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import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.RandomAccess;
/**
* @since 4.37
* @author Jaroslav Tulach
*/
public class Utils {
/**
* Create a typesafe copy of a raw list.
* @param rawList an unchecked list
* @param type the desired supertype of the entries
* @param strict true to throw a ClassCastException if the raw list has an invalid entry,
* false to skip over such entries (warnings may be logged)
* @return a typed list guaranteed to contain only entries assignable
* to the named type (or they may be null)
* @throws ClassCastException if some entry in the raw list was not well-typed, and only if strict was true
*/
public static List checkedListByCopy(List rawList, Class type, boolean strict) throws ClassCastException {
List l = (rawList instanceof RandomAccess) ? new ArrayList(rawList.size()) : new LinkedList();
Iterator it = rawList.iterator();
while (it.hasNext()) {
Object e = it.next();
try {
l.add(type.cast(e));
} catch (ClassCastException x) {
if (strict) {
throw x;
} else {
System.out.println("not assignable ");
}
}
}
return l;
}
}