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Learner Reviews & Feedback for Java Built in Data Structures by Coursera Project Network

20 ratings

About the Course

In this project you will read weather data from a file and populate a Java ArrayList with the file data. The data is then uniquified in a Set data structure and stored in a HashMap for accessing data by year. Java's collections framework contains data structures that are built for efficiency. They are used to store and retrieve data in various formats. A list such as an ArrayList can be used in place of an array to contain data where the size cannot be determined ahead of time. A LinkeList is like an ArrayList, except elements can be more quickly added and deleted from it, since no shifting needs to occur. A Hashmap is used to quickly look up a value based on a key rather than a numerical index, for example, to look up a phone number based on a key containing a person's name. A Set may be used to remove duplicates from a list, simply by assigning the data to it. Note: This course works best for learners who are based in the North America region. We’re currently working on providing the same experience in other regions....

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1 - 3 of 3 Reviews for Java Built in Data Structures


Feb 10, 2022

This course is great if you are beginning to learn data structures in java.


May 27, 2022

Voice is not clear, missing basic explanations before change.


Mar 31, 2021

Little intimidating to use at first but nice course.