Affects PMD Version: 7.0.0
Rule: UnnecessaryBoxing
Description: PMD reports "Unnecessary explicit conversion from Integer to Long" violation, but removing the explicit conversion will break compilation.
Code Sample demonstrating the issue:
@SuppressWarnings({"PMD.SystemPrintln", "PMD.NoPackage"})
public final class UnnecessaryBoxing {
private UnnecessaryBoxing() {
}
public static void addLong(Long parameter) {
System.out.println("parameter = " + parameter);
}
public static Integer getValue() {
return 42;
}
public static void main(String[] args) {
addLong(Long.valueOf(getValue())); // PMD complains: "Unnecessary explicit conversion from Integer to Long"
//addLong(getValue()); // Does not compile: "incompatible types: Integer cannot be converted to Long"
}
}
Expected outcome:
PMD reports a violation at line 16 (see comment), but that's wrong. That's a false positive.
Running PMD through: Gradle
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