items=newimageicon[names.length];
drawingarea=newdrawpanel();
choices=newjbutton[names.length];
buttonpanel=newjtoolbar(jtoolbar.vertical);
buttonpanel=newjtoolbar(jtoolbar.horizontal);
buttonhandleris=newbuttonhandler();
buttonhandler1handler1=newbuttonhandler1();
for(inti=0;i{items[in]=newimageicon(names[in]+".gif");choices[in]=newjbutton("",items[in]);choices[in].settooltiptext(tiptext[in]);buttonpanel.add(choices[in]);}for(inti=3;in{choices[in].addactionlistener(is);}choices[0].addactionlistener(newactionlistener(){publicvoidactionperformed(actionevent(e){newfile();}});选择[1]。addactionlistener(新的actionlistener(){publicvoidactionPerformed(ActionEvente){loadfile();}});选择[2]。addactionlistener(新的actionlistener(){publicvoidactionPerformed(ActionEvente){savefile();}});选择[选择],长度为3addactionlistener(handler1);选择[选择],长度为2addactionlistener(handler1);选择[选择]。length-1addactionlistener(handler1);风格=新的JComboBox(stylenames);(8)setmaximumrowcount风格;additemlistener(风格。新的itemlistener(){公共无效itemstatechanged(itemeventE){style1=stylenamesgetselectedindex()][风格;}});大胆=新的复选框(“粗体”);斜体=新的复选框(“斜体”);checkboxhandler钱德勒=新checkboxhandler();大胆additemlistener(Chandler);斜体。additemlistener(钱德勒);JPanelwordpanel=新jpanel();buttonpanel添加(粗体);buttonpanel添加(斜体);buttonpanel添加(风格);风格。setminimumsize(新的维度(50,20));风格。setmaximumsize(新的维度(100,20));容器C=getcontentpane();超级setjmenubar(杆);(buttonpanel,总和4.BorderLayout。北);(drawingarea,总和4.BorderLayout。中心);状态=新jlabel();总和4.(StatusBarBorderLayout。南);状态栏设置(“欢迎使用卿乐绘图画板→O(∩_∩)O”);createnewitem();setsize(宽度,高度);show();}公共课buttonhandler实现ActionListener{publicvoidactionPerformed(ActionEvente){为(j=3;J<选择。长度为3;j++){如果(如getsource()==选择[J]){currentchoice=J;createnewitem();repaint();}}}}公共课buttonhandler1实现ActionListener{publicvoidactionPerformed(ActionEvente){如果(如getsource()==选择[选择],长度为3){choosecolor();}如果(如getsource()==选择[选择],长度为2){setstroke();}如果(如getsource()==选择[选择]。length-1){JOptionPane。ShowMessageDialog(null),Pleaseclickthedrawingboardtoselectthelocationoftheinputtext","Hint",JOptionPane.INFORMATION_MESSAGE);CurrentChoice=14;CreateNewItem();Repaint();}}}If(e.getSource()==bold)If(e.getStateChange()==ItemEvent.SELECTED)F1=Font.BOLD;ElseF1=Font.PLAIN;If(e.getSource()==italic)If(e.getStateChange()==ItemEvent.SELECTED)F2=Font.ITALIC;ElseF2=Font.PLAIN;}}ClassDrawPanelextendsJPanel{PublicDrawPanel(){SetCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));SetBackground(Color.white);AddMouseListener(NewmouseA());AddMouseMotionListener(NewmouseB());}PublicvoidpaintComponent(Graphicsg){Super.paintComponent(g);Graphics2Dg2d=(Graphics2D)g;Intj=0;While(j<=index){Draw(G2D,itemList[j]);J++;}}Voiddraw(Graphics2DG2D,drawingsI){I.draw(G2D);}}VoidcreateNewItem(){if(currentChoice==14)DrawingArea.setCursor(Cursor.getPredefinedCursor(Cursor.TEXT_CURSOR));ElsedrawingArea.setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));Switch(currentChoice){Case3:ItemList[index]=newPencil();Break;Case4:ItemList[index]=newLine();Break;Case5:ItemList[index]=newRect();Break;Case6:ItemList[index]=newfillRect();Break;Case7:ItemList[index]=newOval();Break;Case8:ItemList[index]=newfillOval();Break;Case9:ItemList