CODEWITHSUNDEEP
javajar
John Eipe
John Eipe

Reputation: 11236

correct way of creating a executable jar

I have the following directory structure.

src|
   |pack|
        |Test.java
data|
    |data.txt

classes|
       |pack|
            |Test.class
manifest.txt

It compiled and ran fine.

\project>javac -d classes src\pack\Test.java
\project>java -cp classes pack.Test

Contents of Test.java

package pack;
import java.io.*;

class Test {
    public static void main(String[] args) {
        String line = null;
        BufferedReader br = null;
        try {
            br = new BufferedReader(new FileReader("data\\data.txt"));
            while((line=br.readLine())!=null) {
                System.out.println(line);
            }
            br.close();
        }catch(IOException e){System.out.println("FileNotFound");}
    }
}

Contents of manifest.txt

Main-Class: pack.Test

How to create the jar file? and from where should I execute it?

Upvotes: 0

Views: 102

Answers (1)

Dan D.
Dan D.

Reputation: 32391

If you want to manually create a jar then take a look at the jar command. Something like this, in your case:

jar -cvfm name.jar manifest.txt -C classes .

However, please note that the name of the manifest file should be MANIFEST.MF.

Also, I suggest you start learning a build tool like ant or maven or gradle such as you can do this automatically.

Upvotes: 1

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