java实验计算器(使用java窗体工具做一个简单的计算器)

实验名称：使用java窗体工具做一个简单的计算器一、 实验目的学会使用java窗体控件。主要使用JButton以及JLaber空间。使用监听器会设置各种控件参数学会处理各种数据之间的转换软件微小问题的调试与优化二、 实验内容使用窗体控件来制作一个简易计算器，要能够正确的实现加减乘除等相关功能，并且能优化字符串与整型，浮点型之间的关系，使之输出整数结果末尾不带有零，并且进行一些其他优化，如无限小数，以及二进制与十进制转换而导致的误差，需要进行相关优化。三、 实验步骤importjava.awt.EventQueue;importjavax.swing.JFrame;importjavax.swing.JTextField;importjavax.swing.JButton;importjava.awt.event.ActionListener;importjava.awt.font.TextMeasurer;importjava.awt.event.ActionEvent;importjavax.swing.SwingConstants;importjava.awt.Font;publicclassCalculate{StringoldString;intoperate;privateJFrameframe;privateJTextFieldtextField;/***Launchtheapplication.*/publicstaticvoidmain(String[]args){EventQueue.invokeLater(newRunnable(){publicvoidrun(){try{Calculatewindow=newCalculate();window.frame.setVisible(true);}catch(Exceptione){e.printStackTrace();}}});/***Createtheapplication.*/publicCalculate(){initialize();}/***Initializethecontentsoftheframe.*/privatevoidinitialize(){frame=newJFrame();frame.setTitle("\u8BA1\u7B97\u5668");frame.setBounds(750,300,339,352);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.getContentPane().setLayout(null);textField=newJTextField();textField.setEditable(false);textField.setFont(newFont(”宋体"，Font.PLAIN,30));textField.setHorizontalAlignment(SwingConstants.RIGHT);textField.setText("0");textField.setBounds(14,13,285,66);frame.getContentPane().add(textField);textField.setColumns(10);JButtonbtnNewButton=newJButton("4");btnNewButton.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){Strings=textField.getText();if(s.equals("0"))textField.setText("4");elsetextField.setText(s+"4");}});btnNewButton.setBounds(24,169,59,27);frame.getContentPane().add(btnNewButton);JButtonbutton=newJButton("7");button.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){Strings=textField.getText();if(s.equals("0"))textField.setText("7");elsetextField.setText(s+"7");});button.setBounds(24,127,59,27);frame.getContentPane().add(button);JButtonbutton_1=newJButton("1");button_1.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){Strings=textField.getText();if(s.equals("0"))textField.setText("1");elsetextField.setText(s+"1");}});button_1.setBounds(24,209,59,27);frame.getContentPane().add(button_1);JButtonbutton_2=newJButton("2");button_2.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){Strings=textField.getText();if(s.equals("0"))textField.setText("2");elsetextField.setText(s+"2");}});button_2.setBounds(98,209,59,27);frame.getContentPane().add(button_2);JButtonbutton_3=newJButton("3");button_3.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){Strings=textField.getText();if(s.equals("0"))textField.setText("3");elsetextField.setText(s+"3");}});button_3.setBounds(171,209,59,27);frame.getContentPane().add(button_3);JButtonbutton_4=newJButton("5");button_4.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){Strings=textField.getText();if(s.equals("0"))textField.setText("5");elsetextField.setText(s+"5");}});button_4.setBounds(98,169,59,27);frame.getContentPane().add(button_4);JButtonbutton_5=newJButton("6");button_5.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){Strings=textField.getText();if(s.equals("0"))textField.setText("6");elsetextField.setText(s+"6");}});button_5.setBounds(171,169,59,27);frame.getContentPane().add(button_5);JButtonbutton_6=newJButton("8");button_6.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){Strings=textField.getText();if(s.equals("0"))textField.setText("8");elsetextField.setText(s+"8");}});button_6.setBounds(97,127,59,27);frame.getContentPane().add(button_6);JButtonbutton_7=newJButton("9");button_7.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){Strings=textField.getText();if(s.equals("0"))textField.setText("9");elsetextField.setText(s+"9");}});button_7.setBounds(171,127,59,27);frame.getContentPane().add(button_7);JButtonbutton_8=newJButton("0");button_8.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){Strings=textField.getText();if(s.equals("0"))textField.setText("0");elsetextField.setText(s+"0");}});button_8.setBounds(24,248,59,27);frame.getContentPane().add(button_8);JButtonbutton_9=newJButton(".");button_9.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){Strings=textField.getText();if(!s.contains("."))textField.setText(s+".");}});button_9.setBounds(98,249,59,27);frame.getContentPane().add(button_9);JButtonbutton_10=newJButton("\u00B1");button_10.setBounds(171,249,59,27);frame.getContentPane().add(button_10);JButtonbutton_11=newJButton("+");button_11.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){oldString=textField.getText();textField.setText("0");operate=1;}});button_11.setBounds(240,87,59,27);frame.getContentPane().add(button_11);JButtonbutton_12=newJButton("-");button_12.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){oldString=textField.getText();textField.setText("0");operate=2;}});button_12.setBounds(240,127,59,27);frame.getContentPane().add(button_12);JButtonbutton_13=newJButton("*");button_13.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){oldString=textField.getText();textField.setText("0");operate=3;}});button_13.setBounds(240,169,59,27);frame.getContentPane().add(button_13);JButtonbutton_14=newJButton("/");button_14.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){oldString=textField.getText();textField.setText("0");operate=4;}});button_14.setBounds(240,209,59,27);frame.getContentPane().add(button_14);JButtonbtnNewButton_1=newJButton("C");btnNewButton_1.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){textField.setText("0");oldString="0";}});btnNewButton_1.setBounds(24,87,59,27);frame.getContentPane().add(btnNewButton_1);JButtonbtnCe=newJButton("CE");btnCe.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){}});btnCe.setBounds(98,87,59,27);frame.getContentPane().add(btnCe);JButtonbutton_16=newJButton("<-");button_16.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){Stringss=textField.getText();if(ss.length()==1)textField.setText("0");elsetextField.setText(ss.substring(0,ss.length()-1));}});button_16.setBounds(171,87,59,27);