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class BBB {
static <T> void f() {
TerminalOp<T, LinkedHashSet<T>> <warning descr="Variable 'reduceOp' is never used">reduceOp</warning> = BBB.<T, LinkedHashSet<T>>makeRef(LinkedHashSet::new, LinkedHashSet::add, LinkedHashSet::addAll);
}
public static <T, U> TerminalOp<T, U> makeRef(U <warning descr="Parameter 'seed' is never used">seed</warning>, BiFunction<U, ? super T, U> <warning descr="Parameter 'reducer' is never used">reducer</warning>, BinaryOperator<U> <warning descr="Parameter 'combiner' is never used">combiner</warning>) {
return null;
}
public static <T, R> TerminalOp<T, R> makeRef(Supplier<R> <warning descr="Parameter 'seedFactory' is never used">seedFactory</warning>, BiConsumer<R, ? super T> <warning descr="Parameter 'accumulator' is never used">accumulator</warning>, BiConsumer<R,R> <warning descr="Parameter 'reducer' is never used">reducer</warning>) {
return null;
}
public static void main(String[] args) {
f();
}
}
interface Supplier<T> {
T get();
}
interface BiFunction<T, U, R> {
R apply(T t, U u);
}
interface BinaryOperator<T> extends BiFunction<T,T,T> {}
interface BiConsumer<T, U> {
void accept(T t, U u);
}
interface TerminalOp<<warning descr="Type parameter 'E_IN' is never used">E_IN</warning>, <warning descr="Type parameter 'R' is never used">R</warning>> {}
class LinkedHashSet<E> extends HashSet<E>{
public LinkedHashSet(int <warning descr="Parameter 'initialCapacity' is never used">initialCapacity</warning>, float <warning descr="Parameter 'loadFactor' is never used">loadFactor</warning>) {
}
public LinkedHashSet(int <warning descr="Parameter 'initialCapacity' is never used">initialCapacity</warning>) {
}
public LinkedHashSet() {
}
}
class HashSet<E> extends AbstractSet<E> {
public HashSet() {
}
public HashSet(int <warning descr="Parameter 'initialCapacity' is never used">initialCapacity</warning>, float <warning descr="Parameter 'loadFactor' is never used">loadFactor</warning>) {
}
public HashSet(int <warning descr="Parameter 'initialCapacity' is never used">initialCapacity</warning>) {
}
HashSet(int <warning descr="Parameter 'initialCapacity' is never used">initialCapacity</warning>, float <warning descr="Parameter 'loadFactor' is never used">loadFactor</warning>, boolean <warning descr="Parameter 'dummy' is never used">dummy</warning>) {
}
public boolean add(E e) {
return true;
}
}
abstract class AbstractSet<E> extends AbstractCollection<E> {
/**
* Sole constructor. (For invocation by subclass constructors, typically
* implicit.)
*/
protected AbstractSet() {
}
}
abstract class AbstractCollection<E> implements Collection<E> {
public boolean add(E e) {
return true;
}
public boolean addAll(Collection<? extends E> <warning descr="Parameter 'c' is never used">c</warning>) {
boolean modified = false;
return modified;
}
}
interface Collection<<warning descr="Type parameter 'E' is never used">E</warning>> {}
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