October 2011
Beginner
432 pages
10h 18m
English
Content preview from Sams Teach Yourself Java™ in 24 Hours, Sixth EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Creating an Application
The Saluton program you wrote during Hour 2, “Writing Your First Program,” is an example of a Java application. The next application you create calculates the square root of a number and displays the value.
With the Java24 project open in NetBeans, begin a new application:
1. Choose File, New File. The New File Wizard opens.
2. Choose the category Java and the file type Empty Java File, and then click Next.
3. Enter the class name Root and click Finish.
NetBeans creates Root.java and opens the empty file in the source editor so you can begin working on it. Enter everything from Listing 4.1, remembering not to enter the line numbers and colons along the left side of the listing. The numbers are used to make parts of programs ...
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