calculator.java

一款模拟windows的计算器

				String tempStr=displayField.getText();
				tempStr=tempStr.replace(",","");

				double num=0;
				try{
					num=java.lang.Double.parseDouble(tempStr);
					if(num>=0){
						decimalismFormat.setMaximumFractionDigits(31);
						displayField.setText(decimalismFormat.format(Math.sqrt(num)));
					}
					else{
						displayField.setText("函数输入无效。");
						isError=true;
					}
				}
				catch(NumberFormatException nfe){
				}

				isDot=false;
				isOperandBegin=true;
			}
		});


		//创建%按钮
		btnPercent=new JButton("%");
		btnPercent.setForeground(Color.BLUE);
		btnPercent.setMargin(new Insets(0,1,2,1));
		container.add(btnPercent);
		btnPercent.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent arg0) {
				if(isError==true){
					return;
				}

				try{

					String displayStr=displayField.getText();

					DecimalFormat df=new DecimalFormat();
					Object obj=df.parse(displayStr);

					BigDecimal bd=new BigDecimal(obj.toString());
					String tempStr=Arith.div(bd.toString(),"100").toString();
					displayField.setText(decimalismFormat.format(Arith.mul(result,tempStr)));

				}
				catch(NumberFormatException e){
				}
				catch (ParseException pe) {
					pe.printStackTrace();
				}

				isDot=false;
				isOperandBegin=true;
			}

		});


		//创建1/x按钮
		btnReciprocal=new JButton("1/x");
		btnReciprocal.setMargin(new Insets(0,1,2,1));
		container.add(btnReciprocal);
		btnReciprocal.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent arg0) {
				if(isError==true){
					return;
				}

				try{
					String displayStr=displayField.getText();
					double num=Double.parseDouble(displayStr);

					if(num!=0){

						BigDecimal bd;
						if(isFirstReciprocal==true){
							bd=Arith.div("1",displayStr.replace(",",""));
							bottomNum=bd.toString();
							isFirstReciprocal=false;
						}else{
							bd=Arith.div("1",bottomNum);
							isFirstReciprocal=true;
						}


						if(bd.toString().length()>=31){

							displayField.setText(new DecimalFormat("0.###############################E0").format(bd));

							String testStr=displayField.getText();
							String strscale=testStr.substring(testStr.indexOf("E")+1,testStr.length());
							int scale=Integer.parseInt(strscale);
							if(scale>=-32&&scale<31){
								displayField.setText(decimalismFormat.format(bd));
							}
							isOperandBegin=true;
							return;
						}

						displayField.setText(decimalismFormat.format(bd));
					}
					else{
						displayField.setText("除数不能为0。");
						isError=true;
					}
				}
				catch(NumberFormatException nfe){
				}

				isOperandBegin=true;
				isDot=false;
			}
		});



		//创建pi按钮
		btnPI=new JButton("pi");
		btnPI.setForeground(Color.BLUE);
		btnPI.setMargin(new Insets(0,1,2,1));
		container.add(btnPI);
		btnPI.addActionListener(new ActionListener(){

			public void actionPerformed(ActionEvent arg0) {
				if(isError==true){
					return;
				}
				if(cbInv.isSelected()==true){
					displayField.setText(2*Math.PI+"");
					cbInv.setSelected(false);
				}
				else{
					displayField.setText(Math.PI+"");
				}

				isOperandBegin=true;
				isDot=true;
			}
		});



		//创建Mod按钮
		btnMod=new JButton("Mod");
		btnMod.setForeground(Color.RED);
		btnMod.setMargin(new Insets(0,1,2,1));
		container.add(btnMod);
		btnMod.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e) {
				if(viewMenu_standarType.isSelected()){
					setOperatorForStandar(e);
				}
				else{
					setOperatorForScience(e);
				}
			}
		});

		//创建Or按钮
		btnOr=new JButton("Or");
		btnOr.setForeground(Color.RED);
		btnOr.setMargin(new Insets(0,1,2,1));
		container.add(btnOr);
		btnOr.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e) {
				if(viewMenu_standarType.isSelected()){
					setOperatorForStandar(e);
				}
				else{
					setOperatorForScience(e);
				}
			}
		});

		//创建Lsh按钮
		btnLsh=new JButton("Lsh");
		btnLsh.setForeground(Color.RED);
		btnLsh.setMargin(new Insets(0,1,2,1));
		container.add(btnLsh);
		btnLsh.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e) {
				if(viewMenu_standarType.isSelected()){
					setOperatorForStandar(e);
				}
				else{
					setOperatorForScience(e);
				}
			}
		});

