Java Built in Data Structures

Offered By
Coursera Project Network
In this Guided Project, you will:

Create and Populate a Java LinkedList with the data and compare its performance with ArrayList.

Use a Set data structure to uniquify the data.

Create a HashMap of the data and look up a record based on a unique key.

Clock2 hours
IntermediateIntermediate
CloudNo download needed
VideoSplit-screen video
Comment DotsEnglish
LaptopDesktop only

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.

Skills you will develop

Java Object-Oriented ProgrammingJava Collections FrameworkJava LinkedListJava Data StructuresJava HashMap

Learn step-by-step

In a video that plays in a split-screen with your work area, your instructor will walk you through these steps:

  1. Analyze the existing application and create a Java ArrayList to populate with data from a file.

  2. Create and Populate a Java LinkedList with the data and compare its performance with ArrayList.

  3. Use a Set data structure to uniquify the data from the LinkedList.

  4. Sort the Set data according to rain and store it in a file.

  5. Create a HashMap of the data and look up a record based on a unique key.

How Guided Projects work

Your workspace is a cloud desktop right in your browser, no download required

In a split-screen video, your instructor guides you step-by-step

Frequently asked questions

Frequently Asked Questions

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