use try with resource

pmd-core/src/test/java/net/sourceforge/pmd/cpd/FileReporterTest.java

@@ -54,9 +54,7 @@ public class FileReporterTest {
     }
 
     private String readFile(File file) throws IOException {
-        BufferedReader reader = null;
-        try {
-            reader = new BufferedReader(new FileReader(file));
+        try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
             StringBuffer buffer = new StringBuffer();
             String line = reader.readLine();
             while (line != null) {
@@ -67,10 +65,6 @@ public class FileReporterTest {
                 }
             }
             return buffer.toString();
-        } finally {
-            if (reader != null) {
-                reader.close();
-            }
         }
     }
 

pmd-dist/src/test/java/net/sourceforge/pmd/it/ZipFileExtractor.java

@@ -39,8 +39,7 @@ public class ZipFileExtractor {
      * @throws Exception if any error happens during extraction
      */
     public static void extractZipFile(Path zipPath, Path tempDir) throws Exception {
-        ZipFile zip = new ZipFile(zipPath.toFile());
-        try {
+        try (ZipFile zip = new ZipFile(zipPath.toFile())) {
             Enumeration<ZipArchiveEntry> entries = zip.getEntries();
             while (entries.hasMoreElements()) {
                 ZipArchiveEntry entry = entries.nextElement();
@@ -57,8 +56,6 @@ public class ZipFileExtractor {
                     }
                 }
             }
-        } finally {
-            zip.close();
         }
     }
 
@@ -70,15 +67,12 @@ public class ZipFileExtractor {
      */
     public static List<String> readZipFile(Path zipPath) throws Exception {
         List<String> result = new ArrayList<>();
-        ZipFile zip = new ZipFile(zipPath.toFile());
-        try {
+        try (ZipFile zip = new ZipFile(zipPath.toFile())) {
             Enumeration<ZipArchiveEntry> entries = zip.getEntries();
             while (entries.hasMoreElements()) {
                 ZipArchiveEntry entry = entries.nextElement();
                 result.add(entry.getName());
             }
-        } finally {
-            zip.close();
         }
         return result;
     }