Big Java Late Objects
Big Java Late Objects
2nd Edition
ISBN: 9781119330455
Author: Horstmann
Publisher: WILEY
Question
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Chapter 7, Problem 5RE
Program Plan Intro

Command line arguments:

  • When the user run the program at that time the information is passed to the program is called as command line argument.
  • The passed information is stored as a string array in the main method. After that, the user can use the command line arguments in their program.
  • The information is passed as the “Strings”.
  • There is no restriction on the number of java command line arguments. The user can specify any number of arguments.
  • They are captured into the “String args” of the main method.

Example:

If the user starts a program with the command line as

java ProgramClass –d file1.txt

  • Now the program receives two command line arguments which means “-d” and “file1.txt”.
  • This is totally depending on the program what to do with these strings.
  • It is customary to interpret strings starting with a “hyphen (-)” as program options.

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