java设计模式实验报告

设计模式实验报告学院：学院专业：班姓名：学号：指导教师：实例实例：简单工厂模式使用简单工厂模式设计一个可以创建不同几何形状（圆形、方形和三角形等）的绘图工具，每个几何图形都要有绘制draw()和擦除erase()两个方法，要求在绘制不支持的几何图形时，提示一个Unsupportedshapeexception.要求真正做出来，不要使用system.out.println。1.UML图：<<interface>><<interface>>graph+draw(Graphics):void+erase(Graphics):voidcircle+draw(Graphics):void+erase(Graphics):voidtriangle+draw(Graphics):void+erase(Graphics):voidrectangle+draw(Graphic):void+erase(Graphics):voidgeometryfctoryrenshow(String)：staticgraph2.源代码graph.javapackagesimplefactory2;importjava.awt.Graphics;publicinterfacegraph{voiddraw(Graphicsg);voiderase(Graphicsg);}circle.javapackagesimplefactory2;importjava.awt.Graphics;publicclasscircleimplementsgraph{@Overridepublicvoiddraw(Graphicsg){g.drawOval(20,60,60,60);}@Overridepublicvoiderase(Graphicsg){g.clearRect(18,55,63,68);}}rectangle.javapackagesimplefactory2;importjava.awt.Graphics;publicclassrectangleimplementsgraph{@Overridepublicvoiddraw(Graphicsg){g.drawRect(160,60,60,60);}@Overridepublicvoiderase(Graphicsg){g.clearRect(159,58,66,66);}}triangle.javapackagesimplefactory2;importjava.awt.Graphics;publicclasstriangleimplementsgraph{@Overridepublicvoiddraw(Graphicsg){int[]xPoints={80,120,150};int[]yPoints={70,120,70};intnPoints=3;g.drawPolygon(xPoints,yPoints,nPoints);}@Overridepublicvoiderase(Graphicsg){g.clearRect(81,70,70,60);}}geometryfctory.javapackagesimplefactory2;publicclassgeometryfctory{staticgraphrenshow(Stringtype)throwsException{if("circle".equals(type)){returnnewcircle();}elseif("triangle".equals(type)){returnnewtriangle();}elseif("rectangle".equals(type)){returnnewrectangle();}else{thrownewException("Unsupportedshapeexception");}}}NewJFrame.javapackagesimplefactory2;importjava.util.logging.Level;importjava.util.logging.Logger;publicclassNewJFrameextendsjavax.swing.JFrame{publicNewJFrame(){initComponents();}@SuppressWarnings("unchecked")//<editor-folddefaultstate="collapsed"desc="GeneratedCode">privatevoidinitComponents(){jButton1=newjavax.swing.JButton();jButton2=newjavax.swing.JButton();jButton3=newjavax.swing.JButton();jButton4=newjavax.swing.JButton();jButton5=newjavax.swing.JButton();jButton6=newjavax.swing.JButton();jButton7=newjavax.swing.JButton();jTextField1=newjavax.swing.JTextField();jTextField2=newjavax.swing.JTextField();setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);jButton1.setText("circle");jButton1.addMouseListener(newjava.awt.event.MouseAdapter(){publicvoidmouseClicked(java.awt.event.MouseEventevt){jButton1MouseClicked(evt);}});jButton1.addActionListener(newjava.awt.event.ActionListener(){publicvoidactionPerformed(java.awt.event.ActionEventevt){jButton1ActionPerformed(evt);}});jButton2.setText("triangle");jButton2.addActionListener(newjava.awt.event.ActionListener(){publicvoidactionPerformed(java.awt.event.ActionEventevt){jButton2ActionPerformed(evt);}});jButton3.setText("rectangle");jButton3.addActionListener(newjava.awt.event.ActionListener(){publicvoidactionPerformed(java.awt.event.ActionEventevt){jButton3ActionPerformed(evt);}});jButton4.setText("其他");jButton4.addActionListener(newjava.awt.event.ActionListener(){publicvoidactionPerformed(java.awt.event.ActionEventevt){jButton4ActionPerformed(evt);}});jButton5.setText("circle");jButton5.addMouseListener(newjava.awt.event.MouseAdapter(){publicvoidmouseClicked(java.awt.event.MouseEventevt){jButton5MouseClicked(evt);}});jButton5.addActionListener(newjava.awt.event.ActionListener(){publicvoidactionPerformed(java.awt.event.ActionEventevt){jButton5ActionPerformed(evt);}});jButton6.setText("triangle");jButton6.addActionListener(newjava.awt.event.ActionListener(){publicvoidactionPerformed(java.awt.event.ActionEventevt){jButton6ActionPerformed(evt);}});jButton7.setText("rectangle");jButton7.addActionListener(newjava.awt.event.ActionListener(){publicvoidactionPerformed(java.awt.event.ActionEventevt){jButton7ActionPerformed(evt);}});jTextField1.setText("画图");jTextField2.setText("檫除");javax.swing.GroupLayoutlayout=newjavax.swing.GroupLayout(getContentPane());getContentPane().setLayout(layout);layout.setHorizontalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(layout.createSequentialGroup().addContainerGap().addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(layout.createSequentialGroup().addComponent(jButton1).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(jButton2).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(jButton3).addGap(18,18,18).addComponent(jButton4)).addGroup(layout.createSequentialGroup().addComponent(jButton5).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(jButton6).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(jButton7))).addGap(18,18,18).addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING,false).addComponent(jTextField2,javax.swing.GroupLayout.DEFAULT_SIZE,40,Short.MAX_VALUE).addComponent(jTextField1)).addGap(0,20,Short.MAX_VALUE)));layout.setVerticalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(javax.swing.GroupLayout.Alignment.TRAILING,layout.createSequentialGroup().addContainerGap(173,Short.MAX_VALUE).addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE).addComponent(jButton1).addComponent(jButton2).addComponent(jButton3).addComponent(jButton4).addComponent(jTextField1,javax.swing.GroupLayout.PREFERRED_SIZE,javax.swing.GroupLayout.DEFAULT_SIZE,javax.swing.GroupLayout.PREFERRED_SIZE)).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE).addComponent(jButton5).addComponent(jButton6).addComponent(jButton7).addComponent(jTextField2,javax.swing.GroupLayout.PREFERRED_SIZE,javax.swing.GroupLayout.DEFAULT_SIZE,javax.swing.GroupLayout.PREFERRED_SIZE)).addGap(75,75,75)));pack();}privatevoidjButton1ActionPerformed(java.awt.event.ActionEventevt){graphx=null;try{x=geometryfctory.renshow("circle");}catch(Exceptionex){Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE,null,ex);}x.draw(this.getGraphics());}privatevoidjButton2ActionPerformed(java.awt.event.ActionEventevt){graphz=null;try{y=geometryfctory.renshow("triangle");}catch(Exceptionex){Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE,null,ex);}y.draw(this.getGraphics());}privatevoidjButton3ActionPerformed(java.awt.event.ActionEventevt){try{z=geometryfctory.renshow("rectangle");}catch(Exceptionex){Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE,null,ex);}z.draw(this.getGraphics());}privatevoidjButton4ActionPerformed(java.awt.event.ActionEventevt){graphz=null;try{z=geometryfctory.renshow("aa");}catch(Exceptionex){Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE,null,ex);}z.draw(this.getGraphics());}privatevoidjButton5MouseClicked(java.awt.event.MouseEventevt){graphx=null;try{x=geometryfctory.renshow("circle");}catch(Exceptionex){Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE,null,ex);}x.erase(this.getGraphics());}privatevoidjButton6ActionPerformed(java.awt.event.ActionEventevt){graphy=null;try{y=geometryfctory.renshow("triangle");}catch(Exceptionex){Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE,null,ex);}y.erase(this.getGraphics());}privatevoidjButton7ActionPerformed(java.awt.event.ActionEventevt){graphz=null;try{z=geometryfctory.renshow("rectangle");}catch(Exceptionex){Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE,null,ex);}z.erase(this.getGraphics());}publicstaticvoidmain(Stringargs[]){java.awt.EventQueue.invokeLater(newRunnable(){publicvoidrun(){newNewJFrame().s