Issue448Ext.java

// Test case for issue 448:
// https://github.com/typetools/checker-framework/issues/448
// @below-java8-jdk-skip-test

import java.util.Arrays;
import java.util.function.IntPredicate;
import java.util.stream.IntStream;

class Issue448Ext {
    void getFor(int[] ia, int index) {
        Arrays.stream(ia).filter(x -> true);
    }

    Object getFor(int[] ia, IntPredicate p) {
        return Arrays.stream(ia).filter(p);
    }

    Object getFor(IntStream is, int index) {
        return is.filter(key -> key == index)
                .findFirst()
                .orElseThrow(IllegalArgumentException::new);
    }
}