Quelle T8035104.java Sprache: JAVA

/*
* Copyright (c) 2014, 2016, 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 8035104
* @summary reorder class file attributes in javap listing
* @modules jdk.jdeps/com.sun.tools.javap
*/

import java.io.*;

public class T8035104 {
    public static void main(String[] args) throws Exception {
        new T8035104().run();
    }

    public void run() throws Exception {
        String[] lines = javap("-v", T8035104.class.getName()).split("[\r\n]+");
        int minor = -1;
        int SourceFile = -1;
        for (int i = 0; i < lines.length; i++) {
            String line = lines[i];
            if (line.matches(" *minor version: [0-9.]+"))
                minor = i;
            if (line.matches(" *SourceFile: .+"))
                SourceFile = i;
        }
        if (minor == -1)
            throw new Exception("minor version not found");
        if (SourceFile == -1)
            throw new Exception("SourceFile not found");
        if (SourceFile < minor)
            throw new Exception("unexpected order of output");

        System.out.println("output OK");
    }

    String javap(String... args) {
        StringWriter sw = new StringWriter();
        PrintWriter out = new PrintWriter(sw);
        int rc = com.sun.tools.javap.Main.run(args, out);
        out.close();
        System.out.println(sw.toString());
        System.out.println("javap exited, rc=" + rc);
        return sw.toString();
    }
}

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