[Title] Fix empty string error

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Change-Id: I0287c712ee9d379ec77e0c5152048f32d49e51ce

diff --git a/org.tizen.common/src/org/tizen/common/util/FileUtil.java b/org.tizen.common/src/org/tizen/common/util/FileUtil.java
index 7179099..b3a0b35 100755 (executable)
--- a/org.tizen.common/src/org/tizen/common/util/FileUtil.java
+++ b/org.tizen.common/src/org/tizen/common/util/FileUtil.java
@@ -634,6 +634,10 @@ public class FileUtil {
     }
     
     private static String trimLastPath(String originalPath) {
+        if(StringUtil.isEmpty(originalPath)) {
+            return StringUtil.EMPTY_STRING;
+        }
+        
         char lastChar = originalPath.charAt(originalPath.length() - 1);
         if(lastChar == File.separatorChar) {
             return originalPath.substring(0, originalPath.length() - 1);
@@ -642,6 +646,10 @@ public class FileUtil {
     }
     
     private static String trimFirstPath(String originalPath) {
+        if(StringUtil.isEmpty(originalPath)) {
+            return StringUtil.EMPTY_STRING;
+        }
+        
         char firstChar = originalPath.charAt(0);
         if(firstChar != File.separatorChar) {
             return ("" + File.separatorChar).concat(originalPath);