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What is an Iterator?
Some of the collection classes give traversal of their contents via a java.util.Iterator interface. This interface permits you to walk through a collection of objects, operating on every object in turn.
Remember when using Iterators that they have a snapshot of the collection at the time the Iterator was obtained; generally it is not advisable to modify the collection itself whereas traversing an Iterator.
Explain the term- Strings A string is generally considered to be a sequence of characters stored in memory and accessible as a unit. Strings in java are signified as objects
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Debugging mode can be enabled by adding the following line of code before creating new connections: XMPPConnection.DEBUG_ENABLED = true; When debugging mode is enabled, a
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Explain java.util.Random package? The java.util.Random class permits you to create objects which generates pseudo-random numbers along with uniform or gaussian distributions ac
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how would I become expert in collection framework
writing a program to find common friends with the use of array
Is it right that garbage collection guarantee that a program will not run out of memory?
Describe Member Variables vs. Local Variables ? class Car { String licensePlate = ""; // member variable double speed; = 0.0; // member variable double maxSp
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