		//创建And按钮
		btnAnd=new JButton("And");
		btnAnd.setForeground(Color.RED);
		btnAnd.setMargin(new Insets(0,1,2,1));
		container.add(btnAnd);
		btnAnd.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e) {
				if(viewMenu_standarType.isSelected()){
					setOperatorForStandar(e);
				}
				else{
					setOperatorForScience(e);
				}
			}
		});

		//创建Xor按钮
		btnXor=new JButton("Xor");
		btnXor.setForeground(Color.RED);
		btnXor.setMargin(new Insets(0,1,2,1));
		container.add(btnXor);
		btnXor.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e) {
				if(viewMenu_standarType.isSelected()){
					setOperatorForStandar(e);
				}
				else{
					setOperatorForScience(e);
				}
			}
		});

		//创建Not按钮
		btnNot=new JButton("Not");
		btnNot.setForeground(Color.RED);
		btnNot.setMargin(new Insets(0,1,2,1));
		container.add(btnNot);
		btnNot.addActionListener(new ActionListener(){

			public void actionPerformed(ActionEvent arg0) {
				if(isError){
					return;
				}
				String str=displayField.getText();
				str=str.replace(",","");
				if(str.indexOf(".")!=-1){
					str=str.substring(0,str.indexOf("."));
				}

				if(rbHexadecimal.isSelected()){
					str=CarryConvert.todec(str,16).toString();
				}
				else if(rbOctal.isSelected()){
					str=CarryConvert.todec(str,8).toString();
				}
				else if(rbBinary.isSelected()){
					str=CarryConvert.todec(str,2).toString();
				}

				try{
					int num=Integer.parseInt(str);
					num=~num;//进行取反操作
					//setGroupingState();

					if(rbHexadecimal.isSelected()){
						str=Integer.toHexString(num);
					}
					else if(rbOctal.isSelected()){
						str=Integer.toOctalString(num);
					}
					else if(rbBinary.isSelected()){
						str=Integer.toBinaryString(num);
					}
					else{
						str=num+"";
					}
					displayField.setText(str);
					isOperandBegin=true;
					isDot=false;
				}
				catch(NumberFormatException nfe){
					JOptionPane.showMessageDialog(null,"对不起，该数值已超出本计算器的计算范围！计算中止！","提示",JOptionPane.ERROR_MESSAGE);
					displayField.setText("计算操作中止。");
					isError=true;
					return;
				}
			}

		});

		//创建Int按钮
		btnInt=new JButton("Int");
		btnInt.setForeground(Color.RED);
		btnInt.setMargin(new Insets(0,1,2,1));
		container.add(btnInt);
		btnInt.addActionListener(new ActionListener(){

			public void actionPerformed(ActionEvent arg0) {
				// TODO 自动生成方法存根
				if(isError){
					return;
				}
				String str=displayField.getText();
				str=str.replace(",","");
				double num=Double.parseDouble(str);

				if(cbInv.isSelected()){
					displayField.setText((num-Math.floor(num))+"");
					cbInv.setSelected(false);
				}else{
					displayField.setText(Math.floor(num)+"");
				}
				isOperandBegin=true;
				isDot=false;
			}

		});

		//改变标题栏窗口左侧默认图标
		Toolkit tk=Toolkit.getDefaultToolkit();
		Image   image=tk.createImage("icons/calculator.png");
		this.setIconImage(image);


		//创建统计框
		dlgStatistic=new JFrame("统计框");
		dlgStatistic.setSize(227,163);
		dlgStatistic.setLocationRelativeTo(this);
		dlgStatistic.addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e){
				//清空JList里的内容
				vecListData.removeAllElements();
				btnAve.setEnabled(false);
				btnSum.setEnabled(false);
				btnS.setEnabled(false);
				btnDat.setEnabled(false);
				dlgStatistic.setVisible(false);
			}
		});
		dlgcon=dlgStatistic.getContentPane();
		dlgcon.setLayout(null);

