用Java开发C/S应用（六）：swt中连接数据库

连接数据库的话，需要先把jar包拷到应用中去，我连的是oracle数据库，使用ojdbc14.jar包

                try {
                    Class.forName("oracle.jdbc.driver.OracleDriver").newInstance(); 
                    Connection conn= DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:orcl","username","password"); 
                    Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE); 
                    String sql="select * from table1"; 
                    ResultSet rs=stmt.executeQuery(sql); 
                    while(rs.next())
                    {
                        System.out.println(rs.getString("FieldName"));
                    }
                    rs.close(); 
                    stmt.close(); 
                    conn.close();
                } catch (Exception e1) {
                    e1.printStackTrace();
                } 

代码很简单，就是普通的查询表的功能，这里就不做介绍了