Computer Science Canada

I need help with java

Author:  mar5000k [ Thu Sep 13, 2012 10:59 am ]
Post subject:  I need help with java

I am teaching my self Java programming and still doing introduction and orientation.
My problem is, How do I prompt for user input?? The book I am reading says that TextIO.getlnint() is not a built in function. That, it should be writen or created for each program I write, however I have no idea where to start from. Any help please?

Author:  DemonWasp [ Thu Sep 13, 2012 12:00 pm ]
Post subject:  RE:I need help with java

Input is usually by InputStreams (there are several different kinds). The console input stream is known as System.in .

To make your life easier, you usually want to use the Scanner class (available since Java 1.5): Scanner in = new Scanner ( System.in ); . Now, the Scanner instance in will read from standard input.

For example, you might want to ask someone their name:
code:

Scanner in = new Scanner ( System.in );
System.out.println ( "Please enter your name" );
String name = in.nextLine();

Author:  mar5000k [ Thu Sep 13, 2012 3:10 pm ]
Post subject:  RE:I need help with java

Thank you DemonWasp! You gave me some light.

Author:  wtd [ Thu Sep 13, 2012 10:55 pm ]
Post subject:  RE:I need help with java

Not to toot my own horn, but: Introduction to Java.


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