Fix some warnings

[fanfix.git] / src / be / nikiroo / utils / IOUtils.java

diff --git a/src/be/nikiroo/utils/IOUtils.java b/src/be/nikiroo/utils/IOUtils.java
index bf0686babca9e7addfbbd810a7a8e4d5fd66756d..d83311449c3bb5016ae35b396284f56822786ee0 100644 (file)
--- a/src/be/nikiroo/utils/IOUtils.java
+++ b/src/be/nikiroo/utils/IOUtils.java
@@ -89,8 +89,12 @@ public class IOUtils {
                                }
                                zip.putNextEntry(new ZipEntry(base + "/"));
                        }
-                       for (File file : target.listFiles()) {
-                               zip(zip, base, file, false);
+
+                       File[] files = target.listFiles();
+                       if (files != null) {
+                               for (File file : files) {
+                                       zip(zip, base, file, false);
+                               }
                        }
                } else {
                        if (base == null || base.isEmpty()) {
@@ -234,13 +238,13 @@ public class IOUtils {
                        throws IOException {
                List<File> list = deltree(target, null);
                if (exception && !list.isEmpty()) {
-                       String slist = "";
+                       StringBuilder slist = new StringBuilder();
                        for (File file : list) {
-                               slist += "\n" + file.getPath();
+                               slist.append("\n").append(file.getPath());
                        }
 
                        throw new IOException("Cannot delete all the files from: <" //
-                                       + target + ">:" + slist);
+                                       + target + ">:" + slist.toString());
                }
 
                return list.isEmpty();