Join David Gassner for an in-depth discussion in this video Using the switch statement, part of Java Essential Training.
- The if and else keywords give you…complete flexibility in writing conditional code.…But you can sometimes write conditional code…more efficiently using the switch statement.…A switch statement examines a single value…and then compares it to multiple possibilities,…and you can control the flow of execution…based on when the two values match.…I have code in place to collect a value from the user.…I then parse that value as a primitive int.…I'll run the code for the first time…and show that in the run window…I can click here, type in a number,…and then the application finishes,…but nothing else happens.…
My goal is to examine that value.…I'll place the cursor after the existing code…and I'll add the switch keyword.…IntellJ IDEA adds parentheses.…Place the value you want to examine within the parentheses.…I'll place the value monthNumber.…Then add a pair of braces, that's the switch code block.…Now within the switch code block,…you can have one or more cases.…Each starts with the word case and then…a value that you want to match followed by a colon.…
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 the switch statement