SSL Fill.java Interaktion und
PortierbarkeitJAVA

/*
* Copyright (c) 1998, 2006, 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 4090383
   @summary Ensure that BufferedInputStream's read method will fill the target
            array whenever possible
*/

import java.io.IOException;
import java.io.InputStream;
import java.io.BufferedInputStream;

public class Fill {

    /**
     * A simple InputStream that is always ready but may read fewer than the
     * requested number of bytes
     */
    static class Source extends InputStream {

        int shortFall;
        byte next = 0;

        Source(int shortFall) {
            this.shortFall = shortFall;
        }

        public int read() throws IOException {
            return next++;
        }

        public int read(byte[] buf, int off, int len) throws IOException {
            int n = len - shortFall;
            for (int i = off; i < n; i++)
                buf[i] = next++;
            return n;
        }

        public int available() {
            return Integer.MAX_VALUE;
        }

        public void close() throws IOException {
        }

    }

    /**
     * Test BufferedInputStream with an underlying source that always reads
     * shortFall fewer bytes than requested
     */
    static void go(int shortFall) throws Exception {

        InputStream r = new BufferedInputStream(new Source(shortFall), 10);
        byte[] buf = new byte[8];

        int n1 = r.read(buf);
        int n2 = r.read(buf);
        System.err.println("Shortfall " + shortFall
                           + ": Read " + n1 + ", then " + n2 + " bytes");
        if (n1 != buf.length)
            throw new Exception("First read returned " + n1);
        if (n2 != buf.length)
            throw new Exception("Second read returned " + n2);

    }

    public static void main(String[] args) throws Exception {
        for (int i = 0; i < 8; i++) go(i);
    }

}

quality88%

¤ Diese beiden folgenden Angebotsgruppen bietet das Unternehmen0.15Angebot Wie Sie bei der Firma Beratungs- und Dienstleistungen beauftragen können ¤

*Eine klare Vorstellung vom Zielzustand

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.

SSL Fill.java Interaktion und PortierbarkeitJAVA

¤ Diese beiden folgenden Angebotsgruppen bietet das Unternehmen0.15Angebot Wie Sie bei der Firma Beratungs- und Dienstleistungen beauftragen können ¤

Haftungshinweis

Bemerkung:

SSL Fill.java Interaktion und
PortierbarkeitJAVA