/*
*
* Copyright $year McDowell
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* /
*/
package uk.kludje.test.sample;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import static uk.kludje.fn.nary.UTriFunction.asUTriFunction;
public class ArbitraryInterfaces {
public void invoke() throws IOException {
call(asUTriFunction(this::download)::apply);
}
/**This method doesn't work but it might throw an exception*/
@SuppressWarnings("try")
private boolean download(File target, URI source, Object ignored) throws IOException {
try (InputStream in = source.toURL().openStream()) {
return true;
}
}
private void call(Foo foo) {
foo.exec(new File("foo.txt"), URI.create("http://foo"), null);
}
public static interface Foo {
boolean exec(File a, URI b, Object x);
}
}