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Declare and use custom classes

Declare and use custom classes - Java教程

课程: Java 8+ Essential Training: Objects and APIs

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Declare and use custom classes

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- [Instructor] I've previously described how to organize code in custom methods. You can further organize your code by moving reusable methods into their own classes. Consider Java's math class. I want to look at the documentation for that class, and to get there, I'll simply type the word math and then with the cursor inside that class name, I'll press shift + F1. If you have your documentation configured for the Java Runtime, you'll get to this webpage. I'll go to the list of methods, and I'll see all these static methods that return various types and take various arguments. Here's how you can create your own classes that are essentially method libraries. I'll get rid of that bit of code that I just created, and then I'll go to my project window. I'll go to my package under the source directory, I'll right click it and choose new, Java class, and I'll create a new class named input helper. Under the kind list, you'll see that you can create classes, interfaces, enums, and other…

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