Sort map by value using java 8 features

 

Image for post

Generally, we sort the values by using keys. In case of map in java, we have a habit to sort keys, not values. But, there can be some scenarios , where we need to sort data based on values in map.

I faced this challenge while working on one of my projects, where i need to do sorting based on values in hashmap. Then, i try to search easy way to achieve that, and found the api in java to do this job.

I am excited to share with everyone , feature of java8 which makes my life easy, infact my coding life easy.

I will show you both the code, before using java 8 features, and along with java 8 features. You will see the difference.

Before java 8, code was like:

Image for post
sort unsortedFruits map with comparator

Using java 8 features :

Image for post
sorting using java 8 features

Code is clean and one liner to sort the map by values, not keys.

You can download and run the complete code by downloading from my github link 

https://github.com/kavitagupta972/MyWork/blob/master/Sorting%20Map.zip

Hope you find this article helpful. For more java 8 features, stay tuned….

Comments

Post a Comment

Popular posts from this blog

Difference between npm and npx

Image
Hi All, Since, we are working on frontend technologies, we might get this question early or later stage of our working experience. What is the difference between npm and npx. Before getting into the difference, let's discuss  what is npm and npx. NPM stands for Node Package Manager , which is used to install packages from node repository into your local machine. Since, in above example, I just installed json-server package. I want to execute this package in my local system.  For that purpose, I need to execute one more command as below : NPX stands for Node Package Execute , which is used to execute package from node repository into your local machine. Now, let's see the difference or in other words, let's discuss about when can we use npm and when can we use npx. Scenario is, when you just want to execute the package, and not required to install in your local system. You can use npx command, it will execute your package directly by looking into node repository over ...
Read more

Why Axios for API integration

Image
  When i started using react, i was wondering, how to connect to Rest API from UI. I started searching library which can be used to fulfill this purpose. Then, i turn towards fetch api and axios api. I started studying about both the libraries before actually using it. Then, i decided to use the axios library, and try to compare both the libraries. Below are the some features, which makes axios more powerful : Making simultaneous requests using axios.all 2. Sending custom headers 3. Automatically transforming requests and responses in json data 4. Cancelling request 5. Axios I s  More Secure, Featuring Built In Cross Site Forgery (XSRF) Protection 6. Monitor POST Request Progress 7. Axios Has A Wider Range Of Supported Browsers 8.Better error handling Browsers Support : Stay tuned for more updates !!!! Happy reading :)
Read more