讲义说明教案java宁

AWTAWTswingGUI类库。swingawt布局绘比如按钮，文本框等ContainerComponent的子类，容器本身也是一个组件。AWTpackagecom.lx.test1;importjava.awt.Frame;publicclassTest1{publicstaticvoidmain(String[]args){Framef=newFrame();f.setBounds(50,50,400,300);}}packageimportjava.awt.Button;importjava.awt.Frame;importjava.awt.Panel;importjava.awt.TextField;publicclassTest2publicstaticvoidmain(String[]args){Framef=newFrame();Panelp=newPanel();p.add(newTextField(10));p.add(newButton("ok"));f.setBounds(50,50,400,300);}}像流水一样向某方向自动排列，遇到折回。默认是向右packageimportimportstaticpublicclassTestFlowLayoutpublicstaticvoidmain(String[]args){Framef=newFrame("测试窗口");f.setLayout(newFlowLayout(LEFT205));for(inti=0;i<20;i++){f.add(newButton("按钮}}}5个区域：东西南北中。packageimportimportstaticpublicclassTestFlowLayoutpublicstaticvoidmain(String[]args){Framef=newFrame("测试窗口");f.setLayout(newFlowLayout(LEFT205));for(inti=0;i<20;i++){f.add(newButton("按钮}}}packageimportimportstaticpublicclasspublicstaticvoidmain(String[]{Framef=newFrame("测试窗口");f.setLayout(newBorderLayout(305));f.add(newButton("南"),SOUTH);f.add(newButton("北Panelp=newPanel();p.add(newTextField(20));p.add(newButton("OK"));f.add(newButton("东}}packageimportimportpublicclassTestCardLayout{FramefnewFrame("测试窗口");String[names第一张第二张第三张第四张第五张Panelpl=newPanel();CardLayoutc=newCardLayout();publicvoidinit(){for(inti=0;i<names.length;i++)pl.add(names[i],new}Panelp=newButtonprevious=newButton("上一张");previous.addActionListener(newActionListener(publicvoidactionPerformed(ActionEvente){}Buttonnext=newButton("下一张");next.addActionListener(newActionListener(publicvoidactionPerformed(ActionEvente){}Buttonfirst=newButton("第一张");first.addActionListener(newActionListener(publicvoidactionPerformed(ActionEvente){}Buttonlast=newButton("最后一张");last.addActionListener(newActionListener(publicvoidactionPerformed(ActionEvente){}控制根据CardButtonthird=newButton("第三张");third.addActionListener(newActionListener(publicvoidactionPerformed(ActionEventec.show(pl,"第三张");}f.add(p,BorderLayout.SOUTH);}publicstaticvoidmain(String[]args)new}}packagecom.lx.test2;importjava.awt.*;importjavax.swing.*;publicclassprivateFramefnewFrame("测试publicvoid{f.setLayout(newBoxLayout(fBoxLayout.Y_AXIS));f.add(newButton("第一个按钮"));f.add(newButton("第二个按钮}publicstaticvoidmain(String[]args)new}}另外，BoxLayoutBox容器一起使用，Boxpackagecom.lx.test2;importjava.awt.