[index]=newCircle();Break;Case10:ItemList[index]=newfillCircle();Break;Case11:ItemList[index]=newRoundRect();Break;Case12:ItemList[index]=newfillRoundRect();Break;Case13:ItemList[index]=newRubber();Break;Case14:ItemList[index]=newWord();Break;}ItemList[index].type=currentChoice;ItemList[index].R=R;ItemList[index].G=G;ItemList[index].B=B;ItemList[index].stroke=stroke;}PublicvoidchooseColor(){Color=JColorChooser.showDialog(QingDrawPad.this),"Pleasechooseacolor",color;R=颜色。getred();G=getgreen()颜色;Bgetblue()颜色;自行设计[索引]。r=R;自行设计[索引]G=G;[索引]ITEMLIST。B=B;}公共无效setstroke(){输入的字符串;输入=JOptionPane。showinputdialog(“请输入一个浮点型线条粗细值(>0)”);行程=浮parseFloat(输入);[索引]自行设计行程=行程;}公共无效savefile(){档案选择程式=新jfilechooser()JFileChooser;然后在fileChooser.setfileselectionmode(文件对话框。files_only);int结果=然后在fileChooser.showsavedialog(本);如果(结果==文件对话框。cancel_option)返回;文件的文件名,然后在fileChooser.getselectedfile();canwrite()文件名;如果(文件名==null||文件名。getname()。等于(“”))JOptionPane。showmessagedialog(档案选择程式,“文件名无效”,“文件名无效”,JOptionPaneerror_message);别的{尝试{delete()文件名;FileOutputStreamFOS=新的输出(文件名);输出为新的对象(FOS);图纸的记录;输出writeint(指数);对于(int=i0;i<索引;i++){图P=itemlist[我];输出的writeObject(P);输出。flush();}()输出;FOS。();}赶上(IOExceptionIOE){printstacktrace()IOE;}}}公共无效loadfile(){档案选择程式=新jfilechooser()JFileChooser;然后在fileChooser.setfileselectionmode(文件对话框。files_only);int结果=然后在fileChooser.showMessageDialog(本);如果(结果==文件对话框。cancel_option)返回;文件的文件名,然后在fileChooser.getselectedfile();canread()文件名;如果(文件名==null||文件名。getname()。等于(“”))JOptionPane。showmessagedialog(档案选择程式,“文件名无效”,“文件名无效”,JOptionPaneerror_message);别的{尝试{FileInputStreamFIS=新的输入(文件名);输入=新对象输入流(FIS);图inputrecord;国际countnumber=0;countnumber=输入。readint();为(指数=0;指数小于countnumber;指数++){inputrecord=(图)readobject()输入;[索引]=inputrecord自行设计;}createnewitem();()输入;repaint();}赶上(个endoffileexception){JOptionPane。ShowMessageDialog(this,"there'snomorerecordsinthefile","JOptionPane.ERROR_MESSAGE";}Catch(ClassNotFoundExceptionclassNotFoundException){JOptionPane.showMessageDialog(this,""cannotcreateobjects)","JOptionPane.ERROR_MESSAGE";}Catch(IOExceptionioException){JOptionPane.showMessageDialog(this)errorreadingdatafromfile","JOptionPane.ERROR_MESSAGE";}}}PublicvoidnewFile(){Index=0;CurrentChoice=3;Color=Color.black;Stroke=1.0f;CreateNewItem();Repaint();}Publicstaticvoidmain(Stringargs[]){{tryUIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());}Catch(ExceptionE){}QingDrawPadnewPad=newQingDrawPad();NewPad.addWindowListenerNewWindowAdapter(){PublicvoidwindowClosing(WindowEventE){System.exit(0);}});}}
items[in]=newimageicon(names[in]+".gif");
choices[in]=newjbutton("",items[in]);
choices[in].settooltiptext(tiptext[in]);
buttonpanel.add(choices[in]);
