I came across an error，cause an exception when I use "java/sql/Statement" in jdk 11，but jdk 8 doesn t have this problem. I was very confused for this. //this my exception log. Exception in thread ...

The Java platform includes a variety of language features and library types for dealing with exceptions, which are divergences from expected program behavior.In my previous article, you learned ...

当前使用版本(必须填写清楚，否则不予处理) mybatis-plus-boot-starter mybatis-plus-generator 版本都是 3.1.1 mysql 5.7.25 ...

Learn what causes null pointer exceptions in Java, how to identify them, and how to fix them with simple techniques and best practices. Also, learn how to test and learn more about them.

Null pointer exception is an “exception” (error) that is particularly common when programming in Java. For a beginner, this is a confusing and daunting message to receive, but it can be just ...

In this blog post, I demonstrate an advantage of being more explicit in typing when using Groovy SQL with an Oracle database to avoid a potential “Invalid column index” SQLException because I ...

In this Microsoft SQL Server and JDBC tutorial, you'll learn how to connect to a Microsoft SQL Server in Java using JDBC. The steps are relatively straightforward: Each database is different, so ...