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Sanity4J was created to simplify running multiple static code analysis tools on the Java projects. It provides a single entry point to run all the selected tools and produce a consolidated report, which presents all findings in an easily accessible manner.

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LongInstantiation

LongInstantiation

Calling new Long() causes memory allocation that can be avoided by the static Long.valueOf(). It makes use of an internal cache that recycles earlier instances making it more memory efficient.



//PrimaryPrefix
/AllocationExpression
[not (ArrayDimsAndInits)
and (ClassOrInterfaceType/@Image='Long'
or ClassOrInterfaceType/@Image='java.lang.Long')]


Example(s):



public class Foo {
	private Long i = new Long(0); // change to Long i = Long.valueOf(0);
}