Reading/Writing to Properties Files inside the jar file

Question

So i am getting back into writing Java after 4 years so please forgive any \"rookie\" mistakes.

I need to have a properties file where i can store some simple data f

Answer 1

Challenge: Read the Property file location in jar file Read the Property file Write the variable as system variables

public static void loadJarCongFile(Class Utilclass )
    {
       try{         
             String path= Utilclass.getResource("").getPath();
             path=path.substring(6,path.length()-1);
             path=path.split("!")[0];
             System.out.println(path);
             JarFile jarFile = new JarFile(path);

               final Enumeration entries = jarFile.entries();
               while (entries.hasMoreElements()) {
                   final JarEntry entry = entries.nextElement();
                   if (entry.getName().contains(".properties")) {
                       System.out.println("Jar File Property File: " + entry.getName());
                       JarEntry fileEntry = jarFile.getJarEntry(entry.getName());
                       InputStream input = jarFile.getInputStream(fileEntry);
                       setSystemvariable(input);      
                       InputStreamReader isr = new InputStreamReader(input); 
                       BufferedReader reader = new BufferedReader(isr);
                       String line;

                       while ((line = reader.readLine()) != null) {
                           System.out.println("Jar file"+line);
                       }
                       reader.close();
                   }
               }
       }
       catch (Exception e)
       {
          System.out.println("Jar file reading Error");
       }
    }
    public static void setSystemvariable(InputStream input)
    {
    Properties tmp1 = new Properties();
       try {
             tmp1.load(input);

       for (Object element : tmp1.keySet()) {
             System.setProperty(element.toString().trim(),
                           tmp1.getProperty(element.toString().trim()).trim());
             }      
       } catch (IOException e) {
             System.out.println("setSystemvariable method failure");
       }
    }