java frame 贪吃蛇 derby

 

 

 

 

 

 操作derby 数据库

@Test
public void OneTest() throws ClassNotFoundException, SQLException {
   Class.forName("org.apache.derby.jdbc.EmbeddedDriver");//加载驱动
   con = DriverManager.getConnection("jdbc:derby:loginDB;create=true");//连接名为sqm的数据库
   sql = con.createStatement();

   rs  = con.getMetaData().getTables(null, null,  "students", null );//判断students表格是否存在
   sql.execute("delete from users ");//清空
   System.out.println("清空成功----");

}