The Java Tutorials have been written for JDK 8. Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available.
See Java Language Changes for a summary of updated language features in Java SE 9 and subsequent releases.
See JDK Release Notes for information about new features, enhancements, and removed or deprecated options for all JDK releases.
This lesson uses a simple application that we provide to you.
Count.java
on your local computer by either copying or downloading the
Count.java
source code. The examples in this lesson assume that you place count
in the C:\Test
directory.count
application needs to access a text file containing the data it will process. Download a
sample data file
, or use any other convenient text file as data.count
class file. We suggest C:\TestData\data
.Count
application to see what it does.count
application, you need to specify (as an argument) the path name of a file to be read.java Count C:\TestData\data
Here is a sample run:
C:\Test>java Count C:\TestData\data Counted 65 chars.