jdbc oracle和mysql连接

oracle

private static final String URL = "jdbc:oracle:thin:@localhost:1521:orcl";
private static final String USERNAME = "用户名";
 private static final  String PWD = "密码";

导入驱动Class.forName("oracle.jdbc.OracleDriver");

　　mysql

private static final String URL = "com.mysql.jdbc.Driver";
private static final String USERNAME = "用户名";
 private static final  String PWD = "密码";

导入驱动
Class.forName("com.jdbc.msyql.Driver")