hiifong/pmd
1
0
Fork 0
forked from phoedos/pmd
Code Pull Requests Activity

Update documentation

Browse Source 
TRAVIS_JOB_NUMBER=3177.1
TRAVIS_COMMIT_RANGE=c9bdcf6ef6e9...16c7017aa923
This commit is contained in:
Travis CI (pmd-bot)
2018-12-08 19:37:25 +00:00
parent 16c7017aa9
commit 98c5de8949
1 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
docs/pages/pmd/rules/java/performance.md
View File

@ -121,15 +121,23 @@ public class Test {
**Minimum Language Version:** Java 1.7
The FileInputStream and FileOutputStream classes contains a finalizer method which will cause garbage collection pauses. See [JDK-8080225](https://bugs.openjdk.java.net/browse/JDK-8080225) for details.
The FileInputStream and FileOutputStream classes contains a finalizer method which will cause garbage
collection pauses.
See [JDK-8080225](https://bugs.openjdk.java.net/browse/JDK-8080225) for details.
The FileReader and FileWriter constructors instantiate FileInputStream and FileOutputStream, again causing garbage collection issues while finalizer methods are called.
The FileReader and FileWriter constructors instantiate FileInputStream and FileOutputStream,
again causing garbage collection issues while finalizer methods are called.
* Use `Files.newInputStream(Paths.get(fileName))` instead of `new FileInputStream(fileName)`.
* Use `Files.newOutputStream(Paths.get(fileName))` instead of `new FileOutputStream(fileName)`.
* Use `Files.newBufferedReader(Paths.get(fileName))` instead of `new FileReader(fileName)`.
* Use `Files.newBufferedWriter(Paths.get(fileName))` instead of `new FileWriter(fileName)`.
Please note, that the `java.nio` API does not throw a `FileNotFoundException` anymore, instead
it throws a `NoSuchFileException`. If your code dealt explicitly with a `FileNotFoundException`,
then this needs to be adjusted. Both exceptions are subclasses of `IOException`, so catching
that one covers both.
**This rule is defined by the following XPath expression:**
``` xpath
//PrimaryPrefix/AllocationExpression/ClassOrInterfaceType[