JDBC获取单利模式类

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

/**
 * @author Administrator
 *
 */
public class JdbcUtil
{

 private String url = "jdbc:sqlserver://localhost:1433;databaseName=dboName";
 private String user = "sa";
 private String pwd = "123456";

 public static JdbcUtil getJdbcUtil()
 {
  return jdbcUtil;
 }

 private static JdbcUtil jdbcUtil = new JdbcUtil();

 private JdbcUtil()
 {
 }

 static
 {
  try
  {
   Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
  } catch (ClassNotFoundException e)
  {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }

 public Connection getConnection() throws SQLException
 {
  return DriverManager.getConnection(url, user, pwd);

 }
}