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Difference between HashMap and Hash table
HashMap:
It allow us to have null values and also one null key
It is Unsynchronized.
Iterator in HashMap is Fail-Safe.
Hash Table:
It doesn't allow null value as key and value.
It isn't synchronized.
Java Remote Method Invocation (RMI): It gives a way for a Java program on one machine to interact with objects residing in different JVMs. The important blocks of the RMI arc
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