dennis lucero created NETBEANS-3755:
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Summary: "Can use functional operations" hint creates uncompilable
code with nested loops (Unexpected return value)
Key: NETBEANS-3755
URL: https://issues.apache.org/jira/browse/NETBEANS-3755
Project: NetBeans
Issue Type: Bug
Components: java - Hints
Affects Versions: 11.2
Environment: OpenJDK 13+33
Reporter: dennis lucero
Consider this code:
{code:java}
private static boolean deepContains(
final String needle,
final Collection<Collection<String>> haystack) {
for (final Collection<String> hay : haystack) {
for (final String check : hay) {
if (check.equals(needle)) {
return true;
}
}
}
return false;
}
{code}
NetBeans suggests to replace the outer loop with with a functional operation,
resulting in
{code:java}
private static boolean deepContains(
final String needle,
final Collection<Collection<String>> haystack) {
haystack.forEach((hay) -> {
for (final String check : hay) {
if (check.equals(needle)) {
return true;
}
}
});
return false;
}
{code}
This does not compile. Error messages:
For the outer loop:
{quote}incompatible types: unexpected return value
{quote}
For the inner loop:
{quote}for-each not applicable to expression type
required: array or java.lang.Iterable
found: T
where T is a type-variable:
T extends Object declared in interface Iterable
{quote}
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