for(inti=3;in{choices[in].addactionlistener(is);}choices[0].addactionlistener(newactionlistener(){publicvoidactionperformed(actionevent(e){newfile();}});选择[1]。addactionlistener(新的actionlistener(){publicvoidactionPerformed(ActionEvente){loadfile();}});选择[2]。addactionlistener(新的actionlistener(){publicvoidactionPerformed(ActionEvente){savefile();}});选择[选择],长度为3addactionlistener(handler1);选择[选择],长度为2addactionlistener(handler1);选择[选择]。length-1addactionlistener(handler1);风格=新的JComboBox(stylenames);(8)setmaximumrowcount风格;additemlistener(风格。新的itemlistener(){公共无效itemstatechanged(itemeventE){style1=stylenamesgetselectedindex()][风格;}});大胆=新的复选框(“粗体”);斜体=新的复选框(“斜体”);checkboxhandler钱德勒=新checkboxhandler();大胆additemlistener(Chandler);斜体。additemlistener(钱德勒);JPanelwordpanel=新jpanel();buttonpanel添加(粗体);buttonpanel添加(斜体);buttonpanel添加(风格);风格。setminimumsize(新的维度(50,20));风格。setmaximumsize(新的维度(100,20));容器C=getcontentpane();超级setjmenubar(杆);(buttonpanel,总和4.BorderLayout。北);(drawingarea,总和4.BorderLayout。中心);状态=新jlabel();总和4.(StatusBarBorderLayout。南);状态栏设置(“欢迎使用卿乐绘图画板→O(∩_∩)O”);createnewitem();setsize(宽度,高度);show();}公共课buttonhandler实现ActionListener{publicvoidactionPerformed(ActionEvente){为(j=3;J<选择。长度为3;j++){如果(如getsource()==选择[J]){currentchoice=J;createnewitem();repaint();}}}}公共课buttonhandler1实现ActionListener{publicvoidactionPerformed(ActionEvente){如果(如getsource()==选择[选择],长度为3){choosecolor();}如果(如getsource()==选择[选择],长度为2){setstroke();}如果(如getsource()==选择[选择]。length-1){JOptionPane。ShowMessageDialog(null),Pleaseclickthedrawingboardtoselectthelocationoftheinputtext","Hint",JOptionPane.INFORMATION_MESSAGE);CurrentChoice=14;CreateNewItem();Repaint();}}}If(e.getSource()==bold)If(e.getStateChange()==ItemEvent.SELECTED)F1=Font.BOLD;ElseF1=Font.PLAIN;If(e.getSource()==italic)If(e.getStateChange()==ItemEvent.SELECTED)F2=Font.ITALIC;ElseF2=Font.PLAIN;}}ClassDrawPanelextendsJPanel{PublicDrawPanel(){SetCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));SetBackground(Color.white);AddMouseListener(NewmouseA());AddMouseMotionListener(NewmouseB());}PublicvoidpaintComponent(Graphicsg){Super.paintComponent(g);Graphics2Dg2d=(Graphics2D)g;Intj=0;While(j<=index){Draw(G2D,itemList[j]);J++;}}Voiddraw(Graphics2DG2D,drawingsI){I.draw(G2D);}}VoidcreateNewItem(){if(currentChoice==14)DrawingArea.setCursor(Cursor.getPredefinedCursor(Cursor.TEXT_CURSOR));ElsedrawingArea.setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));Switch(currentChoice){Case3:ItemList[index]=newPencil();Break;Case4:ItemList[index]=newLine();Break;Case5:ItemList[index]=newRect();Break;Case6:ItemList[index]=newfillRect();Break;Case7:ItemList[index]=newOval();Break;Case8:ItemList[index]=newfillOval();Break;Case9:ItemList[index]=newCircle();Break;Case10:ItemList[index]=newfillCircle();Break;Case11:ItemList[index]=newRoundRect();Break;Case12:ItemList[index]=newfillRoundRect();Break;Case13:ItemList[index]=newRubber();Break;Case14:ItemList[index]=newWord();Break;}ItemList[index].type=currentChoice;ItemList[index].R=R;ItemList[index].G=G;ItemList[index].B=B;ItemList[index].stroke=stroke;}PublicvoidchooseColor(){Color=JColorChooser.showDialog(QingDrawPad.this),"Pleasechooseacolor",color;R=颜色。getred();G=getgreen()颜色;Bgetblue()颜色;自行设计[索引]。r=R;自行设计[索引]G=G;[索引]ITEMLIST。B=B;}公共无效setstroke(){输入的字符串;输入=JOptionPane。showinputdialog(“请输入一个浮点型线条粗细值(>0)”);行程=浮parseFloat(输入);[索引]自行设计行程=行程;}公共无效savefile(){档案选择程式=新jfilechooser()JFileChooser;然后在fileChooser.setfileselectionmode(文件对话框。files_only);int结果=然后在fileChooser.showsavedialog(本);如果(结果==文件对话框。cancel_option)返回;文件的文件名,然后在fileChooser.getselectedfile();canwrite()文件名;如果(文件名==null||文件名。