State the difference between strings and arrays.
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What is a file pointer?
What is string english?
In Java list the methods that can be overridden?
When throws keyword is used?
When do we need to use internal iteration? When do we need to use external iteration?
what is difference betwwen hashmap and hashtable ?
What is a short in java?
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Define reflection.
How GC (Garbage Collector) knows the objects reference is unused.Whether GC removes the unused object Parmanently or it maintains something.
What does serializing data mean?
Name few java.lang classes introduced with java 8 ?