		//创建数据显示列表
		vecListData=new Vector();

		datalist=new JList(vecListData);
		datalist.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
		datalist.setVisibleRowCount(5);
		datalist.setFixedCellWidth(39);
		datalist.setFixedCellHeight(12);
		datalist.setAutoscrolls(true);
		datalist.addMouseListener(new MouseAdapter(){
			public void mouseClicked(MouseEvent me) {
				// TODO 自动生成方法存根
				if(me.getClickCount()==2){
					displayField.setText(datalist.getSelectedValue().toString());
				}
			}
		});
		scroll=new JScrollPane(datalist);
		scrollbar=scroll.getVerticalScrollBar();
		scroll.setWheelScrollingEnabled(true);
		scroll.setBounds(4,5,208,64);
		dlgcon.add(scroll);

		//创建返回按钮
		btnReturn=new JButton("返回(R)");
		btnReturn.setMnemonic('R');
		btnReturn.setForeground(Color.BLACK);
		btnReturn.setMargin(new Insets(0,1,2,0));
		dlgcon.add(btnReturn);
		btnReturn.setBounds(5,87,50,20);
		btnReturn.addActionListener(new ActionListener(){

			public void actionPerformed(ActionEvent arg0) {
				// TODO 自动生成方法存根
				//主窗口获取焦点
				mainFrameGetFocus();
			}

		});

		//创建加载按钮
		btnLoad=new JButton("加载(L)");
		btnLoad.setMnemonic('L');
		btnLoad.setForeground(Color.BLACK);
		btnLoad.setMargin(new Insets(0,1,2,0));
		dlgcon.add(btnLoad);
		btnLoad.setBounds(59,87,50,20);
		btnLoad.addMouseListener(new MouseAdapter(){
			public void mouseClicked(MouseEvent e) {
				// TODO 自动生成方法存根
				displayField.setText(datalist.getSelectedValue().toString());
			}
		});

		//创建清零按钮
		btnClearSelect=new JButton("清零(C)");
		btnClearSelect.setMnemonic('C');
		btnClearSelect.setForeground(Color.BLACK);
		btnClearSelect.setMargin(new Insets(0,1,2,0));
		dlgcon.add(btnClearSelect);
		btnClearSelect.setBounds(113,87,50,20);
		btnClearSelect.addActionListener(new ActionListener(){

			public void actionPerformed(ActionEvent arg0) {
				// TODO 自动生成方法存根
				int index=datalist.getSelectedIndex();
				vecListData.removeElementAt(index);
				datalist.setListData(vecListData);
				if(index>=vecListData.size()){
					datalist.setSelectedIndex(index-1);
				}else{
					datalist.setSelectedIndex(index);
				}
				lblDataCount.setText("n="+vecListData.size());
			}

		});

		//创建全清按钮
		btnClearAll=new JButton("全清(A)");
		btnClearAll.setMnemonic('A');
		btnClearAll.setForeground(Color.BLACK);
		btnClearAll.setMargin(new Insets(0,1,2,0));
		dlgcon.add(btnClearAll);
		btnClearAll.setBounds(167,87,50,20);
		btnClearAll.addActionListener(new ActionListener(){

			public void actionPerformed(ActionEvent arg0) {
				// TODO 自动生成方法存根				;
				vecListData.removeAllElements();
				datalist.setListData(vecListData);
				lblDataCount.setText("n="+vecListData.size());
			}

		});

		//创建显示数据个数的标签
		lblDataCount=new JLabel("n=0");
		dlgcon.add(lblDataCount);
		lblDataCount.setBounds(98,111,60,15);

		dlgStatistic.setIconImage(image);

		//创建帮助提示信息的对话框(无边框)
		dlgTips=new JDialog();
		dlgtipscon=dlgTips.getContentPane();

		lblTips=new JEditorPane();
		lblTips.setEditable(false);
		Icon shadowicon=new ImageIcon("icons/shadow.png");
		lblTips.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createMatteBorder(0,0,6,7,shadowicon),BorderFactory.createMatteBorder(1,1,1,1,Color.BLACK)));

		lblTips.addMouseListener(this);

		dlgtipscon.add(lblTips);
		lblTips.setSize(330,80);
		lblTips.setBackground(new Color(255,255,238));
		dlgTips.setUndecorated(true);
		dlgTips.addMouseListener(this);
		dlgTips.addFocusListener(this);


		///////////////////////////////////////////////////////////
		//btnBackspace注册右键菜单事件
		rbHexadecimal.addMouseListener(this);
		rbDecimalism.addMouseListener(this);
		rbOctal.addMouseListener(this);
		rbBinary.addMouseListener(this);
		rbAngle.addMouseListener(this);
		rbRadian.addMouseLi