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* version 2 for more details (a copy is included in the LICENSE file that
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/**
* @test
* @bug 7198904
* @summary Verify that cloned TreeMap gets new keyset
* @author david.buck@oracle.com
* @run main/othervm Clone
* @run main/othervm -XX:+AggressiveOpts 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 );
}
}
}
}