Use Ant for running program with command line arguments

Use Ant for running program with command line arguments

Apache Ant is a build automation tool primarily used for building and deploying projects. While it's not designed for running programs with command-line arguments directly, you can use Ant to define custom targets in your build.xml file that execute Java programs with specific command-line arguments.

Here's how you can create an Ant build.xml file to run a Java program with command-line arguments:

  1. Create a build.xml file in your project directory or the directory where your Java program is located.

  2. Define an Ant target to run your Java program with command-line arguments. For example:

<project name="MyJavaProgram" default="run"> <property name="src.dir" value="src" /> <property name="bin.dir" value="bin" /> <property name="main.class" value="com.example.MyMainClass" /> <property name="java.args" value="arg1 arg2 arg3" /> <path id="classpath"> <fileset dir="${bin.dir}" includes="**/*.class" /> </path> <target name="compile"> <mkdir dir="${bin.dir}" /> <javac srcdir="${src.dir}" destdir="${bin.dir}" includeantruntime="false" /> </target> <target name="run" depends="compile"> <java classname="${main.class}" classpathref="classpath"> <arg line="${java.args}" /> </java> </target> </project>

In the above example:

  • Replace com.example.MyMainClass with the fully qualified name of your Java class that contains the main method.
  • Modify the java.args property to specify the command-line arguments you want to pass to your program.

  1. Open a terminal or command prompt and navigate to the directory containing the build.xml file.

  2. Run the Ant target to execute your Java program:

ant run

This will compile your Java code (if not already compiled) and then run your Java program with the specified command-line arguments.

Make sure you have Ant installed and added to your system's PATH environment variable for this to work. You can download Ant from the Apache Ant website (https://ant.apache.org/).

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