《java计算器》word版.doc

实 习 报 告题目： 高级程序语言设计（Java） 系部名称： 经济管理系 专业班级： 信管104 学生姓名： 张扬程 学 号： 201004034432 指导教师： 王志辉 刘帆 教师职称： 讲师 2011年12月30日import java.awt.*;import javax.swing.*;import java.awt.event.*;import javax.swing.border.*;import java.text.DecimalFormat; public class JSQ JFrame frame; JMenuBar mb; JMenu m1,m2,m3; JMenuItem copy,cut,paste,content,index,b,k,s; Font t;JButton bN,bS;ImageIcon img; JTextField text;GridBagLayout gridbag;GridBagConstraints c; JPanel p1,p2; JLabel label; private boolean IfResult = true, flag = false; private String operation = =; private double result = 0; private Num numActionListener;private DecimalFormat df; public JSQ ( ) frame=new JFrame(计算器); df = new DecimalFormat(#.#); img=new ImageIcon(图片/图片.jpg);frame.setIconImage(img.getImage();frame.setResizable(false);frame.setBounds(200,200,320,280);Container c1=frame.getContentPane(); mb=new JMenuBar( ); m1=new JMenu(编辑(E); copy=new JMenuItem(复制(C) Ctrl+C); paste=new JMenuItem(粘贴(P) Ctrl+V); m2=new JMenu(查看(V); b=new JMenuItem(标准型(T); k=new JMenuItem(科学型(S); s=new JMenuItem(数字分组(I); m3=new JMenu(帮助(H); content=new JMenuItem(帮助主题(H); index=new JMenuItem(关于计算器(A); t=new Font(sanserif,Font.PLAIN,12); addEditMenu(); addViewMenu(); addHelpMenu();addJMenuBar(); frame.setJMenuBar(mb); c=new GridBagConstraints(); gridbag=new GridBagLayout(); p1=new JPanel();c1.add (p1); p1.setLayout(gridbag);text=new JTextField(0.,25); text.setBackground(Color.white);p2=new JPanel(); text.setHorizontalAlignment(JTextField.RIGHT); text.setBorder(BorderFactory.createBevelBorder(BevelBorder.LOWERED); text.setEditable(false); p2.add(text);label=new JLabel ( ); c = newGridBagConstraints(0,1,1,1,0,0, GridBagConstraints.CENTER, GridBagConstraints.BOTH,new Insets(0,2,0,2),0,0); gridbag.setConstraints(label,c); label.setFont(new Font(Serif,Font.PLAIN,15); label.setBorder(BorderFactory.createBevelBorder(BevelBorder.LOWERED); p1.add(label); numActionListener = new Num(); addJPanel(p2,0,0,6,1); addJButton(Backspace,1,1,2,1,Color.red,new Clear(); addJButton(CE,3,1,2,1,Color.red,new Clear(); addJButton(C,5,1,1,1,Color.red,new Clear(); addJButton(MC,0,2,1,1,Color.red,new Clear(); addJButton(MR,0,3,1,1,Color.red,new Clear(); addJButton(MS,0,4,1,1,Color.red,new Clear(); addJButton(M+,0,5,1,1,Color.red,new Clear(); addJButton(7,1,2,1,1,Color.blue,numActionListener); addJButton(4,1,3,1,1,Color.blue,numActionListener); addJButton(1,1,4,1,1,Color.blue,numActionListener); addJButton(0,1,5,1,1,Color.blue,numActionListener); addJButton(8,2,2,1,1,Color.blue,numActionListener); addJButton(5,2,3,1,1,Color.blue,numActionListener); addJButton(2,2,4,1,1,Color.blue,numActionListener); addJButton(9,3,2,1,1,Color.blue,numActionListener); addJButton(6,3,3,1,1,Color.blue,numActionListener); addJButton(3,3,4,1,1,Color.blue,numActionListener); addJButton(+/-,2,5,1,1,Color.blue,numActionListener); addJButton(.,3,5,1,1,Color.blue,numActionListener); addJButton(/,4,2,1,1,Color.red,new Signs(); addJButton(*,4,3,1,1,Color.red,new Signs(); addJButton(-,4,4,1,1,Color.red,new Signs(); addJButton(+,4,5,1,1,Color.red,new Signs(); addJButton(Sqrt,5,2,1,1,Color.blue,new Signs(); addJButton(%,5,3,1,1,Color.blue,new Signs(); addJButton(1/x,5,4,1,1,Color.blue,new Signs();addJButton(=,5,5,1,1,Color.red,new Signs(); frame.setVisible(true); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); private void addEditMenu()m1.add( copy);m1.addSeparator();m1.add( paste);m1.setFont(t); private void addViewMenu()m2.add(b);m2.addSeparator();m2.add(k);m2.addSeparator();m2.add(s);m2.setFont(t); private void addHelpMenu() m3.add(content); m3.add(index); m3.addSeparator();m3.setFont(t); private void addJMenuBar() mb.add(m1); mb.add(m2); mb.add(m3);private void addJPanel(String name,int gridx,int gridy,int gridwidth,int gridheight ) c.gridx=gridx; c.gridy=gridy; c.gridwidth=gridwidth; c.gridheight=gridheight; gridbag.setConstraints(p2,c);p1.add(p2); private void addJButton(String name,int gridx,int gridy,int gridwidth,int gridheight,Color yanse,ActionListener action)JButton button =new JButton(name); button.addActionListener(action);c.gridx=gridx;c.gridy=gridy;c.gridwidth=gridwidth;c.gridheight=gridheight;c.anchor=GridBagConstraints.CENTER;button.setForeground(yanse);c.insets=new Insets(3,2,3,2);gridbag.setConstraints(button,c);p1.add(button);class Num implements ActionListenerpublic void actionPerformed(ActionEvent e)String str = e.getActionCommand();if(IfResult)text.setText(str);IfResult = false;else text.setText(text.getText().trim() + str);if(text.getText().equals(0)text.setText(0);IfResult = true;flag = true;private void getResult (double x)if(operation = +) result += x; else if(operation = -) result -= x; else if(operation = *) result *= x; else if(operation = /) result /= x; else if(operation = =) result = x; text.setText(df.format(result); class Signs implements ActionListener public void actionPerformed(ActionEvent e) String str = e.getActionCommand(); if( str.equals(%) ) text.setText(df.format(Double.parseDouble(text.getText() / 100);else if ( flag ) IfResult = false;If ( IfResult ) operation = str; else getResult(Double.parseDouble(text.getText();operation = str;IfResult = true;class Clear implements ActionListenerpublic void actionPerformed(ActionEvent e) String str = e.getActionCommand();if(str = C)text.setText(0);IfResult = true;result = 0;else if(str = -/+)double i = 0 - Double.parseDouble (text.getText( ).trim();text.setText(df.format(i); else if(str = Backspace)if(Double.parseDouble(text.getText() 0)if(text.getText().length() 1)text.setText(text.getText().substring(0,text.getText()