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This commit is contained in:
Juan Martín Sotuyo Dodero
2017-12-08 00:54:48 -03:00
parent 3817dc2782
commit 0f9e521ea7
2 changed files with 9 additions and 5 deletions
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2
docs/pages/pmd/rules/java.md
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@ -294,7 +294,7 @@ folder: pmd/rules
* [AddEmptyString](pmd_rules_java_performance.html#addemptystring): The conversion of literals to strings by concatenating them with empty strings is inefficient.It ...
* [AppendCharacterWithChar](pmd_rules_java_performance.html#appendcharacterwithchar): Avoid concatenating characters as strings in StringBuffer/StringBuilder.append methods.
* [AvoidArrayLoops](pmd_rules_java_performance.html#avoidarrayloops): Instead of manually copying data between two arrays, use the efficient System.arraycopy method in...
* [AvoidFileStream](pmd_rules_java_performance.html#avoidfilestream): Use Files.newInputStream(Paths.get(fileName)) instead of new FileInputStream(fileName).Use Files....
* [AvoidFileStream](pmd_rules_java_performance.html#avoidfilestream): The FileInputStream and FileOutputStream classes contains a finalizer method which will cause gar...
* [AvoidInstantiatingObjectsInLoops](pmd_rules_java_performance.html#avoidinstantiatingobjectsinloops): New objects created within loops should be checked to see if they can created outside them and re...
* [AvoidUsingShortType](pmd_rules_java_performance.html#avoidusingshorttype): Java uses the 'short' type to reduce memory usage, not to optimize calculation. In fact, the JVM ...
* [BigIntegerInstantiation](pmd_rules_java_performance.html#bigintegerinstantiation): Don't create instances of already existing BigInteger (BigInteger.ZERO, BigInteger.ONE) andfor Ja...

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docs/pages/pmd/rules/java/performance.md
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@ -117,10 +117,14 @@ public class Test {
**Minimum Language Version:** Java 1.7
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).
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.
* 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)`.
```
//PrimaryPrefix/AllocationExpression/ClassOrInterfaceType[