/*
* Copyright (c) 2004, 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.
*
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*/
/**
* @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()));
}
}