JAVA学生管理系统 第6页
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
*/
public class CourseSearchCteacher extends JFrame implements ActionListener{
Container contentPane;
//框架的大小
Dimension faceSize = new Dimension(300, 100);
JLabel jLabel1 = new JLabel();
JTextField cTeacher = new JTextField(8);
JButton searchInfo = new JButton();
public CourseSearchCteacher() {
//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("icon.gif"));
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("请输入授课教师名称: ");
jLabel1.setFont(new Font("Dialog",0,12));
contentPane.add(jLabel1);
cTeacher.setText(null);
cTeacher.setFont(new Font("Dialog",0,12));
contentPane.add(cTeacher);
searchInfo.setText("确定");
searchInfo.setFont(new Font("Dialog",0,12));
contentPane.add(searchInfo);
searchInfo.addActionListener(this);
}
/**
* 事件处理
*/
public void actionPerformed(ActionEvent e) {
Object obj = e.getSource();
if (obj == searchInfo) { //查询
ResultCourse rC = new ResultCourse("cteacher",cTeacher.getText());
this.dispose();
}
}
/**
* 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 {
mediatracker.addImage(image, 0);
mediatracker.waitForID(0);
}
catch (InterruptedException _ex) {
image = null;
}
if (mediatracker.isErrorID(0)) {
image = null;
}
return image; }}