*;importpublicclassprivateFramefnewFrame("测试privateBoxhorizontal=privateBoxvertical=publicvoid{horizontal.add(newButton("水平按钮一"));horizontal.add(newButton("水平按钮二"));vertical.add(newButton("垂直按钮一"));vertical.add(newButton("垂直按钮二"));f.add(horizontal,BorderLayout.NORTH);}publicstaticvoidmain(String[]args)new}}5 创建一个水平的Glue createVerticalGlue创建一个垂直的Glue可以在两个方向同时拉伸间距createHorizontalStrut(intwidth)创建一个指定宽度水平的Strut可以在垂直方向上拉伸间距createVerticalStrut(intheight)创建一个指定高度的垂直Strut createRigidArea(Dimensiond)创建指定宽度和高度的RigidArea packageimportimportpublicclassTestBoxSpaceprivateFramefnewFrame("测试定义水平摆放组件的BoxprivateBoxhorizontal=定义垂直摆放组件的BoxprivateBoxvertical=publicvoidinit()horizontal.add(newButton("水平按钮一"));horizontal.add(newButton("水平按钮二"));horizontal.add(newButton("水平按钮三"));vertical.add(newButton("垂直按钮一"));vertical.add(newButton("垂直按钮二"));vertical.add(newButton("垂直按钮三"));f.add(horizontal,BorderLayout.NORTH);}publicstaticvoidmain(String[]args)new}}packageimportimportpublicclass ponent{FramefnewFrame("测试");ButtonoknewButton("确认CheckboxGroupcbg=new//CheckboxmalenewCheckbox("男cbg//CheckboxfemalenewCheckbox("女cbg//CheckboxmarriednewCheckbox("是否已婚？ChoicecolorChooser=newListcolorList=newList(6,TextAreata=newTextArea(5,定义一个50TextFieldname=newpublicvoidinit(){创建一个装载了文本框、按钮的PanelPanelbottom=newPanel();f.add(bottom,创建一个装载了下拉选择框、三个Checkbox的PanelPanelcheckPanel=newPanel();创建一个垂直排列组件的Box，盛装多行文本域、PanelBoxtopLeft=Box.createVerticalBox();创建一个垂直排列组件的Box，盛装topLeft、colorListBoxtop=Box.createHorizontalBox();将topBox容器添加到窗口的中间}publicstaticvoidmain(String[]args) }}window类的子类，是一个容器，与普通窗口的用法完全一样。它的构造方法有三个参数分别是packageimportimportpublicclassTestDialog{FramefnewFrame("测试");Dialogd1=newDialog(f,"模式框",Dialogd2=newDialog(f,"非模式框",false);Buttonb1=newButton("打开模式框");Buttonb2=newButton("打开非模式框publicvoidinit(){d1.setBounds(20,30,300,d2.setBounds(20,30,300,400);b1.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){}b2.addActionListener(newActionListener()publicvoidactionPerformed(ActionEvente){}f.add(b2,BorderLayout.SOUTH);}publicstaticvoidmain(String[]args)new}}packageimportimportpublicclassTestFileDialogFramefnewFrame("测试FileDialogd1newFileDialog(f选择需要打开文件FileDialog.LOAD);FileDialogd2=newFileDialog(f,"选择保存文件的路径",Buttonb1newButton("打开文件");Buttonb2newButton("保存文件publicvoidinit()b1.addActionListener(newActionListener()publicvoidactionPerformed(ActionEvente){System.out.println(d1.getDirectory()+d1.getFile());}b2.addActionListener(newActionListener()publicvoidactionPerformed(ActionEvente){System.out.println(d2.getDirectory()+d2.getFile());}f.add(b2,BorderLayout.SOUTH);}publicstaticvoidmain(String[]args)new}} Event

