Consistent alphabetical sorting of directory content

Issue: SPR-14085

Author: jhoeller

Diff for: spring-core/src/main/java/org/springframework/core/io/support/PathMatchingResourcePatternResolver.java

@@ -26,6 +26,7 @@
 import java.net.URL;
 import java.net.URLClassLoader;
 import java.net.URLConnection;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.Enumeration;
 import java.util.LinkedHashSet;
@@ -750,6 +751,7 @@ protected void doRetrieveMatchingFiles(String fullPattern, File dir, Set<File> r
 			}
 			return;
 		}
+		Arrays.sort(dirContents);
 		for (File content : dirContents) {
 			String currPath = StringUtils.replace(content.getAbsolutePath(), File.separator, "/");
 			if (content.isDirectory() && getPathMatcher().matchStart(fullPattern, currPath + "/")) {