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Learner Reviews & Feedback for Java Built in Data Structures by Coursera Project Network
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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
By HIMANSHU K G
•Feb 10, 2022
This course is great if you are beginning to learn data structures in java.
By VIJAY K
•May 27, 2022
Voice is not clear, missing basic explanations before change.
By HITESH U
•Mar 31, 2021
Little intimidating to use at first but nice course.