Java实验报告三数组与图形用户界面

Java面向对象编程实验报告题目：数组与图形化界面专业：班级：学号：姓名：太原工业学院计算机工程系年月日一、实验目的与要求1、掌握Java编程中的数组的应用2、掌握JavaGUI编程的应用以及API的查阅3、掌握JavaGUI窗体容器、布局管理器、基本组件、事件的注册实验内容JavaGUI实现如下图简单计算器三、实施步骤1.创建类CalculatorDemo，继承JFramepackageabc;importjava.awt.BorderLayout;importjava.awt.GridLayout;importjava.awt.event.ActionListener;importjava.util.Collection;importjava.util.HashMap;importjava.util.Map;importjavax.swing.JButton;importjavax.swing.JFrame;importjavax.swing.JPanel;importjavax.swing.JTextField;publicclassCalculatorDemoextendsJFrame{ /*结果输入框*/privateJTextFieldresult;/*操作键之前缓存*/privateStringBuilderbeforeCache=newStringBuilder();/*操作键之后缓存*/privateStringBuilderafterCache=newStringBuilder();/*清除键*/privateJButtonclean;/*数字键*/privateJButton[]numberButs=newJButton[10];/*操作键*/privateMap<String,JButton>operKeyMap=newHashMap<String,JButton>();/*操作标识*/privatebooleanoperFlag=false; publicvoidsetOperFlag(booleanoperFlag){ this.operFlag=operFlag; } publicCalculatorDemo(){ initComp(); initMainWindow(); addListenerHandler(); }/*初始化组件*/privatevoidinitComp(){ /*清除按钮初始化*/ clean=newJButton("清除"); /*结果按钮初始化*/ result=newJTextField(10); /*数字键初始化*/ for(inti=0;i<10;i++){ numberButs[i]=newJButton(""+i); } /*操作键的初始化*/ operKeyMap.put("jia",newJButton("+")); operKeyMap.put("jian",newJButton("-")); operKeyMap.put("chen",newJButton("*")); operKeyMap.put("dengyu",newJButton("=")); operKeyMap.put("dian",newJButton(".")); operKeyMap.put("chu",newJButton("/"));} /***初始化Main窗体***/ privatevoidinitMainWindow(){ this.setSize(300,300); this.setLocation(350,350); this.add(result,BorderLayout.NORTH); JPanelkeyPanle=newJPanel(); //设置JPanel的布局（GridLayout） GridLayoutgl=newGridLayout(4,4); keyPanle.setLayout(gl); keyPanle.add(numberButs[7]); keyPanle.add(numberButs[8]); keyPanle.add(numberButs[9]); keyPanle.add(operKeyMap.get("chu")); keyPanle.add(numberButs[4]); keyPanle.add(numberButs[5]); keyPanle.add(numberButs[6]); keyPanle.add(operKeyMap.get("chen")); keyPanle.add(numberButs[1]); keyPanle.add(numberButs[2]); keyPanle.add(numberButs[3]); keyPanle.add(operKeyMap.get("jian")); keyPanle.add(numberButs[0]); keyPanle.add(operKeyMap.get("dian")); keyPanle.add(operKeyMap.get("jia")); keyPanle.add(operKeyMap.get("dengyu")); this.add(clean,BorderLayout.CENTER); this.add(keyPanle,BorderLayout.SOUTH); this.setVisible(true); } /** *注册事件监听 ***/privatevoidaddListenerHandler(){ /*主窗体事件处理*/ this.addWindowListener(newMainWindowListenerImpl()); /*清除按钮事件处理*/ clean.addMouseListener(newMouseListenerImpl()); clean.addActionListener(newCleanButtonActionListenerImpl(this)); /*数字键事件处理*/ for(JButtonnumBut:numberButs){ numBut.addMouseListener(newMouseListenerImpl()); numBut.addActionListener(newNumKeyActionListenerImpl(this)); } /*操作键事件处理*/Collection<JButton>operButtons= operKeyMap.values(); for(JButtonoperBut:operButtons){ operBut.addMouseListener(newMouseListenerImpl()); operBut.addActionListener(newOperKeyActionListenerImpl(this)); }}/*入口*/ publicstaticvoidmain(String[]args){ //TODOAuto-generatedmethodstub newCalculatorDemo(); } publicJTextFieldgetResult(){ returnresult; } publicStringBuildergetBeforeCache(){ returnbeforeCache; } publicStringBuildergetAfterCache(){ returnafterCache; } publicJButtongetClean(){ returnclean; } publicJButton[]getNumberButs(){ returnnumberButs; } publicMap<String,JButton>getOperKeyMap(){ returnoperKeyMap; } publicbooleanisOperFlag(){ returnoperFlag; } }2.