Run Java Program From Command Line With Arguments

Java is one of the most commonly used programming languages. It is also an IDE-intensive programming language, with tight integration with Eclipse. If you are just starting out learning Java, here is a basic guide to help you start running the Java application from the command prompt (in Windows. A Java application can accept any number of arguments from the command line. This allows the user to specify configuration information when the application is launched. The user enters command-line arguments when invoking the application and specifies them after the name of the class to be run.

Command-line arguments can be a way of specifying configuration properties for an application, and Java is no different. Instead of clicking on an application icon from the operating system, you can run the Java application from a terminal window. Further Example of a Java programs using Command Line Arguments: TempConversion.java Yet another example is the TempConversionCL class, developed in the TempConversion Eclipse project. This program requires only one command line argument, but this value must be converted from a String to a double value to be used arithmetically.

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The java command-line argument is an argument i.e. passed at the time of running the java program.

The arguments passed from the console can be received in the java program and it can be used as an input.

So, it provides a convenient way to check the behavior of the program for the different values. You can pass N (1,2,3 and so on) numbers of arguments from the command prompt.

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Simple example of command-line argument in java

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In this example, we are receiving only one argument and printing it. To run this java program, you must pass at least one argument from the command prompt.

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Example of command-line argument that prints all the values

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Run Java Program From Command Line

In this example, we are printing all the arguments passed from the command-line. For this purpose, we have traversed the array using for loop.

Java Command Line Arguments Example

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Java Command Line Arguments Memory