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*
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* 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
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*
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/**
* @ test
* @ bug 7198904
* @ summary Verify that cloned TreeMap gets new keyset
* @ author david . buck @ oracle . com
* @ run main / othervm Clone
*/
import java.util.TreeMap;
public class Clone {
public static void main(String[] args) throws Exception {
TreeMap<String,Object> m1 = new TreeMap<String,Object>();
m1.put( "one" , 1 );
m1.keySet();
TreeMap<String,Object> m2 = (TreeMap<String,Object>)m1.clone();
m1.put( "two" , 2 );
m2.put( "three" , 3 );
// iterate over the clone (m2) and we should get "one" and "three"
for ( final String key : m2.keySet() ) {
if ( !"one" .equals( key ) && !"three" .equals( key ) ) {
throw new IllegalStateException( "Unexpected key: " + key );
}
}
// iterate over the original (m1) and we should get "one" and "two"
for ( final String key : m1.keySet() ) {
if ( !"one" .equals( key ) && !"two" .equals( key ) ) {
throw new IllegalStateException( "Unexpected key: " + key );
}
}
}
}
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