February 2014
Beginner
1248 pages
62h 25m
English
Content preview from Java™ How To Program (Early Objects), Tenth Edition
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2.5.6 Obtaining an int as Input from the User
Line 18
number1 = input.nextInt(); // read first number from user
uses Scanner object input’s nextInt method to obtain an integer from the user at the keyboard. At this point the program waits for the user to type the number and press the Enter key to submit the number to the program.
Our program assumes that the user enters a valid integer value. If not, a runtime logic error will occur and the program will terminate. Chapter 11, Exception Handling: A Deeper Look, discusses how to make your programs more robust by enabling them to handle such errors. This is also known as making your program fault tolerant.
In line 18, we place the result of the call to method nextInt ...
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