Resource management

'Channel' opened but not safely closed  

Java

AutoCloseable used without 'try'-with-resources  

Java

Hibernate resource opened but not safely closed  

Java

I/O resource opened but not safely closed  

Java

JDBC resource opened but not safely closed  

Java

JNDI resource opened but not safely closed  

Java

Socket opened but not safely closed  

Java

Use of 'DriverManager' to get JDBC connection  

Java