测试Java连接Oracle是否成功

Java连接Oracle代码：

package telecom.util;

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

public class DBUtil {
 private final static String driverClass = "oracle.jdbc.driver.OracleDriver";//驱动类
 private final static String url = "jdbc:oracle:thin:@localhost:1521:orcl";//url
 private final static String user = "joke";//用户名
 private final static String pass = "abc";//密码
 private static Connection conn = null;
 public static void main(String[] args){
  
 }

//静态代码块
 static{
  try {
   Class.forName(driverClass);//注册驱动
  } catch (ClassNotFoundException e) {
   e.printStackTrace();
  }
  
  try {
   conn = DriverManager.getConnection(url, user, pass);//取得连接
   System.out.println("连接成功，其哈希码是："+conn.hashCode());
  } catch (SQLException e) {
   e.printStackTrace();
  }
 }
 
}

输出结果：连接成功，其哈希码是：10053659