What is data structure in java?


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More Core Java Interview Questions

What is a class instance variable?

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I Have a class abstract with one abstract method, so that method should override in the subclass, but i dont want to override, if i am not override what will happen? If compilation will occur then i dont want to give compilation error, then what we need to do??? See the sample program. public abstract class AbstractExample { public abstract void sampleMethod(); } public class AbstractExampleImple extends AbstractExample { }

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Difference between Reader/Writer and InputStream/Output Stream?

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What do you mean by compiler?

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If an object is garbage collected, can it become reachable again?

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What is nextline method in java?

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Is empty list java?

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What is difference between call by value and call by reference?

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