J

Event PopupEventPopup

底层式，如：利用innerclass的类方法classimplementsEventListener现(Implement)!我们把区分成是由Swing或是AWT所Swing caretUpdate(CaretEvente)editingCanceled(ChangeEventeditingStopped(ChangeEventstateChanged(ChangeEvente)changedUpdate(EventinsertUpdate(EventremoveUpdate(EventhyperlinkUpdate(HyperlinkEvente)contentsChanged(ListdataEvente)intervalAdded(ListDataEvente)intervalRemoved(ListDataEvente)valueChanged(ListSelectionEvente)DragMouseDragged(DragMouseEvent DragMouseEventDragMouseExited(DragMouseEvente)DragMouseReleased(DragMouseEvente)KeyPressed(KeyEventKeyReleased(KeyEvente)KeyTyped(KeyEvente)Canceled(Evente)Deselected(Evente)Selected(Evente)popupCanceled(PopupEvente)eInvisible(PopupEvente)eVisible(PopupEvente)columnAdded(TableColumnModelEvente)columnMarginChanged(ChangeEvente)columnMoved(TableColumnModelEvente)columnRemoved(TableColumnModelEvente)columnSelectionChanged(ListSelectionEvente)tableChanged(TableModelEventtreeCollapsed(TreeExpansionEventtreeExpanded(TreeExpansionEventtreeNodesChanged(TreeModelEvente)treeNodesInserted(TreeModelEvente)treeNodesRemoved(TreeModelEvente)treeStructureChanged(TreeModelEvente)valueChanged(TreeSelectionEvente)treeWillCollapse(TreeExpansionEventevent)treeWillExpand(TreeExpansionEventundoableEditHappened(UndoableEditEvente)AWT actionPerformed(ActionEvente)adjustmentValueChanged(AdjustmentEvente)componentHidden(ComponentEventcomponentMoved(ComponentEvente)componentResized(ComponentEvente)componentShown(ComponentEvente)componentAdded(ContainerEvente)componentRemoved(ContainerEventfocusGained(FocusEvente)focusLost(FocusEventitemStateChanged(ItemEvente)keyPressed(KeyEventkeyReleased(KeyEvente)keyTyped(KeyEvente)mouseClicked(MouseEventmouseEntered(MouseEvente)mouseExited(MouseEvente)mousePressed(MouseEvente)mouseReleased(MouseEventmouseDragged(MouseEvente)mouseMoved(MouseEventwindowActivated(WindowEvente)windowClosed(WindowEvente)windowClosing(WindowEventwindowDeactivated(WindowEvente)windowDeiconified(WindowEvente)windowIconified(WindowEvente)windowOpened(WindowEventAdapter 在java中提供两个方法让你知道到底是哪个组件触发了，那就是getSource()与 importjava.awt.*;importjava.awt.event.*;importjavax.swing.*;publicclassEventDemo5extendsWindowAdapterimplements{JButtonb1=JButtonb2=public{JFramef=newJFrame("EventDemo5");ContainercontentPanef.getContentPane();contentPane.setLayout(newGridLayout(1,2));b1=newJButton("按我有声音喔");b2newJButton("按我可开新窗口");}publicvoidactionPerformed(ActionEvent{{JFramenewFnewJFrame("新窗口");}}publicvoidwindowClosing(WindowEvent{}publicstaticvoidmain(String{new}}importjava.awt.*;importjava.awt.event.*;importjavax.swing.*;publicclassEventDemo6extendsWindowAdapterimplements{JButtonb1=JButtonb2=public{JFramef=newJFrame("EventDemo6");ContainercontentPanef.getContentPane();contentPane.setLayout(newGridLayout(1,2));b1=newJButton("按我有声音喔");b2newJButton("按我可开新窗口");}publicvoidactionPerformed(ActionEvent{ 方返回按钮上的文字字符串 {JFramenewFnewJFrame("新窗口");}}publicvoidwindowClosing(WindowEvent{}publicstaticvoidmain(String{new}}MouseListenermouseClicked(MouseEventmouseEntered(MouseEvente)mouseExited(MouseEvente)mousePressed(MouseEvente)mouseReleased(MouseEventimportjava.awt.*;importjava.awt.event.*;importjavax.swing.*;/*WindowAdapterMouseListener*因此须把MouseListener中的5个方法都实现，如果不想实*可用内部类的方法编写处理程序publicclassMouseDemo1extendsWindowAdapterimplementsMouseListener{JFramef=null;JButtonJLabelpublicf=newContainercontentPane=f.getContentPane();contentPane.setLayout(newGridLayout(2,1));b1=newJButton("按钮");label=newJLabel("起始状态，还没有鼠标",JLabel.CENTER);}publicvoidmousePressed(MouseEvente){}publicvoidmouseReleased(MouseEvente){}publicvoidmouseEntered(MouseEvente){}publicvoidmouseExited(MouseEvente){}publicvoidmouseClicked(MouseEvente){}publicvoidwindowClosing(WindowEvente){}publicstaticvoidmain(String[]args){newMouseDemo1();}}mouseDragged(MouseEvente)mouseMoved(MouseEventimportjava.awt.