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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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UseCollectionIsEmpty
UseCollectionIsEmpty
The isEmpty() method on java.util.Collection is provided to see if a collection has any elements.
Comparing the value of size() to 0 merely duplicates existing behavior.
This rule is defined by the following Java class:
net.sourceforge.pmd.rules.design.UseCollectionIsEmpty
Example:
public class Foo {
void good() {
List foo = getList();
if (foo.isEmpty()) {
// blah
}
}
void bad() {
List foo = getList();
if (foo.size() == 0) {
// blah
}
}
}