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 ...

Java exception handling with stack traces, exception chaining, try-with-resources, final re-throw, and StackWalker.

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 .

Here's how to use JDBC to marry Java's versatility with the SQL Server database and create high-performing, scalable and secure applications.