Java Arrays and Loops

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In this Guided Project, you will:

Use a while loop to scan the data file and save the number of entries in the file.

Create the Array of Objects containing weather data.

Sort the weather data and store it in a file.

2 hours
Intermediate
No download needed
Split-screen video
English
Desktop only

In this project you will read weather data from a file and populate an Array with the file data. The data is then sorted in an Array, and output to another file. Loops are used in a Java program whenever a sequence of code must be repeated. A common use for a while loop is to read data from a file, where the file is of unknown length. A for loop, on the other hand is often used when the repeat count of a code sequence is known. A common use of a for loop is to iterate through an array. An Array is a list of items of a fixed size where each entry is the same type of data. The array could contain numbers, Strings of characters, or a user-defined data type. 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 Exception Handling

  • Java For Loops

  • Java Arrays

  • Java File Processing

  • Java While Loops

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 data and create a Java Class to handle the data.

  2. Create and Populate a Java Array with sample data.

  3. Use a while loop to scan the data file and save the number of entries in the file.

  4. Create the Array of Objects containing weather data.

  5. Sort the weather data and store it in a file.

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

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At the top of the page, you can press on the experience level for this Guided Project to view any knowledge prerequisites. For every level of Guided Project, your instructor will walk you through step-by-step.

Yes, everything you need to complete your Guided Project will be available in a cloud desktop that is available in your browser.

You'll learn by doing through completing tasks in a split-screen environment directly in your browser. On the left side of the screen, you'll complete the task in your workspace. On the right side of the screen, you'll watch an instructor walk you through the project, step-by-step.