Fix log folder not created correctly

pom.xml

@@ -1,13 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project
         xmlns="http://maven.apache.org/POM/4.0.0"
-        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>life.qbic</groupId>
     <artifactId>postman-cli</artifactId>
     <version>1.3.0</version>
     <name>Postman cli</name>
-    <url>http://github.com/qbicsoftware/postman-cli</url>
+    <url>https://github.com/qbicsoftware/postman-cli</url>
     <description>A client software written in Java for dataset downloads from QBiC's data management system openBIS </description>
     <packaging>jar</packaging>
 

src/main/java/life/qbic/App.java

@@ -1,25 +1,26 @@
 package life.qbic;
 
-import java.io.File;
-import java.io.IOException;
-import java.util.Optional;
 import life.qbic.io.commandline.OpenBISPasswordParser;
 import life.qbic.io.commandline.PostmanCommandLineOptions;
+import life.qbic.model.Configuration;
 import life.qbic.model.download.Authentication;
 import life.qbic.model.download.AuthenticationException;
 import life.qbic.model.download.ConnectionException;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import picocli.CommandLine;
 
+import java.io.File;
+import java.util.Optional;
+
 /**
  * postman for staging data from openBIS
  */
 public class App {
 
   private static final Logger LOG = LogManager.getLogger(App.class);
 
-  public static void main(String[] args) throws IOException {
+  public static void main(String[] args) {
 
     CommandLine cmd = new CommandLine(new PostmanCommandLineOptions());
     int exitCode = cmd.execute(args);
@@ -67,7 +68,15 @@ public static Authentication loginToOpenBIS(
     }
 
     // Ensure 'logs' folder is created
-    new File(System.getProperty("user.dir") + File.separator + "logs").mkdirs();
+    File logFolder = new File(Configuration.LOG_PATH.toAbsolutePath().toString());
+    if (!logFolder.exists()) {
+      boolean logFolderCreated = logFolder.mkdirs();
+      if (!logFolderCreated) {
+        LOG.error("Could not create log folder '" + logFolder.getAbsolutePath() + "'");
+        System.exit(1);
+      }
+    }
+
     Authentication authentication =
             new Authentication(
                     user,

src/main/java/life/qbic/io/parser/IdentifierParser.java

@@ -12,7 +12,7 @@ public class IdentifierParser {
    * Retrieve the identifiers from provided file
    *
    * @return Identifiers for which datasets will be retrieved
-   * @throws IOException
+   * @throws IOException if the file could not be read successfully
    */
   public static List<String> readProvidedIdentifiers(File file) throws IOException {
     List<String> identifiers = new ArrayList<>();

src/main/java/life/qbic/model/Configuration.java

@@ -8,6 +8,6 @@
  */
 public class Configuration {
 
-    public static long MAX_DOWNLOAD_ATTEMPTS = 3;
-    public static Path LOG_PATH = Paths.get(System.getProperty("user.dir"),"logs");
+    public static final long MAX_DOWNLOAD_ATTEMPTS = 3;
+    public static final Path LOG_PATH = Paths.get(System.getProperty("user.dir"),"logs");
 }

src/main/java/life/qbic/model/download/Authentication.java

@@ -30,7 +30,7 @@ public Authentication(
     /**
      * Login method for openBIS authentication
      *
-     * returns 0 if successful, 1 else
+     * @throws AuthenticationException in case the authentication failed
      */
     public void login() throws ConnectionException, AuthenticationException {
         try {

src/main/java/life/qbic/model/download/QbicDataDisplay.java

@@ -6,27 +6,24 @@
 import ch.ethz.sis.openbis.generic.dssapi.v3.IDataStoreServerApi;
 import ch.ethz.sis.openbis.generic.dssapi.v3.dto.datasetfile.DataSetFile;
 import ch.systemsx.cisd.common.spring.HttpInvokerUtils;
+import life.qbic.model.files.FileSize;
+import life.qbic.model.files.FileSizeFormatter;
+
 import java.time.ZoneOffset;
 import java.time.format.DateTimeFormatter;
 import java.time.format.DateTimeFormatterBuilder;
-import java.util.Comparator;
-import java.util.Date;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
+import java.util.*;
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
-import life.qbic.model.files.FileSize;
-import life.qbic.model.files.FileSizeFormatter;
 
 /**
  * Lists information about requested datasets and their files
  */
 public class QbicDataDisplay {
 
-    String sessionToken;
+    final String sessionToken;
 
-    DateTimeFormatter utcDateTimeFormatterIso8601 = new DateTimeFormatterBuilder()
+    private final static DateTimeFormatter utcDateTimeFormatterIso8601 = new DateTimeFormatterBuilder()
         .appendPattern("yyyy-MM-dd'T'hh:mm:ss")
         .appendZoneId()
         .toFormatter()
@@ -38,7 +35,7 @@ public class QbicDataDisplay {
      * Constructor for a QbicDataDisplay instance
      *
      * @param AppServerUri The openBIS application server URL (AS)
-     * @param DataServerUri The openBIS datastore server URL (DSS)
+     * @param dataServerUris The openBIS datastore server URLs (DSS)
      * @param sessionToken The session token for the datastore & application servers
      */
     public QbicDataDisplay(