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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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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