*;importjava.awt.event.*;import/*implementsMouseListenerpublicclassMouseDemo3extendsJFrameimplementsintflag;//flag=1MouseMoved,flag=2MouseDraggedintx=0;intintstartx,starty,endx,endy;//起始坐标与终点坐标publicMouseDemo3(){ContainercontentPane=getContentPane();newpublicvoidwindowClosing(WindowEvente){}}}publicvoidmousePressed(MouseEvente){}publicvoidmouseReleased(MouseEvente){}publicvoidmouseEntered(MouseEvent}publicvoidmouseExited(MouseEvent}publicvoidmouseClicked(MouseEvent}publicvoidmouseMoved(MouseEvente){}publicvoidmouseDragged(MouseEvente){}publicvoidupdate(Graphicsg){}publicvoidpaint(Graphicsg){if(flag==1){}if}}publicstaticvoidmain(String[]args){newMouseDemo3();}}键盘处理keyPressed(KeyEventkeyReleased(KeyEvente)keyTyped(KeyEvente)importjava.awt.*;importjava.awt.event.*;importjavax.swing.*;publicclassKeyDemoextendsKeyAdapterimplementsActionListener{JFramef=null;JLabellabel=null;JTextFieldtField=null;StringkeyString="";publicf=newContainercontentPane=f.getContentPane();contentPane.setLayout(newGridLayout(3,1));label=newJLabel();tField=newJTextField();JButtonb=newJButton("清除");newpublicvoidwindowClosing(WindowEvente){}}}publicvoidactionPerformed(ActionEvente){}publicvoidkeyTyped(KeyEvente){charc=e.getKeyChar();/*getKeyChar()的用法*/if(c=='o'){JFramenewF=newJFrame("新窗口");}}publicstaticvoidmain(String[]args){newKeyDemo();}}getKeyCode()getKeyModifiersText(intmodifiers).键盘上每一个按钮都有对应码(Code),可用来查知keyTyped()算是处理比较keyTyped()keyboadindependent,因为不同的键盘可能有不WindowsU.S.keyboardwindowsFrenchkeyboardgetKeyCode()keyPressedkeyReleased()方法中才会有效，因为这两个方法是处理比较低层的方法。getKeyModifiersText()方法可返回修饰键的字符串，如返回“Shift”字符串或是“Ctrl+Shift”packageimportjava.awt.Color;importjava.awt.FlowLayout;importimportimportimportjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjava.awt.event.WindowAdapter;importjava.awt.event.WindowEvent;importjavax.swing.JButton;importjavax.swing.JDialog;importjavax.swing.JFrame;importjavax.swing.JTextField;import{JFramelist;JTextFieldshow;JButtonbc,c,ce,ab,jia,jian,cheng,chu,equ,point,sqrt,ds,JButtonb[newJButton[10]按钮数组，数字键doublesum=0,inti=0,j=0,p=0,l,action;JDialogabout;finalintslength30publicvoiddisp()listnewJFrame("简易计算器");list.setSize(360,230);list.setLocation(380,260);list.setLayout(newFlowLayout(FlowLayout.CENTER));show=newJTextField(31);PaneldispTop=newPanel();dispTop.setLayout(newGridLayout(1,4,3,3));bc=newJButton("Back ce=newJButton("CE");c=newJButton("C");ab=newJButton("About");aboutnewJDialog(list关于计算器Labelct=newLabel("http://w ",1);about.add(ct,"Center");about.setSize(200,about.setLocation(500,300);PaneldispMain=newPanel();dispMain.setLayout(newGridLayout(1,2,10,10));PaneldispLeft=newPanel();dispLeft.setLayout(newGridLayout(4,3,3,3));PaneldispRight=newPanel();dispRight.setLayout(newGridLayout(4,2,3,3));for(l=9;l>=0;l--){b[l]=newJButton(String.valueOf(l));}jia=newJButton("+");jian=newJButton("-");cheng=newJButton("*");chu=newJButton("/");equ=newJButton("=");point=newJButton(".");zf=newJButton("+/-sqrt=newJButton("sqrt");bfh=newJButton("%");ds=newJButton("1/x");}publicvoidactionPerformed(ActionEvente)getValue=if(e.getSource(jiaif(j==0)sum=}elseif(action==1){sum+=getValue;}p=i=action=elseif(e.getSource(jianif(j==0)sum=}elseif(action==2){sum-=getValue;}p=i=action=elseif(e.getSource(chengif(j==0)sum=}elseif(action==3){sum*=getValue;}p=i=action=elseif(e.getSource(chuif(j==sum=elseif(action==4){sum/=getValue;}p=i=action=elseif(e.getSource(equ等号,switch(action)caseshow.setText(String.valueOf(sum+=case2:show.setText(String.valueOf(sum-=case3:show.setText(String.valueOf(sum*=caseshow.setText(String.valueOf(sum/=

