Spring
From APIDesign
Spring is very popular enterprise Java framework. I am not its user or big fan, so I am not afraid to conclude that it is the sole reasons why:
- each enterprise error report contains at least 90% of useless reflection related stacktrace lines
 - it is impossible to debug the XML based configuration
 - it takes seconds before Java enterprise application starts (compared to few ms before a NodeJS app starts)
 - users coding in other languages think Java is crazy (think of BeanFactory, BeanFactoryFactory, etc.)
 
The Spring framework is one of the reasons why Java is becoming the new COBOL!