java+mysql学生信息管理系统课程设计报告 - 图文(6)

}

}

cNum.setText(null); cName.setText(null); cTeacher.setText(null); cPoint.setText(null); cRatio.setText(null); cPlace.setText(null);

/**

* 通过给定的文件名获得图像 */

Image getImage(String filename) { }

URLClassLoader urlLoader = (URLClassLoader)this.getClass().

getClassLoader(); URL url = null; Image image = null;

url = urlLoader.findResource(filename);

image = Toolkit.getDefaultToolkit().getImage(url); MediaTracker mediatracker = new MediaTracker(this); try { }

catch (InterruptedException _ex) { }

if (mediatracker.isErrorID(0)) { }

return image;

image = null; image = null;

mediatracker.addImage(image, 0); mediatracker.waitForID(0);

//////////////////////////////////CourseInfoSearchCnum.java/////////////////

import javax.swing.*; import java.awt.*; import java.awt.event.*; /**

* 课程信息管理模块

* 根据课程编号查询课程信息，以供调用者修改或删除 */ public

class

CourseInfoSearchCnum

extends

JDialog

implements

ActionListener{

Container contentPane;

String[] s;

//框架的大小

Dimension faceSize = new Dimension(300, 100); JLabel jLabel1 = new JLabel(); JComboBox selectCnum;

JButton searchInfo = new JButton();

public CourseInfoSearchCnum(JFrame frame) { super(frame, true); this.setResizable(false); try { Init();

}

catch (Exception e) { e.printStackTrace(); }

//设置运行位置，使对话框居中 Dimension

screenSize

Toolkit.getDefaultToolkit().getScreenSize();

this.setLocation( (int) (screenSize.width - 400) / 2 ,

(int) (screenSize.height - 300) / 2 + 45);

}

private void Init() throws Exception { this.setSize(faceSize);

contentPane = this.getContentPane(); contentPane.setLayout(new FlowLayout()); jLabel1.setText(\请输入或者选择课程号:\

jLabel1.setFont(new Font(\ contentPane.add(jLabel1);

CrsBean getId = new CrsBean(); s = getId.getAllId();

selectCnum = new JComboBox(s); selectCnum.setSelectedItem(null); selectCnum.setEditable(true);

selectCnum.setFont(new Font(\ contentPane.add(selectCnum);

searchInfo.setText(\查询\

searchInfo.setFont(new Font(\

contentPane.add(searchInfo); =

}

/**

* 返回选择的学号 */

public String getCnum(){ }

return (String)this.selectCnum.getSelectedItem(); /** * 事件处理 */

public void actionPerformed(ActionEvent e) { }

Object obj = e.getSource(); if (obj == selectCnum) { //退出 this.dispose(); }

else if (obj == searchInfo) { //修改 this.dispose(); } }

selectCnum.addActionListener(this); searchInfo.addActionListener(this);

//////////////////////////////////CourseSearchCname.java//////////////////////

import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.net.*; /**

* 课程信息查询模块

* 根据课程名称查询课程的信息

*/

public class CourseSearchCname extends JFrame implements ActionListener{

Container contentPane;

//框架的大小

Dimension faceSize = new Dimension(300, 100); JLabel jLabel1 = new JLabel();

JTextField cName = new JTextField(8); JButton searchInfo = new JButton();

public CourseSearchCname() { //设置标题

this.setTitle(\按课程名称查询\ this.setResizable(false);

//设置程序图标

this.setIconImage(getImage(\ try { Init();

}

catch (Exception e) { e.printStackTrace(); }

//设置运行位置，使对话框居中 Dimension

screenSize

Toolkit.getDefaultToolkit().getScreenSize();

this.setLocation( (int) (screenSize.width - 400) / 2 ,

(int) (screenSize.height - 300) / 2 + 45);

}

private void Init() throws Exception { this.setSize(faceSize);

contentPane = this.getContentPane(); contentPane.setLayout(new FlowLayout()); jLabel1.setText(\请输入课程名称: \

jLabel1.setFont(new Font(\ contentPane.add(jLabel1); cName.setText(null);

cName.setFont(new Font(\ contentPane.add(cName);

searchInfo.setText(\确定\

searchInfo.setFont(new Font(\ contentPane.add(searchInfo);

searchInfo.addActionListener(this); } /**

* 事件处理

=

}

*/

public void actionPerformed(ActionEvent e) { } /**

* 通过给定的文件名获得图像 */

Image getImage(String filename) { }

URLClassLoader urlLoader = (URLClassLoader)this.getClass().

getClassLoader(); URL url = null; Image image = null;

url = urlLoader.findResource(filename);

image = Toolkit.getDefaultToolkit().getImage(url); MediaTracker mediatracker = new MediaTracker(this); try { }

catch (InterruptedException _ex) { }

if (mediatracker.isErrorID(0)) { }

return image;

image = null; image = null;

mediatracker.addImage(image, 0); mediatracker.waitForID(0); Object obj = e.getSource();

if (obj == searchInfo) { //查询 ResultCourse rC = new ResultCourse(\ }

this.dispose();

//////////////////////////////////CourseSearchCteacher.java//////////////////////

import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.net.*; /**

* 课程信息查询模块

* 根据授课教师查询课程的信息

*/