langtools/test/tools/javac/lambda/MethodReference59.java

/*
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 * 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.
 *
 * 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.
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 */

/*
 * @test
 * @bug 8004102
 * @summary Add support for array constructor references
 */
public class MethodReference59 {

    static int assertionCount = 0;

    static void assertTrue(boolean cond) {
        assertionCount++;
        if (!cond)
            throw new AssertionError();
    }

    interface ArrayFactory<X> {
        X make(int size);
    }

    public static void main(String[] args) {
        ArrayFactory<int[]> factory1 = int[]::new;
        int[] i1 = factory1.make(5);
        assertTrue(i1.length == 5);
        ArrayFactory<int[][]> factory2 = int[][]::new;
        int[][] i2 = factory2.make(5);
        assertTrue(i2.length == 5);
        assertTrue(assertionCount == 2);
    }
}