Why put method is idempotent?
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Explain about oops concepts.
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What is a Wrapper class?
What is the use of volatile in java?
How to instantiate static nested classes in java?
What is the range of a character variable?
Why to give the file name same as the public class name in java?
what is main difference b/w abstract class and interface
How thread scheduler schedule the task?
What is an array in java?
perpare on factorypattern,linklist wothout using collection, (multitharding ie create producer/customer therad producer create Queue continuesly,consumer consume queue, consumer wait if queue is full,producer wait if queue is empty),diff betn sleep(1000)&wait(1000) these r the main Q ask in huawei(2008)
What do you meant by active and passive objects?
Write down program for following scenario. Use java coding standard. You have array list with some words in it..we will call it as dictionary….and you have a arbitrary string containing some chars in it. You have to go through each word of dictionary and find out if that word can be constructed with the help of chars from arbitrary string given. If you find the word print it else print none.