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class OnArrayTest {
interface Cln {
Object m(int[] i);
}
interface IA {
void m(int i);
}
interface I {
void m(int[] i);
}
interface Len<T> {
int len(T[] ta);
}
interface ToStr<T> {
String _(T[] ta);
}
interface ArrayReturnType<T> {
T make(int size);
}
static class Foo<X> { }
interface ObjectArrayReturnType {
Object make(int size);
}
public static void main(String[] args) {
Cln s = int[]::clone;
IA a = int[]::new;
<error descr="Incompatible types. Found: '<method reference>', required: 'OnArrayTest.I'">I i = int[]::new;</error>
Len<String> strLen = String[]::<error descr="Cannot resolve method 'length'">length</error>;
ToStr<Integer> toStr = Integer[]::toString;
ArrayReturnType<String[]> a1 = String[]::new;
ArrayReturnType<String[][]> a2 = String[][]::new;
<error descr="Incompatible types. Found: '<method reference>', required: 'OnArrayTest.ArrayReturnType<java.lang.String[]>'">ArrayReturnType<String[]> a3 = int[]::new;</error>
ObjectArrayReturnType a4 = Foo<?>[]::new;
ObjectArrayReturnType a5 = <error descr="Generic array creation">Foo<? extends String>[]</error>::new;
}
}
class IDEA106973 {
interface Function<T, R> {
R apply(T t);
}
{
Function<Integer, String[]> a = String[] :: new;
<error descr="Incompatible types. Found: '<method reference>', required: 'IDEA106973.Function<java.lang.String,java.lang.String[]>'">Function<String, String[]> a1 = String[] :: new;</error>
Function<Short, String[]> a2 = String[] :: new;
}
}
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