Java example source code file (MethodReferenceNullCheckTest.java)

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Java - Java tags/keywords

methodreferencenullchecktest, npe, nullpointerexception, string, supplier

The MethodReferenceNullCheckTest.java Java example source code

/*
 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/**
 * @test
 * @bug 8024696
 * @summary Missing null check in bound method reference capture
 */

import com.sun.tools.javac.util.Assert;
import java.util.function.*;

public class MethodReferenceNullCheckTest {
    public static void main(String[] args) {
        String s = null;
        boolean npeFired = false;
        try {
            Supplier<Boolean> ss = s::isEmpty;
        } catch (NullPointerException npe) {
            npeFired = true;
        } finally {
            Assert.check(npeFired, "NPE should have been thrown");
        }
    }
}