/*
* Copyright ( c ) 2001 , 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 4486049
* @ summary min and max methods fail if size changes in between a call to size
* and an attempt to iterate .
* @ author Josh Bloch
*/
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.Set;
public class MinMax {
public static void main(String[] args) {
Set s = new LyingSet();
s.add("x" );
if (!Collections.min(s).equals("x" ))
throw new RuntimeException("1: " + Collections.min(s));
if (!Collections.max(s).equals("x" ))
throw new RuntimeException("2: " + Collections.max(s));
s.add("y" );
if (!Collections.min(s).equals("x" ))
throw new RuntimeException("3: " + Collections.min(s));
if (!Collections.max(s).equals("y" ))
throw new RuntimeException("4: " + Collections.max(s));
s.add("w" );
if (!Collections.min(s).equals("w" ))
throw new RuntimeException("5: " + Collections.min(s));
if (!Collections.max(s).equals("y" ))
throw new RuntimeException("6: " + Collections.max(s));
s.clear();
s.add("x" );
if (!Collections.min(s, Collections.reverseOrder()).equals("x" ))
throw new RuntimeException("1a: " + Collections.min(s));
if (!Collections.max(s, Collections.reverseOrder()).equals("x" ))
throw new RuntimeException("2a: " + Collections.max(s));
s.add("y" );
if (!Collections.min(s, Collections.reverseOrder()).equals("y" ))
throw new RuntimeException("3a: " + Collections.min(s));
if (!Collections.max(s, Collections.reverseOrder()).equals("x" ))
throw new RuntimeException("4a: " + Collections.max(s));
s.add("w" );
if (!Collections.min(s, Collections.reverseOrder()).equals("y" ))
throw new RuntimeException("5a: " + Collections.min(s));
if (!Collections.max(s, Collections.reverseOrder()).equals("w" ))
throw new RuntimeException("6a: " + Collections.max(s));
}
}
class LyingSet extends LinkedHashSet {
public int size() {
return super .size() + 1 ; // Lies, lies, all lies!
}
}
Messung V0.5 in Prozent C=97 H=100 G=98
¤ Dauer der Verarbeitung: 0.16 Sekunden
(vorverarbeitet am 2026-10-11)
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