Answer / manja

LinkedHashSet, TreeSet and HashSet are three of most popular implementation of Set interface in Java Collection Framework. Since they implement Set interface, they follow it's contract for not allowing duplicates. All these implementation except, TreeSet uses equals() method to check for duplicates, on the other hand TreeSet use compareTo() or compare() method for comparing objects and can break Set interface contract of unique element, if equals method is not consistent with compareTo() or compare() method. In this Java Collection tutorial, we will see difference between LinkedHashSet vs TreeSet vs HashSet on different points e.g. speed, performance, ordering, synchronization etc. Based upon these differences we can also decide when to use LinkedHashSet vs TreeSet vs HashSet in Java. TL;DR, Use HashSet for all general purpose usage i.e. where you need to store only unique elements without any ordering requirement. If you need to maintain order on which elements are added into Set then use LinkedHashSet, it provides ordering with little impact on performance. Use TreeSet when you absolutely nee to keep elements in specific sorted order e.g. keeping employee in increasing order of their age or salary. Remember, TreeSet is significantly slower than LinkedHashSet and HashSet because of this sorting overhead.

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Am chittibabu from vadavalli, My father name is nanjan.he is working in state bank of india at vadavalli, My mother name is ramal. She is house wife. My brother name is rajaram he is working in Privete Company. I was born on 25-january-1984 at bhavanisager in Erode District. I have completed my school in government higher secondary school bhavanisager. After that I came to coimbatore for higher study.i have joined Bsc computer science in sri ramalinga sowdambigai college of science and commerce, affiliated by bharathiyar university, coimbatore. In the same college, I have continued UG degree also. but I got a job in Systech infovation as a software programmer,so I discontinued Msc Degree.I have one and half years experience from this concern. Here I have completed two products; one is Tranport management solution for balaji goods carriers at tirupur. Another one is Embroidery Management Solution for Angel Embroidery at tirupur. After that I got an another job in metis technologies as senior software engineer. I have one year experience from this company.here I working in school management product.it is developing version by version.

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