从jar文件运行类

Question

I added the opencsv jar to my classpath

My code is as follows:

import java.io.File;
import java.io.FileReader;
import java.io.FileOutputStream;

import com.opencsv.CSVReader;
import org.apache.poi.xwpf.usermodel.XWPFDocument;

import java.util.Scanner;

public class CreateDocument
{
    public static void main(String[] args)throws Exception
    {
        CSVReader reader = new CSVReader(new FileReader("invoicedetails.csv"));
        String [] nextLine;
        while ((nextLine = reader.readNext()) != null) {
            // nextLine[] is an array of values from the line
            System.out.println(nextLine[0] + nextLine[1] + nextLine[2]);
        }
    }
}

Now the problem occurs when I try to run the jar from command line, I create the jar by clicking build -> build artifacts I get the following message in my commmand line:

For some extra clarity this is how my solution looks like in IntelliJ:

Answer 1

The jar file only contains the classes that you code in the IDE project. You need to specify in the java command the classpath with all the dependencies.

java -classpath="PATH_TO_OPENCSV"-jar InvoiceBuilder.jar

Answer 2

As others pointed you are missing the dependencies in the created jar. You can create a "fat" jar in Idea. See this blog post . The post is old but should apply to new versions also.