我在用JAVA编写的有关SQL数据库的程序时,出现了一些错误:
java.sql.SQLException: No suitable driver
        at java.sql.DriverManager.getConnection(DriverManager.java:532)
        at java.sql.DriverManager.getConnection(DriverManager.java:171)
        at CreatTableTest.getConnection(CreatTableTest.java:103)
        at CreatTableTest.main(CreatTableTest.java:28)
Exception in thread "main" java.lang.NullPointerException
        at CreatTableTest.createTable(CreatTableTest.java:41)
        at CreatTableTest.main(CreatTableTest.java:29)
我已经按照高手们告诉我的,将SQL驱动安装好了,但还是出现了这种错误,是不是我还有什么工作没有做到呢?还是什么原因,请各位大师没指教@