getname()。等于(“”))JOptionPane。showmessagedialog(档案选择程式,“文件名无效”,“文件名无效”,JOptionPaneerror_message);别的{尝试{delete()文件名;FileOutputStreamFOS=新的输出(文件名);输出为新的对象(FOS);图纸的记录;输出writeint(指数);对于(int=i0;i<索引;i++){图P=itemlist[我];输出的writeObject(P);输出。flush();}()输出;FOS。();}赶上(IOExceptionIOE){printstacktrace()IOE;}}}公共无效loadfile(){档案选择程式=新jfilechooser()JFileChooser;然后在fileChooser.setfileselectionmode(文件对话框。files_only);int结果=然后在fileChooser.showMessageDialog(本);如果(结果==文件对话框。cancel_option)返回;文件的文件名,然后在fileChooser.getselectedfile();canread()文件名;如果(文件名==null||文件名。getname()。等于(“”))JOptionPane。showmessagedialog(档案选择程式,“文件名无效”,“文件名无效”,JOptionPaneerror_message);别的{尝试{FileInputStreamFIS=新的输入(文件名);输入=新对象输入流(FIS);图inputrecord;国际countnumber=0;countnumber=输入。readint();为(指数=0;指数小于countnumber;指数++){inputrecord=(图)readobject()输入;[索引]=inputrecord自行设计;}createnewitem();()输入;repaint();}赶上(个endoffileexception){JOptionPane。ShowMessageDialog(this,"there'snomorerecordsinthefile","JOptionPane.ERROR_MESSAGE";}Catch(ClassNotFoundExceptionclassNotFoundException){JOptionPane.showMessageDialog(this,""cannotcreateobjects)","JOptionPane.ERROR_MESSAGE";}Catch(IOExceptionioException){JOptionPane.showMessageDialog(this)errorreadingdatafromfile","JOptionPane.ERROR_MESSAGE";}}}PublicvoidnewFile(){Index=0;CurrentChoice=3;Color=Color.black;Stroke=1.0f;CreateNewItem();Repaint();}Publicstaticvoidmain(Stringargs[]){{tryUIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());}Catch(ExceptionE){}QingDrawPadnewPad=newQingDrawPad();NewPad.addWindowListenerNewWindowAdapter(){PublicvoidwindowClosing(WindowEventE){System.exit(0);}});}}
choices[in].addactionlistener(is);
choices[0].addactionlistener(
newfile();
);
选择[1]。
addactionlistener(
新的actionlistener(){
publicvoidactionPerformed(ActionEvente)
loadfile();
选择[2]。
savefile();
选择[选择],长度为3addactionlistener(handler1);
选择[选择],长度为2addactionlistener(handler1);
选择[选择]。
length-1addactionlistener(handler1);
风格=新的JComboBox(stylenames);
(8)setmaximumrowcount风格;
additemlistener(风格。
新的itemlistener(){
公共无效itemstatechanged(itemeventE)
style1=stylenamesgetselectedindex()][风格;
大胆=新的复选框(“粗体”);
斜体=新的复选框(“斜体”);
checkboxhandler钱德勒=新checkboxhandler();
大胆additemlistener(Chandler);
斜体。
additemlistener(钱德勒);
JPanelwordpanel=新jpanel();
buttonpanel添加(粗体);
buttonpanel添加(斜体);
buttonpanel添加(风格);
风格。
setminimumsize(新的维度(50,20));
setmaximumsize(新的维度(100,20));
容器C=getcontentpane();
超级setjmenubar(杆);
(buttonpanel,总和4.BorderLayout。
北);
(drawingarea,总和4.BorderLayout。
中心);
状态=新jlabel();
总和4.(StatusBarBorderLayout。
南);
状态栏设置(“欢迎使用卿乐绘图画板→O(∩_∩)O”);
createnewitem();
setsize(宽度,高度);
show();
公共课buttonhandler实现ActionListener
为(j=3;J<选择。
长度为3;j++)
如果(如getsource()==选择[J])
{currentchoice=J;
repaint();}
公共课buttonhandler1实现ActionListener
如果(如getsource()==选择[选择],长度为3)
{choosecolor();}
如果(如getsource()==选择[选择],长度为2)
{setstroke();}
如果(如getsource()==选择[选择]。
length-1)
{JOptionPane。
ShowMessageDialog(null),
Pleaseclickthedrawingboardtoselectthelocationoftheinputtext",
"Hint",JOptionPane.INFORMATION_MESSAGE);
CurrentChoice=14;
CreateNewItem();
Repaint();
If(e.getSource()==bold)
If(e.getStateChange()==ItemEvent.SELECTED)
