myeclipse连接SQL server 2012

package jdbc;
import java.io.*;
import java.util.*;
import java.sql.Statement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class jdbc {

 public static void main(String[] args) {
  jdbc();}
 static void jdbc()
 {
 try{
   Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");                           
   System.out.println("加载驱动成功");
   String url="jdbc:sqlserver://localhost:1433;DatabaseName=GreenHome";
    Connection conn=DriverManager.getConnection(url, "sa", "123");
   System.out.println("连接成功：");
   Statement stmt=conn.createStatement();
      String sql=sql();                  
   stmt.execute(sql);
   stmt.close();
    conn.close();
   }                //异常处理
   catch (ClassNotFoundException e) {
      e.printStackTrace();
  } catch (SQLException e) {
     e.printStackTrace();
  }
   
 }
  //输入要执行的sql语句
 static String sql()
 {
  Scanner input= new Scanner(System.in);
  String sql=input.nextLine();
  return sql;
 }
 }