i=j=action=elseif(e.getSource(point小数点,if(p==show.setText(show.getText()+ p=1;elseif(e.getSource(c||e.getSource(cei=j=p=sum=action=0;elseif(e.getSource(bcStrings=if(s.length()>1)for(l0ls.length(1l++按一下,chara=s.charAt(l);show.setText(show.getText()+a);}}elseif(e.getSource(abelseif(e.getSource(sqrt开2次sum=Math.sqrt(getValue);i=elseif(e.getSource(dssum=1/getValue;i=elseif(e.getSource(bfhsum=getValue/100;i=elseif(e.getSource(zf正负号切换,Strings=chara=if(a=='-')for(l1ls.length()l++show.setText(show.getText()+}elseif(getValue0show.setText("-"+}}for(l0l10l++0~9if(e.getSource()==b[l])if(i==Strings=show.getText();if(s.length()<slength) if(e.getSource()==b[0]&&getValue==0&&p==0)if(e.getSource()!=b[0]&&getValue==0&&p==0) i++;/i}}}publicvoidsetSum(把计算结果显示出来Strings=show.getText();chara=s.charAt((s.length()-charb=s.charAt((s.length()-if(a'0&&b如果是整数,则去掉后面的小数点和0}}publicvoidwindowClosing(WindowEvente)if(e.getSource()==about)elseif(e.getSource()==list)}publicstaticvoidmain(Stringargs[])new}} 菜单 Item ItemShortcutpackageimportimportpublicclass privateFramefnewFrame("测试 Barmb=new file=new edit ItemnewItem=new ItemsaveItem= 创建exitItemCtrl+XItemexitItem Item("退出 ItemautoWrap=newCheckbox ItemcopyItem=new ItempasteItem format 创建commentItemCtrl+Shift+ItemcommentItem=new Item("注释",new KeyEvent.VK_SLASH,true));ItemcancelItem privateTextAreata=newTextArea(6,publicvoidinit()//以内部类的形式创建菜单 Listener=newActionListener()publicvoidactionPerformed(ActionEventeStringcmd= ta.append("单击cmd菜单"\n");if(cmd.equals("退出")){}}//为commentItem、exitItem两个菜单项添加了器。 为file菜单添加菜单项为edit使用addSeparator方法来添加菜单分隔线//为format菜单添加菜单项//使用添加new ////为f //以内部类的形式来创建器对f.addWindowListener(newWindowAdapter()publicvoidwindowClosing(WindowEvente}}publicstaticvoidmain(String[]args)new }}packageimportimportpublicclass privateTextAreata=newTextArea(4,privateFramef=newFrame("测试"); pop=newPopup ItemautoWrap=newCheckbox ItemcopyItem=new ItempasteItem format 创建commentItemCtrl+Shift+ItemcommentItem=new Item("注释",new KeyEvent.VK_SLASH,true));ItemcancelItem publicvoidinit()//以内部类的形式创建菜单 Listener=newActionListener()publicvoidactionPerformed(ActionEventeStringcmd= ta.append("单击cmd菜单"\n");if(cmd.equals("退出")){}} 为pop使用addSeparator方法来添加菜单分隔线//为format菜单添加菜单项//使用添加new //finalPanelp=newPanel();p.setPreferredSize(newDimension(300,160));//向p窗口中添加 对p.addMouseListener(newMouseAdapter()publicvoidmouseReleased(MouseEvente)if(e.isPopupTrigger()){pop.show(p,e.getX(),e.getY());}}f.add(ta,BorderLayout.NORTH);f.addWindowListener(newWindowAdapter(){publicvoidwindowClosing(WindowEvente){}}publicstaticvoidmain(String[]args)new }}componentpaint(Graphicsg)其实，repaint调用 Graphics类，有这个类的对象就可以画图。new出来吗？paintupdateBufferedImage也可以获得画笔。Canvas类Jpanelpaintrepaint方法即可。packageimportjava.awt.*;importjava.awt.event.*;importpublicclassSimpleDrawprivatefinalStringRECT_SHAPE=privatefinalStringOVAL_SHAPE="oval";privateFramef=newFrame("简单绘图");privateButtonrectnewButton("绘制矩形");privateButtonovalnewButton("绘制圆形");privateMyCanvasdrawArea=newMyCanvas();//privateStringshape=publicvoidinit(){Panelp=newPanel();rect.addActionListener(newActionListener()publicvoidactionPerformed(ActionEvente)设置shape属性为RECT_SHAPEshape=RECT_SHAPE;//}oval.addActionListener(newActionListener()publicvoidactionPerformed(ActionEvente)设置shape属性为OVAL_SHAPEshape=OVAL_SHAPE;//}drawArea.setPreferredSize(newDimension(250,180));f.add(p,BorderLayout.SOUTH);}publicstaticvoidmain(String[]args)new}classMyCanvasextendsCanvas//publicvoidpaint(Graphicsg){Randomrand=newRandom();if(shape.equals(RECT_SHAPE))

