This isn’t a trick question. For a long time you couldn’t delete a property from java.util.Properties class. In the recent versions too Java doesn’t reveal that it has added the functionality. However as java.util.Properties now extends Hashtable, you can delete a property by: Properties.remove(key); So effectively Properties is a persistent Hashtable which is limited to String key [...]
This isn’t a trick question. For a long time you couldn’t delete a property from java.util.Properties class. In the recent versions too Java doesn’t reveal that it has added the functionality. However as java.util.Properties now extends Hashtable, you can delete a property by:
Properties.remove(key); So effectively Properties is a persistent Hashtable which is limited to String key [...]
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