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The application used by this lesson is supplied for you.
Create a file named
Count.java
on your local computer by either copying or downloading theCount.java
source code. The examples in this lesson assume that you place it in the
C:\Test
directory.Now compile and then run the
Count
application to see what it does. You need to specify (as an argument) the path name of a file to be read. You can download and use this sample file named data or any other file you like.
Important: For this lesson, put the data file in a directory other than the directory containing theCount
application. The examples assume that you put the data file in theC:\TestData
directory. Later in this lesson you will see how an application running under a security manager cannot read a file unless it has explicit permission to do so. However, an application can always read a file from the same directory (or a subdirectory); it does not need explicit permission.A sample run is
C:\Test>java Count C:\TestData\data Counted 65 chars.
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Start of Tutorial > Start of Trail > Start of Lesson | Search |