deletecourseaction.java

java(Swing) access做的成绩管理系统

package edu.xscj.action;

import java.sql.Connection;
import edu.xscj.conn.ConnectDataBase;
import java.sql.PreparedStatement;

public class DeleteCourseAction {
    Connection conn = null;

    public DeleteCourseAction() {
        if (conn == null) {
            conn = ConnectDataBase.getConn();
        }
    }

    public void setConn() {
        if (conn == null) {
            conn = ConnectDataBase.getConn();
        }
    }

    public void deleteCourse(String courNo) {
        PreparedStatement pstmt = null;
        try {
            if (conn == null) {
                this.setConn();
            }
            pstmt = conn.prepareStatement("delete from course where courNo=?");
            pstmt.setString(1, courNo);
            pstmt.execute();
        } catch (Exception ex) {
        } finally {
            try {
                if (pstmt != null) {
                    pstmt.close();
                }
                if (conn != null) {
                    conn.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }


}