g.setColor(newColor(220,100,g.drawRect(rand.nextInt(200),rand.nextInt(120),}

if(shape.equals(OVAL_SHAPE))g.setColor(newColor(80,100,g.fillOval(rand.nextInt(200),rand.nextInt(120),}}}}packageimportjava.awt.*;importjava.awt.event.*;importimportpublicclassPinBallprivatefinalintTABLE_WIDTH=privatefinalintTABLE_HEIGHT=privatefinalintRACKET_Y=privatefinalintRACKET_HEIGHT=privatefinalintRACKET_WIDTH=privatefinalintBALL_SIZE=16;privateFramefnewFrame("弹球游戏");Randomrand=newRandom();privateintySpeed=//privatedoublexyRate=rand.nextDouble()-privateintxSpeed=(int)(ySpeed*xyRate*ballX和ballYprivateintballX=rand.nextInt(200)+privateintballY=rand.nextInt(10)+racketXprivateintracketX=privateMyCanvastableArea=new//privateStringshape="";Timertimer;privatebooleanisLose=publicvoidinit()tableArea.setPreferredSize(newDimension(TABLE_WIDTH,//定义键盘KeyAdapterkeyProcessor=newKeyAdapter()publicvoidkeyPressed(KeyEventke)//if(ke.getKeyCode()==KeyEvent.VK_LEFT)if(racketX>0)racketX-=10;}if(ke.getKeyCode()==KeyEvent.VK_RIGHT)if(racketX<TABLE_WIDTH-racketX+=}}//为窗口和tableArea对象分别添加键盘器ActionListenertaskPerformer=newActionListener()publicvoidactionPerformed(ActionEventevt)if(ballX<=0||ballX>=TABLE_WIDTH-BALL_SIZE){xSpeed=-xSpeed;}//if(ballY>=RACKET_Y-&&(ballX<racketX||ballX>racketXRACKET_WIDTH))}

设置游戏是否结束的旗标为true。isLose=true;//elseif(ballY<=&&ballX<=+RACKET_WIDTH))ySpeed=-}//小球座标增加ballYySpeed;ballX}timer=newTimer(100,taskPerformer);}publicstaticvoidmain(String[]args)new}classMyCanvasextendsCanvas//publicvoidpaint(Graphicsg)if(isLose)g.setColor(newColor(255,0,0));g.setFont(newFont("Times"Font.BOLD30));g.drawString("游戏已结束！",50,200);}elseg.setColor(newColor(240,240,80));g.fillOval(ballX,ballY,BALL_SIZE,BALL_SIZE);g.setColor(newColor(80,80,200));g.fillRect(racketX,RACKET_Y,RACKET_WIDTH,}}}}packagecom.langsin.test4;importjava.awt.Color;publicclassHandDraw{privatefinalintAREA_WIDTH=privatefinalintAREA_HEIGHT=//下面的preX、preY保存了上一次鼠标拖动的鼠标座privateintpreX=-privateintpreY=- pop=new ItemredItem=new ItemgreenItem=new ItemblueItem=new //BufferedImageimage=newBufferedImage(AREA_WIDTH,AREA_HEIGHT,获取image对象的Graphicsg=privateJFramefnewJFrame("简单手绘程序privateDrawCanvasdrawArea=new//privateStringshape=privateColorforeColor=newColor(255,0,publicvoidinit()//定义右键菜单的器 Listener=newActionListener()publicvoidactionPerformed(ActionEvente)if( mand().equals("绿色foreColor=newColor(0,255,0);}if( mand().equals("红色foreColor=newColor(255,0,0);}if( mand().equals("蓝色foreColor=newColor(0,0,255);}}//为三个菜单添加器 将菜单项组合成右键菜单//g.fillRect(0,0,AREA_WIDTH,drawArea.setPreferredSize(newDimension(AREA_WIDTH,//鼠标移动动drawArea.addMouseMotionListener(newMouseMotionAdapter()//实现按下鼠标键并拖动的处理publicvoidmouseDragged(MouseEvente)如果preX和preY大于if(preX>0&&preY>0)//绘制从上一次鼠标拖动点到本次鼠标拖动点的线g.drawLine(preX,preY,e.getX(),}//将当前鼠标点的X、Y座标保存起preX=e.getX();preY=}

重绘drawArea//鼠标drawArea.addMouseListener(newMouseAdapter()//实现鼠标松开的处理publicvoidmouseReleased(MouseEvente)if(e.isPopupTrigger()){pop.show(drawArea,e.getX(),e.getY());}

