delcoursepanel.java

您的文件包然后写出其具体功能(至少要20个字)。尽量不要让站长把时间都花费在为您

package Panel.UserManage;

import java.util.*;
import javax.swing.*;

import Sys.vo.*;
import Sys.dao.*;

public class DelCoursePanel extends javax.swing.JPanel {
	private static final long serialVersionUID = 1L;
	public DelCoursePanel() {
		initComponents();
	}

	private void initComponents() {
		java.awt.GridBagConstraints gridBagConstraints;

		jLabel1 = new javax.swing.JLabel();
		jLabel2 = new javax.swing.JLabel();
		jComboBox1 = new javax.swing.JComboBox();
		jScrollPane1 = new javax.swing.JScrollPane();
		jTextArea1 = new javax.swing.JTextArea();
		jButton1 = new javax.swing.JButton();
		jLabel3 = new javax.swing.JLabel();
		jTextField1 = new javax.swing.JTextField();

		setLayout(new java.awt.GridBagLayout());

		jLabel1.setFont(new java.awt.Font("宋体", 1, 24));
		jLabel1.setText("\u5220\u9664\u8bfe\u7a0b\u4fe1\u606f");
		gridBagConstraints = new java.awt.GridBagConstraints();
		gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
		gridBagConstraints.weightx = 5.0;
		gridBagConstraints.weighty = 0.1;
		add(jLabel1, gridBagConstraints);

		jLabel2.setFont(new java.awt.Font("宋体", 0, 14));
		jLabel2.setText("\u8bf7\u9009\u62e9\u8981\u5220\u9664\u7684\u8bfe\u7a0b");
		gridBagConstraints = new java.awt.GridBagConstraints();
		gridBagConstraints.weightx = 5.0;
		gridBagConstraints.weighty = 0.1;
		add(jLabel2, gridBagConstraints);
		
		jComboBox1.setPreferredSize(new java.awt.Dimension(130, 23));
		jComboBox1.addItemListener(new java.awt.event.ItemListener() {
			public void itemStateChanged(java.awt.event.ItemEvent evt) {
				jComboBox1ItemStateChanged(evt);
			}
		});
		
		gridBagConstraints = new java.awt.GridBagConstraints();
		gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
		gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
		gridBagConstraints.weightx = 5.0;
		gridBagConstraints.weighty = 0.1;
		add(jComboBox1, gridBagConstraints);

		jScrollPane1.setBorder(javax.swing.BorderFactory.createTitledBorder(
				null, "\u8bfe\u7a0b\u4ecb\u7ecd",
				javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION,
				javax.swing.border.TitledBorder.DEFAULT_POSITION,
				new java.awt.Font("宋体", 0, 12), new java.awt.Color(0, 0, 0)));
		jScrollPane1.setPreferredSize(new java.awt.Dimension(600, 120));

		jTextArea1.setColumns(20);
		jTextArea1.setRows(5);
		jScrollPane1.setViewportView(jTextArea1);

		gridBagConstraints = new java.awt.GridBagConstraints();
		gridBagConstraints.gridx = 0;
		gridBagConstraints.gridy = 3;
		gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
		gridBagConstraints.weightx = 5.0;
		gridBagConstraints.weighty = 0.1;
		add(jScrollPane1, gridBagConstraints);

		jButton1.setFont(new java.awt.Font("宋体", 0, 14));
		jButton1.setText("\u786e\u5b9a");
		jButton1.addActionListener(new java.awt.event.ActionListener() {
			public void actionPerformed(java.awt.event.ActionEvent evt) {
				jButton1ActionPerformed(evt);
			}
		});
		gridBagConstraints = new java.awt.GridBagConstraints();
		gridBagConstraints.gridx = 0;
		gridBagConstraints.gridy = 4;
		gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
		gridBagConstraints.weightx = 5.0;
		gridBagConstraints.weighty = 0.1;
		add(jButton1, gridBagConstraints);

		jLabel3.setFont(new java.awt.Font("宋体", 0, 14));
		jLabel3.setText("\u8bfe\u7a0b\u5f00\u59cb\u65f6\u95f4");
		gridBagConstraints = new java.awt.GridBagConstraints();
		gridBagConstraints.gridx = 0;
		gridBagConstraints.gridy = 2;
		gridBagConstraints.weightx = 5.0;
		gridBagConstraints.weighty = 0.1;
		add(jLabel3, gridBagConstraints);

		jTextField1.setColumns(20);
		gridBagConstraints = new java.awt.GridBagConstraints();
		gridBagConstraints.gridx = 1;
		gridBagConstraints.gridy = 2;
		gridBagConstraints.gridwidth = java.awt.GridBagConstraints.REMAINDER;
		gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
		gridBagConstraints.weightx = 5.0;
		gridBagConstraints.weighty = 0.1;
		add(jTextField1, gridBagConstraints);
		
		CourseDao coursedao=new CourseDao();
		List<Course> courselist=coursedao.getAllCourse();
		Iterator<Course> iter=courselist.iterator();
		while(iter.hasNext()){
			jComboBox1.addItem(iter.next().getCourseName());
		}
	}
	
	private void jComboBox1ItemStateChanged(java.awt.event.ItemEvent evt) {

		//要先移除JComboBox的东西，再添加
	}
	
	private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
		// TODO add your handling code here:
		String coursename=jComboBox1.getSelectedItem().toString().trim();
		StudentSroceDao studentsrocedao=new StudentSroceDao();
		boolean b=studentsrocedao.getCourseStudentID(coursename);
		if(b){
			CourseDao coursedao=new CourseDao();
			coursedao.delCourse(coursename);
			CourseClassDao courseclassdao=new CourseClassDao();
			courseclassdao.delCourseClass(coursename);
		}else
			JOptionPane.showMessageDialog(null, "对不起，课程成绩已经开始记录，不能删除");
	}

	private javax.swing.JButton jButton1;
	private javax.swing.JComboBox jComboBox1;
	private javax.swing.JLabel jLabel1;
	private javax.swing.JLabel jLabel2;
	private javax.swing.JLabel jLabel3;
	private javax.swing.JScrollPane jScrollPane1;
	private javax.swing.JTextArea jTextArea1;
	private javax.swing.JTextField jTextField1;
}