How do I compile a Java file that depends on external JAR files using the command prompt?

Including JAR Files in Java Compilation Using Command Prompt

To compile a Java file that relies on external JAR files, you must include those JARs during compilation. Utilizing the command prompt, this can be achieved through the following methods:

Using the "-cp" Option:

Include JAR files using the "-cp" or "-classpath" option in the "javac" command. For instance:

javac -cp ".:/home/path/mail.jar:/home/path/servlet.jar;" MyJavaFile.java

Setting the "CLASSPATH" Environment Variable:

Instead of specifying JARs each time, you can set the "CLASSPATH" environment variable to include their paths. This will automatically use these JARs during compilation without the need to explicitly mention them.

Windows:

set CLASSPATH=.;/home/path/mail.jar;/home/path/servlet.jar;

Linux:

export CLASSPATH=".:/home/path/mail.jar:/home/path/servlet.jar:"

Referencing a Blog for Further Details:

For additional information on setting the classpath environment variable on various operating systems, refer to the blog at:

http://javarevisited.blogspot.com/2011/01/how-classpath-work-in-java.html

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