F1=Font.BOLD;
Else
F1=Font.PLAIN;
If(e.getSource()==italic)
F2=Font.ITALIC;
F2=Font.PLAIN;
ClassDrawPanelextendsJPanel
PublicDrawPanel()
SetCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
SetBackground(Color.white);
AddMouseListener(NewmouseA());
AddMouseMotionListener(NewmouseB());
PublicvoidpaintComponent(Graphicsg)
Super.paintComponent(g);
Graphics2Dg2d=(Graphics2D)g;
Intj=0;
While(j<=index)
Draw(G2D,itemList[j]);
J++;
Voiddraw(Graphics2DG2D,drawingsI)
I.draw(G2D);}
VoidcreateNewItem()
{if(currentChoice==14)
DrawingArea.setCursor(Cursor.getPredefinedCursor(Cursor.TEXT_CURSOR));
ElsedrawingArea.setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
Switch(currentChoice)
Case3:
ItemList[index]=newPencil();
Break;
Case4:
ItemList[index]=newLine();
Case5:
ItemList[index]=newRect();
Case6:
ItemList[index]=newfillRect();
Case7:
ItemList[index]=newOval();
Case8:
ItemList[index]=newfillOval();
Case9:
ItemList[index]=newCircle();
Case10:
ItemList[index]=newfillCircle();
Case11:
ItemList[index]=newRoundRect();
Case12:
ItemList[index]=newfillRoundRect();
Case13:
ItemList[index]=newRubber();
Case14:
ItemList[index]=newWord();
ItemList[index].type=currentChoice;
ItemList[index].R=R;
ItemList[index].G=G;
ItemList[index].B=B;
ItemList[index].stroke=stroke;
PublicvoidchooseColor()
Color=JColorChooser.showDialog(QingDrawPad.this),
"Pleasechooseacolor",color;
R=颜色。
getred();
G=getgreen()颜色;
Bgetblue()颜色;
自行设计[索引]。
r=R;
自行设计[索引]G=G;
[索引]ITEMLIST。
B=B;
公共无效setstroke()
输入的字符串;
输入=JOptionPane。
showinputdialog(
“请输入一个浮点型线条粗细值(>0)”);
行程=浮parseFloat(输入);
[索引]自行设计行程=行程;
公共无效savefile()
档案选择程式=新jfilechooser()JFileChooser;
然后在fileChooser.setfileselectionmode(文件对话框。
files_only);
int结果=然后在fileChooser.showsavedialog(本);
如果(结果==文件对话框。
cancel_option)
返回;
文件的文件名,然后在fileChooser.getselectedfile();
canwrite()文件名;
如果(文件名==null||文件名。
getname()。
等于(“”))
JOptionPane。
showmessagedialog(档案选择程式,“文件名无效”,
“文件名无效”,JOptionPaneerror_message);
别的{
尝试{
delete()文件名;
FileOutputStreamFOS=新的输出(文件名);
输出为新的对象(FOS);
图纸的记录;
输出writeint(指数);
对于(int=i0;i<索引;i++)
图P=itemlist[我];
输出的writeObject(P);
输出。
flush();}
()输出;
FOS。
();
赶上(IOExceptionIOE)
printstacktrace()IOE;
公共无效loadfile()
int结果=然后在fileChooser.showMessageDialog(本);
canread()文件名;
FileInputStreamFIS=新的输入(文件名);
输入=新对象输入流(FIS);
图inputrecord;
国际countnumber=0;
countnumber=输入。
readint();
为(指数=0;指数小于countnumber;指数++)
inputrecord=(图)readobject()输入;
[索引]=inputrecord自行设计;
()输入;
repaint();
赶上(个endoffileexception){
ShowMessageDialog(this,"there'snomorerecordsinthefile",
"JOptionPane.ERROR_MESSAGE";
Catch(ClassNotFoundExceptionclassNotFoundException){
JOptionPane.showMessageDialog(this,""cannotcreateobjects)",
Catch(IOExceptionioException){
JOptionPane.showMessageDialog(this)errorreadingdatafromfile",
PublicvoidnewFile()
Index=0;
CurrentChoice=3;
Color=Color.black;
Stroke=1.0f;
Publicstaticvoidmain(Stringargs[])
{{try
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
Catch(ExceptionE){}
QingDrawPadnewPad=newQingDrawPad();
NewPad.addWindowListener
NewWindowAdapter(){
PublicvoidwindowClosing(WindowEventE)
{System.exit(0);}});
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