/*

 * Copyright 2004 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/**

 * @test

 * @bug 5030064

 * @summary Basic tests for close().

 */

import java.io.Closeable;

import java.util.Formatter;

import java.util.FormatterClosedException;

public class Close {

    private static class ExpectedException extends RuntimeException {}

    private static class C implements Appendable, Closeable {

        public Appendable append(CharSequence csq) { return null; }

        public Appendable append(char c) { return null; }

        public Appendable append(CharSequence csq, int s, int e) {

            return null;

        }

        public void close() {

            throw new ExpectedException();

        }

    }

    private static class NC implements Appendable {

        public Appendable append(CharSequence csq) { return null; }

        public Appendable append(char c) { return null; }

        public Appendable append(CharSequence csq, int s, int e) {

            return null;

        }

        // method coincidentally called close()

        public void close() {

            throw new RuntimeException("NC.close should not be called");

        }

    }

    private static void test(Formatter f) {

        if (f.out() instanceof C) {

            // C.close() called since C implements Closeable

            try {

                f.close();

                throw new RuntimeException("C.close not called");

            } catch (ExpectedException x) {

                System.out.println("  C.close called");

            }

        } else {

            // NC.close() not called since NC does not implement Closeable

            f.close();

        }

        // Formatter is a Closeable

        if (!(f instanceof Closeable))

            throw new RuntimeException("Formatter is not a Closeable");

        // multiple close() does not throw a FormatterClosedException

        f.close();

        try {

            f.close();

            System.out.println("  FormatterClosedException not thrown");

        } catch (FormatterClosedException x) {

            throw new RuntimeException("FormatterClosedException thrown");

        }

    }

    public static void main(String [] args) {

        System.out.println("testing Closeable");

        test(new Formatter(new C()));

        System.out.println("testing non-Closeable");

        test(new Formatter(new NC()));

    }

}