Sonar qube is giving me the following error: Use try-with-resources or close this “Stream” in a “finally” clause This is my code: How can I fix this error? Answer define and open your stream this way: Doing this, the system will automatically close the stream and you don’t need t…
Tag: try-with-resources
Is try-with-resource not safe when declaring multiple effectively final resources?
Since Java 9 we can use effectively final variables in try-with-resources. The example below presents a situation where one of the resources initialization throws an exception. When I run this example, the only output I get is a RuntimeException, meaning that Resource1 was not closed. That was expected, since…
try-finally with close auto-refactoring to try-with-resources with codestyle/checkstyle
I am working on a codebase that has recently migrated from Java 6 to Java 7. I would like to replace constructions like this: Connection conn = null; try{ conn = new Connection(); … } catch(…
Is the close method on a try-with-resources idiom not called if a constructor throws an exception?
I have a base class Base and a child class Child which extends it. Base implements java.lang.AutoCloseable. Let’s suppose that the constructor for Child throws a Foo. Now consider Is the Base#close method called if the exception is thrown? It is not on my machine, but is this something that the JLS has …
Why write Try-With-Resources without Catch or Finally?
Why write Try without a Catch or Finally as in the following example? Answer As explained above this is a feature in Java 7 and beyond. try with resources allows to skip writing the finally and closes all the resources being used in try-block itself. As stated in Docs Any object that implements java.lang.Auto…