新建类CleanButtonActionListenerImpl，在类的基础上建立接口ActionListenerpackageabc;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjavax.swing.JTextField;publicclassCleanButtonActionListenerImplimplementsActionListener{ privateCalculatorDemocal; publicCleanButtonActionListenerImpl(CalculatorDemoc){ this.cal=c; } @Override publicvoidactionPerformed(ActionEventarg0){ //TODOAuto-generatedmethodstub JTextFieldresult=cal.getResult(); /*获取输入文本*/ StringresultText= result.getText(); if(!resultText.equals("")){ //文本內容，重置為空 result.setText(""); //緩存清空 StringBuilderbeforeCache=cal.getBeforeCache(); StringBuilderafterCache=cal.getAfterCache(); beforeCache.delete(0,beforeCache.length()); afterCache.delete(0,afterCache.length()); cal.setOperFlag(false); } }}3.新建类MainWindowListenerImpl，在类的基础上建立接口WindowListenerpackageabc;importjava.awt.event.WindowEvent;importjava.awt.event.WindowListener;publicclassMainWindowListenerImplimplementsWindowListener{ @Override publicvoidwindowActivated(WindowEventarg0){ //TODOAuto-generatedmethodstub } @Override publicvoidwindowClosed(WindowEventarg0){ //TODOAuto-generatedmethodstub } /****当主窗体关闭时，推出整个程序**/ @Override publicvoidwindowClosing(WindowEventarg0){ //TODOAuto-generatedmethodstub System.out.println("退出计算器程序"); System.exit(0); } @Override publicvoidwindowDeactivated(WindowEventarg0){ //TODOAuto-generatedmethodstub } @Override publicvoidwindowDeiconified(WindowEventarg0){ //TODOAuto-generatedmethodstub } @Override publicvoidwindowIconified(WindowEventarg0){ //TODOAuto-generatedmethodstub } @Override publicvoidwindowOpened(WindowEventarg0){ //TODOAuto-generatedmethodstub System.out.print("窗体打开"); }}4.新建类MouseListenerImpl，在类的基础上建立接口MouseListenerpackageabc;importjava.awt.Color;importjava.awt.event.MouseEvent;importjava.awt.event.MouseListener;importjava.util.EventObject;importjavax.swing.JButton;publicclassMouseListenerImplimplementsMouseListener{ privateEventObjectevent; @Override publicvoidmouseClicked(MouseEventarg0){ //TODOAuto-generatedmethodstub } @Override publicvoidmouseEntered(MouseEventevent){ //TODOAuto-generatedmethodstub JButtonbt=(JButton)event.getSource(); bt.setForeground(Color.RED); } @Override publicvoidmouseExited(MouseEventevent){ //TODOAuto-generatedmethodstubJButtonbt=(JButton)event.getSource(); bt.setForeground(Color.BLACK); } @Override publicvoidmousePressed(MouseEventarg0){ //TODOAuto-generatedmethodstub } @Override publicvoidmouseReleased(MouseEventarg0){ //TODOAuto-generatedmethodstub }}5．新建类NumKeyActionListenerImpl，在类的基础上建立接口ActionListenerpackageabc;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjava.util.EventObject;importjavax.swing.JButton;importjavax.swing.JTextField;publicclassNumKeyActionListenerImplimplementsActionListener{ privateCalculatorDemocal; publicNumKeyActionListenerImpl(CalculatorDemoc){ this.cal=c; } @Override publicvoidactionPerformed(ActionEventevent){ //TODOAuto-generatedmethodstub /*获取当前操作的数字键对象*/ JButtonbut=(JButton)event.getSource(); /* *1.在没有按下操作键之前， *所有的数字键的值被缓存到beforeCache *显示到输入框中*/ /*获取数字键对应的输入值*/ StringnumVaue=but.getText(); if(!cal.isOperFlag()){ cal.getBeforeCache().append(numVaue); cal.getResult().setText(cal.getBeforeCache().toString()); }else{ cal.getAfterCache().append(numVaue);