public void testCopyTextFormatter() throws Exception {
DecimalFormat format = new DecimalFormat( "##0.#####E0" );
format.format( 5.35 );
DecimalFormat cloneOfFormat= (DecimalFormat) new JBossObjectOutputStream( null, null ).smartClone( format );
assertEquals( format.format( 5.35 ), cloneOfFormat.format( 5.35 ) );
}

A similiar test can be constructed for new JButton() which will also fail.