java做的application界面送外卖系统

import javax.swing.*; import java.awt.*; import java.awt.event.*; import javax.swing.border.*; import java.sql.*; class ZhuCe extends Frame implements ActionListener// 用户界面类类 { Box baseBox,boxV1,boxV2; TextField t1,t2,t3,t4,t5; Button add,del,update,chaxun; int chang[]={1,2,3,4};//标记 Connection con = null;// Statement sql = null; ResultSet rs = null; String s_id,s_name,s_sex,s_class,s_room; ZhuCe(String s) { super(s); t1=new TextField(12);t1.setBackground(Color.orange); t2=new TextField(12);t2.setBackground(Color.orange); t3=new TextField(12);t3.setBackground(Color.orange); t4=new TextField(12);t4.setBackground(Color.orange); t5=new TextField(12);t5.setBackground(Color.orange); t1.setEditable(false); t2.setEditable(false); t3.setEditable(false); t4.setEditable(false); t5.setEditable(false); add=new Button("添加用户"); add.addActionListener(this); del=new Button("删除用户");del.addActionListener(this); update=new Button("更新用户");update.addActionListener(this); chaxun=new Button("查询用户");chaxun.addActionListener(this); add.setBackground(Color.magenta); del.setBackground(Color.magenta); update.setBackground(Color.magenta); chaxun.setBackground(Color.magenta); boxV1=Box.createVerticalBox(); boxV1.add(new Label(" 学号:")); boxV1.add(Box.createVerticalStrut(8)); boxV1.add(new Label(" 姓名:")); boxV1.add(Box.createVerticalStrut(8)); boxV1.add(new Label(" 性别:")); boxV1.add(Box.createVerticalStrut(8)); boxV1.add(new Label(" 班级:")); boxV1.add(Box.createVerticalStrut(8)); boxV1.add(new Label(" 宿舍:")); boxV1.add(Box.createVerticalStrut(8)); boxV1.add(update); boxV1.add(Box.createVerticalStrut(8)); boxV1.add(chaxun); boxV2=Box.createVerticalBox(); boxV2.add(t1); boxV2.add(Box.createVerticalStrut(8)); boxV2.add(t2); boxV2.add(Box.createVerticalStrut(8)); boxV2.add(t3); boxV2.add(Box.createVerticalStrut(8)); boxV2.add(t4); boxV2.add(Box.createVerticalStrut(8)); boxV2.add(t5); boxV2.add(Box.createVerticalStrut(8)); boxV2.add(add); boxV2.add(Box.createVerticalStrut(8)); boxV2.add(del); baseBox=Box.createHorizontalBox(); baseBox.add(boxV1); baseBox.add(Box.createHorizontalStrut(10)); baseBox.add(boxV2); add(baseBox); setLayout(new FlowLayout()); //add(baseBox,BorderLayout.NORTH); //add(add,BorderLayout.SOUTH); /*add(del,BorderLayout.SOUTH); add(update,BorderLayout.SOUTH); add(chaxun,BorderLayout.SOUTH);*/ setBounds(120,125,300,350); setVisible(true); addWindowListener(new WindowAdapter()//关闭窗口 { public void windowClosing(WindowEvent e) { setVisible(false); } }); setBackground(Color.cyan); // 将窗口置于屏幕中央 Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); Dimension frameSize = this.getSize(); if (frameSize.height > screenSize.height) { frameSize.height = screenSize.height; } if (frameSize.width > screenSize.width) { frameSize.width = screenSize.width; } setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2); setResizable(false); // chang[0]=1;chang[1]=2;chang[2]=3;chang[3]=4; ////标记 } public void actionPerformed(ActionEvent e) { s_id=t1.getText().toString(); s_name=t2.getText().toString(); s_sex=t3.getText().toString(); s_class=t4.getText().toString(); s_room=t5.getText().toString(); if(e.getSource()==add)// 添加用户 { if( chang[0]==1) { chang[0]=0;add.setLabel("确定"); t1.setEditable(true); t2.setEditable(true); t3.setEditable(true); t4.setEditable(true); t5.setEditable(true); t1.setBackground(Color.white); t2.setBackground(Color.white); t3.setBackground(Color.white); t4.setBackground(Color.white); t5.setBackground(Color.white); t1.setText(" "); t2.setText(" "); t3.setText(" "); t4.setText(" "); t5.setText(" "); } else if(chang[0]==0) { chang[0]=1; add.setLabel("添加用户"); con = AccessConnection.getCon(); String addUser = new String("insert into users values('" + s_id + "','" + s_name + "','" + s_sex + "','" + s_class + "','" + s_room + "')"); try { sql = con.createStatement(); sql.executeUpdate(addUser); JOptionPane.showMessageDialog(null,"用户"+s_name+"已经被添加！"); con.close(); } catch (SQLException e1) { System.out.println("添加用户" + e1); } } } else if(e.getSource()==del)//删除用户(学号和姓名) { if( chang[1]==2) { chang[1]=0;del.setLabel("确定"); t1.setEditable(true); t2.setEditable(true); t3.setEditable(false); t4.setEditable(false); t5.setEditable(false); t1.setBackground(Color.white); t2.setBackground(Color.white); t3.setBackground(Color.orange); t4.setBackground(Color.orange); t5.setBackground(Color.orange); t1.setText(" "); t2.setText(" "); t3.setText(" "); t4.setText(" "); t5.setText(" "); } else if(chang[1]==0) { chang[1]=2;del.setLabel("删除用户"); con = AccessConnection.getCon(); String delUser=new String("delete from users where s_id = '" + s_id + "' or s_name = '" + s_name + "' "); try { sql = con.createStatement(); sql.executeUpdate(delUser); JOptionPane.showMessageDialog(null,"用户"+s_id+"已经被删除！（关键字：学号or姓名）"); con.close();} catch (SQLException e1) {System.out.println("删除用户" + e1); } } } else if(e.getSource()==update)//更新用户(名字，性别，班级，宿舍) { if( chang[2]==3) { chang[2]=0;update.setLabel("确定"); t1.setEditable(true); t2.setEditable(true); t3.setEditable(true); t4.setEditable(true); t5.setEditable(true); t1.setBackground(Color.red); t2.setBackground(Color.white); t3.setBackground(Color.white); t4.setBackground(Color.white); t5.setBackground(Color.white); t1.setText(" "); t2.setText(" "); t3.setText(" "); t4.setText(" "); t5.setText(" "); } else if(chang[2]==0) { chang[2]=3;update.setLabel("更新用户"); con = AccessConnection.getCon(); String updateUser=new String("update users set s_name = '" + s_name + "', s_sex = '" + s_sex + "' , s_class = '" + s_class + "', s_room = '" + s_room + "'" + "where s_id = '" + s_id + "'"); try { sql = con.createStatement(); sql.executeUpdate(updateUser); JOptionPane.showMessageDialog(null,"更新用户: "+s_id+"(关键字：学号)"); con.close(); } catch (SQLException e3) {System.out.println("更新用户(名字，性别，班级，宿舍)" + e3); } } } else if(e.getSource()==chaxun)//查询用户 (关