//松开鼠标键时，把上一次鼠标拖动的X、Y座标设为-1preX=-preY=-}publicstaticvoidmain(String[]args)new}classDrawCanvasextendsJPanel//publicvoidpaint(Graphicsg)g.drawImage(image,0,0,}}}SwingJButtonadd(Actiona)voidaddSeparator(Dimensionsize)向的末尾添加指定大小的分隔voidsetFloatable(booleanb)voidsetMargin(Insetsm)voidsetOrientation(into)voidsetRollover(booleanrollover)设置是否是rollover状addActionActionListeneractionPerformednameicon两个属性。Action不仅可以作为器，还能转换成按钮或菜单项。ActionActionAction对象创 importjavax.swing.*;importjava.awt.*;importjava.awt.event.*;importpublicclassTestJToolBarJFramejf=newJFrame("测试工具条");JTextAreajtanewJTextArea(635);JToolBarjtb=newJToolBar();JBarjmbnewJBar();JeditnewJ("编辑");Clipboardclipboard=//ActionpasteAction newImageIcon("ico/paste.png"))publicvoidactionPerformed(ActionEvente)//try//Stringcontent=(String) ceRange(content,jta.getSelectionStart(),}catch(Exceptionee){}}}//创建"ActioncopyAction= Action("",ImageIcon("ico/copy.png"))publicvoidactionPerformed(ActionEvente){StringSelectioncontents=newStringSelection(//clipboard.setContents(contents,//}}publicvoidinit()//pasteAction默认处于不激活状态jf.add(newJScrollPane(jta));//以Action创建按钮，并将该按钮添加到Panel中JButtoncopyBn=newJButton(copyAction);JButtonpasteBnnewJButton(pasteAction);JPaneljp=newJPanel();jf.add(jp,////将edit jtb.setMargin(newInsets(20,10,5,jf.add(jtb,BorderLayout.NORTH);}publicstaticvoidmain(String[]args)new}}JColorChooserJOptionPane用来创建简单框，无序手动添加组JOptionPane提供了4个方法创建框showMessageDialog与showInternalMessageDialog 件，类似javaScript的alert函数showConfirmDialog与showInternalMessageDialog showInputDialog与showInternalInputDialog showOptionDialog与showInternalOptionDialog自定义框

定义作为此框的父框的Component通过两种方式使用此参数：包含它的Frame可以用作框的父Frame，在框的位置使用其屏幕坐标一般情况下将框紧靠组件置于其之下。nullFrame且框将居中位于屏幕上（取决于L&F）。要置于框中的描述消息。在最常见的应用中，message就是一StringStringObject。message（每个对象该Component在框中显示该Icon被包装在JLabel中并在框中显示。toStringString。结果被包装在JLabel中显示。

定义message的样式。外观管理器根据此值对框进行不同地

定义在框的底部显示的选项按钮的集合options

将在框底部显示的选项按钮集合的更详细描述options参数StringObject创建的JButton以此图标作为其。ObjecttoString果作为JButton的。要置于框中的装饰性图标。图标的默认值由messageType参默认选择（输入值）当选择更改时，调用生成PropertyChangeEvent的setValuesetWantsInputJOptionPane，则还可以侦听绑定属性JOptionPane.INPUT_VALUE_PROPERTY，以确定何时用户输入或选择了值。当其中一个showXxxDialog显示一个错误框，该框显示的message为'alert'：JOptionPane.showMessageDialog(null,"alert","alert",显示一个内部信息框，其message为'information'：JOptionPane.showInternalMessageDialog(frame,"information","information",options"yes/no"，message'chooseone'："chooseone","chooseone",显示一个内部信息框，其options为"yes/no/cancel"，message'pleasechooseone'，并具有title"pleasechooseone","information",显示一个警告框其options为OKCANCELtitle为'Warning'message为'ClickOKtoObject[]options={"OK","CANCEL"};JOptionPane.showOptionDialog(null,"ClickOKtocontinue",null,options,options[0]);显示一个要求用户键入String的框StringinputValue=JOptionPane.showInputDialog("Pleaseinputa显示一个要求用户选择String的框Object[]possibleValues={"First","Second","Third"};ObjectselectedValue=JOptionPane.showInputDialog(null,"Chooseone","Input",JOptionPane.INFORMATION_MESSAGE,null,possibleValues,possibleValues[0]);packageimportimportimportjavax.swing.JButton;importjavax.swing.JFrame;importjavax.swing.JOptionPane;publicclassTestJOptionPanepublicstaticvoidmain(String[]args){finalJFramejf=newJFrame();JButtonjb=newJButton("ok");jb.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente)//TODOAuto-generatedmethod// "information", inti "chooseone","chooseone", "pleasechooseone", Object[]options={"OK","CANCEL" null,options, StringinputValue=JOptionPane.showInputDialog("Pleaseinputavalue");"Chooseone","Input",JOptionPane.INFORMATION_MESSAGE,null,possibleValues,possibleValues[0]);}}}要直接创建和使用JOptionPane，标准模式大致如下：JOptionPanepanenewJOptionPane(arguments);pane.set.Xxxx(...);//ConfigureJDialogdialog=pane.createDialog( ObjectselectedValue=pane.getValue();if(selectedValue==null)return//Ifthereisnotanarrayofoptionif(options==null)if(selectedValueinstanceofreturn((Integer)selectedValue).intValue();returnCLOSED_OPTION;}//Ifthereisanarrayofoptionfor(intcounter=0,maxCounter=options.length;counter<maxCounter;counter++){returncounter;}returnJSplitPanejsnewJSplitPane(方向,左|上组件，右|下组件newContinusLayoutpackageimportimportpublicclassTestSplitPane{JPaneljp1=newJPanel();JPaneljp2=newJPanel();JPaneljp3=newpublicvoidinit()JFramejfnewJFrame("测试jp1.setPreferredSize(newDimension(150,jp2.setPreferredSize(newDimension(300,jp3.setPreferredSize(newDimension(300,}

