From e49a1d294c71b8ac970aac014db1afa3b1fd4874 Mon Sep 17 00:00:00 2001
From: jie zheng <jiezheng5@gmail.com>
Date: Sun, 7 Nov 2021 00:43:02 -0700
Subject: [PATCH] fixing stylecheck error by adding space before and after +/-

---
 .../java/org/jabref/model/entry/identifier/DOI.java    | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/main/java/org/jabref/model/entry/identifier/DOI.java b/src/main/java/org/jabref/model/entry/identifier/DOI.java
index e23c3679a11..8a2acd5fe08 100644
--- a/src/main/java/org/jabref/model/entry/identifier/DOI.java
+++ b/src/main/java/org/jabref/model/entry/identifier/DOI.java
@@ -106,9 +106,9 @@ public DOI(String doi) {
         // Remove whitespace
         String trimmedDoi = doi.trim();
 
-        //jie add-------------------------
+        // jie add-------------------------
         trimmedDoi = removeScharDOI(trimmedDoi);
-        //jie add done--------------------
+        // jie add done--------------------
 
         // HTTP URL decoding
         if (doi.matches(HTTP_EXP) || doi.matches(SHORT_DOI_HTTP_EXP)) {
@@ -152,9 +152,9 @@ public DOI(String doi) {
      * @return an DOI string with the special character at the end removed
      */
     public static String removeScharDOI(String doiStr) {
-        //jie add
+        // jie add
         char[] lcharDoi = doiStr.toCharArray();
-        int i = lcharDoi.length-1;
+        int i = lcharDoi.length - 1;
         // valid DOI characters are a-z(97-122), A-Z(65-90), 0-9(48-57), -(45), .(46), _(95), ;(59), ( (40), ) (41), /(47)
         for (; i >= 0; i--) {
             if ((lcharDoi[i] >= 45 && lcharDoi[i] <= 47) ||
@@ -183,7 +183,7 @@ public static String removeScharDOI(String doiStr) {
 //                break;
 //            }
 //        }
-        return doiStr.substring(0, i+1);
+        return doiStr.substring(0, i + 1);
     }
 
     /**