Join David Gassner for an in-depth discussion in this video Using two-dimensional arrays, part of Java Essential Training.
- Java supports the use of multidimensional arrays…using the same sort of syntax…that you use with simple arrays.…But instead of using a single pair of brackets,…you add brackets as you add dimensions to the array.…In this project, MultiArrays,…I'll declare a String array…and I'll start with a pair of brackets…just like I did before,…but this time, I'll add a second pair of brackets.…This will be a two-dimensional array.…I'll name the array states…and then as I did before,…I'll initialize it with the new keyword and the data type.…
But this time when I select the data type,…IntelliJ IDEA adds two pairs of brackets…to match the original declaration…and I can set the size of both dimensions of the array here.…I'll set the outer array as 3 items…and each item within that array…will have 2 sub items.…And so now I have a two-dimensional array.…Next, I'll set the values.…I'll reference an item in the array,…starting with the array name,…and then once again, two pairs of brackets.…
For the first pair, I'll set the index of the outer item…
Author
David Gassner
Released
7/24/2015- Understanding the history and principles of Java
- Installing Java, IntelliJ IDEA, and BlueJ
- Creating a Java project
- Working with variables, values, and expressions
- Working with object data types
- Building, comparing, and parsing strings
- Debugging and exception handling
- Creating loops and reusable code
- Passing arguments by reference or value
- Using simple and complex arrays
- Creating custom classes
- Understanding inheritance and polymorphism
- Managing files with Java libraries
- Documenting code with Javadoc
- Packaging classes in JAR files
Skill Level Beginner
Duration
Views
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Introduction
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Welcome59s
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Is this course for you?3m 22s
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Using the exercise files5m 5s
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1. What Is Java?
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The history of Java5m 57s
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Java syntax and compilation5m 26s
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2. Installing the Software
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Installing Java on Windows3m 49s
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Installing Java on OS X2m 50s
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Installing BlueJ1m 52s
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3. Getting Started
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Hello World5m 44s
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4. Working with Variables
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Converting numeric values5m 37s
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Using Java operators6m 11s
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5. Working with Objects
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Using the String class5m 5s
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Comparing string values5m 51s
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Parsing string values3m 13s
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Working with dates and times8m 35s
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6. Exception Handling and Debugging
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Debugging with IntelliJ IDEA5m 18s
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Throwing custom exceptions3m 19s
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7. Managing Program Flow
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Using the switch statement4m 51s
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Creating looping code blocks5m 23s
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8. Using Data Collections
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Using simple arrays6m 32s
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Using two-dimensional arrays4m 17s
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9. Creating Custom Classes
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Understanding encapsulation7m 19s
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Using constructor methods4m 56s
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10. Working with Inheritance
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11. Using Common Java Libraries
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12. Preparing a Java Application for Deployment
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Conclusion
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Next steps1m 37s
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Video: Using two-dimensional arrays