public static void main(String[] args) {		// TODO Auto-generated method stub		 String url = "jdbc:jtds:sqlserver://127.0.0.1:1433;databaseName=base_name;user=sa;password= pas";//sa身份连接    		    	    	        Connection con = null;    	        Statement stmt = null;    	        //ResultSet rs = null;    	        boolean rs ;	        try {    	            Class.forName("net.sourceforge.jtds.jdbc.Driver");    	            con = DriverManager.getConnection(url);  	            stmt = con.createStatement();    	            System.out.println("end.");    	            String sql1="drop table aa";	            rs = stmt.execute( sql1);  	            System.out.println("我删除了一张表");	            String SQL = "create table aa(" +	            		"	id	int 	null," +	            			"currdate	date null,)";    	         	            rs = stmt.execute(SQL); 	            System.out.println("我创建了一张表");	           // rs = stmt.executeQuery(SQL);    	    	          /*  while (rs.next()) {    	                System.out.println(rs.getString(4) + " " + rs.getString(6));    	            }   */ 	        }    	    	        catch (Exception e) {    	            e.printStackTrace();    	        }    	    	        finally {    	        	/*if(rs!=null){	        		rs.colse();	        	}*/	            if (stmt != null)    	                try {    	                    stmt.close();    	                } catch (Exception e) {    	                }    	            if (con != null)    	                try {    	                    con.close();    	                } catch (Exception e) {    	                }    	        }    	}