Fixed Resource Management in FileUtils

Author: opticod

source-code/app/src/main/java/org/buildmlearn/toolkit/utilities/FileUtils.java

@@ -1,10 +1,8 @@
 package org.buildmlearn.toolkit.utilities;
 
 import android.content.Context;
-
 import android.content.res.AssetManager;
 
-
 import org.w3c.dom.Document;
 
 import java.io.BufferedInputStream;
@@ -68,7 +66,9 @@ public static void unZip(InputStream zipInputStream, String destinationFolder) {
                 f.mkdirs();
             }
 
-            try (ZipInputStream zin = new ZipInputStream(new BufferedInputStream(zipInputStream, BUFFER_SIZE))) {
+            ZipInputStream zin = null;
+            try {
+                zin = new ZipInputStream(new BufferedInputStream(zipInputStream, BUFFER_SIZE));
                 ZipEntry ze;
                 while ((ze = zin.getNextEntry()) != null) {
                     String path = destinationFolder + ze.getName();
@@ -99,6 +99,10 @@ public static void unZip(InputStream zipInputStream, String destinationFolder) {
                         }
                     }
                 }
+            } finally {
+                if (zin != null) {
+                    zin.close();
+                }
             }
         } catch (Exception e) {
             e.printStackTrace();