Quelle EnsureCapacity.java Sprache: JAVA

/*
* Copyright (c) 2010, 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.
*
* 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 6992121
* @summary Test the ArrayList.ensureCapacity() and Vector.ensureCapacity
*    method with negative minimumCapacity input argument.
*/

import java.util.ArrayList;
import java.util.Vector;

public class EnsureCapacity {
    public static void main(String[] args) {
        testArrayList();
        testVector();
    }

    private static void checkCapacity(int before, int after) {
        if (before != after) {
            throw new RuntimeException("capacity is expected to be unchanged: " +
                "before=" + before + " after=" + after);
        }
    }

    private static void testArrayList() {
        ArrayList<String> al = new ArrayList<String>();
        al.add("abc");
        al.ensureCapacity(Integer.MIN_VALUE);

        // there is no method to query the capacity of ArrayList
        // so before and after capacity are not checked
    }

    private static void testVector() {
        Vector<String> vector = new Vector<String>();
        vector.add("abc");

        int cap = vector.capacity();
        vector.ensureCapacity(Integer.MIN_VALUE);
        checkCapacity(cap, vector.capacity());
    }
}

quality96%

¤ Dauer der Verarbeitung: 0.9 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.