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作者	请教是什么错误？？ (does not define method prepareStatement(String, String[]))
sc33 版主发贴: 128 积分: 30	于 2003-04-25 17:35 "conn.java": Error #: 454 : class sys.Conn should be declared abstract; it does not define method prepareStatement(java.lang.String, java.lang.String[]) in interface java.sql.Connection at line 10, column 8 why edited on 2003-06-22 00:07

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Re:请教是什么错误？？ [Re:sc33]

Biubiu

Pure Java

总版主

发贴: 471
积分: 50

于 2003-04-25 18:00

sc33 wrote:
"conn.java": Error #: 454 : class sys.Conn should be declared abstract; it does not define method prepareStatement(java.lang.String, java.lang.String[]) in interface java.sql.Connection at line 10, column 8

学Java之前我们得先学英文哦。

In theory, there is no difference between theory and practice; in practice, however, there is.

If the only tool you have is a hammer, you tend to see every problem as a nail.

作者	Re:请教是什么错误？？ [Re:sc33]
jiangns3000 发贴: 0 积分: 0	于 2003-04-25 18:21 你应该帖一下代码，才能更准确。该信息使人猜测，类sys.Conn实现了java.sql.Connection接口但却没有给其中方法 prepareStatement(java.lang.String, java.lang.String[])给出代码，故要求该必须定义为abstract。以上仅是猜测。没有代码只能猜。

作者

Re:请教是什么错误？？ [Re:sc33]

snowbug

CJSDN高级会员

发贴: 418
积分: 130

于 2003-04-25 23:02

Looks like you are writing an implementation class for the JDBC Connection interface under JDK 1.4.

The method: prepareStatement(java.lang.String, java.lang.String[]) is introduced in JDK 1.4. Many JDBC drivers may not have that method implemented yet. However, you should be able to use those drivers without any problem as long as you dont invoke that method. But if you are compiling the JDBC classes, you will need to make sure this method is implemented.

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