Describe the bug Trying to connect to an apache spark cluster on my local network, and it fails with 'void org.apache.thrift.transport.THttpClient.<init> (java.lang.String, ...

User class threw exception: java.lang.NoSuchMethodError: org.apache.spark.sql.jdbc.JdbcDialect.createConnectionFactory #229 ...

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.

I have a SQL server that only recently started failing with timeout exceptions. It is an older box and we are using it for more and more things. Before I write it off as a hardware/perf issue, I ...

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 ...

There are some minor potential dangers associated with Groovy's def keyword . The Groovy style and language feature guidelines for Java developers provides some warnings about use of def .

An exception handler is code that stipulates what a program will do when an exceptional event disrupts the normal flow of the program. Learn more here.

Before it sued Google for copying from Java, Oracle got rich copying IBM’s SQL Oracle's history highlights a possible downside to its stance on API copyrights.

Writing succinct and elegant JDBC code can be difficult. You have to create a few different objects and catch numerous checked exceptions, even if you can't reasonably recover from them.