Difference between HashMap and TreeMap

Difference between HashMap and TreeMap

Data storage is an important aspect of a system. It surely plays a vital role in the tunnel of technology. In this world, we have so many things to talk about. But in protocols and formats, hash map and tree map plays a vital role but we are unaware of their functions and notions. Let’s discuss difference between HashMap and TreeMap!

What is HashMap

Hash Map is a structuring form where data is assigned a new identification along with a new number, digit or may be symbol. In simple words, this map is mainly known as data organization method. It majorly functions to organize the data. It is in a form of a table in which cells are called the boxes or entries in which data is supposed to be stored.

What is TreeMap

Tree map is a method for data visualization is getting popular daily. It is actually an organized view of information in a sequence of dissimilar rectangular dimensions, collectively which sums up to display a whole element. Each box’s size describes a delivered quantity and the color a delivered value. Each stage of the flow of Treemap is lead display of the dataset that has been inputted into the data table. A rectangle is a description of a category in the flow. Dissimilar algorithms can be victimized to develop the one, last TreeMap that is intended. TreeMap assists designers in displaying unlike data on the similar screen.

HashMap vs TreeMap

Which one is faster? HashMap or TreeMap: When it comes to the first category, there is no such a big difference underlie except one is faster and other is slower. HashMap is faster and other one is slow in speed. The main difference between the two is that tree map will list the large data bases in order (calling and keyset ().iterator ()), that is mainly used to make the keys in order afterwards. It means there is a need of comparator so that it can make a TreeMap. Whereas in HashMap, if data bases are asked to be in chronological order, it will be having the hidden entries or keys will be different too.

What kind of map both gives to you?: When it comes to the HashMap, it gives you a sorted map that sorted map allows to see the structure and review the contents. The review of the contents is only due to iterations. You can also check the cells by using comparator that was being used in treemap process. In this process, null values are allowed in map and it is considered a valid entry.

On the other hand, when it comes to the usage of treemap. It doesn’t allow you us to use the null values in the entries. It avoids using null values. In short, we can sum up that in first case, tree map allows to use the differing or contrasting keys to use. Whereas in the second case, it only uses up the similar keys.

Conclusion!: While concluding the whole discussion, it will be good to summarize the whole content on the basis of what we have read so far. Data insertion is bit faster in HashMap as it works well in large databases. When it comes to the order purpose, HashMap is not good, because treemap is designed for the order stuff. HashMap is goo where data is no so hard or difficult to use. HashMap consider null keys to be added in the database but treemap is not willing to do such favors. At the end, when it comes to the selection of the keys, HashMap is with the usage of contrasting keys while the other one is using the similar one.