How can I read a file from the classpath?

• 0
  Greetings to the reader!
  I need help getting the file from the classpath.
  The file is specified in the -cp option when running jar through the console.
  
  Run jar using:
  

  java -cp myjar.jar:dir1/dir2/myfile.txt com.company.Main

  
  
  At the output I get:
  

  Exception in thread "main" java.lang.NullPointerException
  	at com.company.Main.main(Main.java:11)

  
  
  Source Code
  

  package com.company;
  
  import java.io.InputStream;
  
  public class Main {
  
      public static void main(String[] args) {
          ClassLoader classLoader = Main.class.getClassLoader();
          InputStream resource = classLoader.getResourceAsStream("dir1/dir2/myfile.txt");         
          System.out.println(resource.toString());
      }
  }

  
  
  Project tree:
  

  -- сom
  ---- company
  ------ Main.java

  
  
  How do I get that file from -cp?

  Java Fynn Blackwell, Jun 19, 2020

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1 Answers
• 0
  It was like that,
  
  That the classpath only works with .jar and directories, so specifying a file in the -cp argument is wrong.
  
  
  
  Solution
  
  java -cp myjar.jar :. com.company.Main

  Anonymous

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