new打开“一触即展”////publicstaticvoidmain(String[]args)new}}packageimportjava.awt.*;importjava.awt.event.*;importjava.util.*;importjavax.swing.*;importpublicclassTestJTabbedPaneJPaneljp1=newJPanel();JPaneljp2=newJPanel();JPaneljp3=newJPanel();JPaneljp4=newJPanel();JPaneljp5=newJFramejfnewJFrame("测试Tab页面//创建一个Tab页面的放在左边，采用换行布局策略的JTabbedPaneJTabbedPanetabbedPanenewJTabbedPane(JTabbedPane.LEFT,String[]layouts={"换行布局","滚动条布局"};String[positions左边顶部右边底部publicvoidinit(){Stringtip测试提示";组件为tabbedPane.addTab("jp1",null,null,tip);tabbedPane.addTab("jp2",null,null,tip);tabbedPane.addTab("jp3",null,null,tip);tabbedPane.addTab("jp4",null,null,tip);tabbedPane.addTab("jp5",null,null,tip);jf.add(tabbedPane,BorderLayout.CENTER);tabbedPane.addChangeListener(newChangeListener()publicvoidstateChanged(ChangeEventevent)if ponent()==null)获取所选Tabintn=}}tabbedPane.setPreferredSize(newDimension(500,//增加控制布局、位置的单选按JPanelbuttonPanel=newJPanel();ChangeActionaction=newChangeAction();buttonPanel.add(newButtonPanel(action,"选择布局策略buttonPanel.add(newButtonPanel(action,"选择位置",jf.add(buttonPanel,BorderLayout.SOUTH);}//为指定页加载内privatevoidloadTab(intn)Stringtitle=//根据页的标题获取对应封}//定义改变页的布局策略，放置位置的classChangeActionimplementsActionListenerpublicvoidactionPerformed(ActionEventevent){JRadioButtonsource=(JRadioButton)event.getSource();Stringselection=s if(selection.equals(layouts[0]))}elseif(selection.equals(layouts[1])) }elseif(selection.equals(positions[0])){ }elseif(selection.equals(positions[1])){ }elseif(selection.equals(positions[2])){ }elseif(selection.equals(positions[3])){}}}publicstaticvoidmain(String[]args)new}}////classButtonPanelextendsJPanelprivateButtonGrouppublicButtonPanel(TestJTabbedPane.ChangeActionaction,StringString[]labels){BorderFactory.createEtchedBorder(),title));setLayout(newBoxLayout(this,BoxLayout.X_AXIS));group=newButtonGroup();for(inti=0;labels!=null&&i<labels.length;i++){JRadioButtonb=newJRadioButton(labels[i]);//添加器b.setSelected(i==0);}}} 创建一个空的TabbedPane，使其具有以下指定选项卡布局中的一种： JTabbedPane.TOPTabbedPane创建一个空的创建一个空的) cement,intJTabbedPane.RIGHTtabcement，指定页的放置位置。这里有四个位置：JTabbedPane.TOP、JTabbedPane.BOTTOM、JTabbedPane.LEFT或JTabbedPane.RIGHT。tabLayout是布局策略，换行还是滚动 如果需要让某个页显示，使setSelectedIndexaddChangeListener方法这个是代表一个有位置深度也就是有z轴的容器，可以实现组件。packagecom.langsin.test4;importjavax.swing.*;importjava.awt.*;publicclassTestJLayeredPaneJFramejf=newJFrame("测试JLayeredPane");JLayeredPanelayeredPanenewJLayeredPane();publicvoidinit()JPaneljp1newMyPanel(1020面板1面板1面板1面板1");jp1.add(newJButton("OK"));JPaneljp2newMyPanel(10060面板2面板2面板2面板2");jp2.add(newJButton("OK"));JPaneljp3newMyPanel(190100面板3面板3面板3面板3");jp3.ad