Remove RandomAccessFile

Author: dungba88

lucene/core/src/test/org/apache/lucene/util/fst/TestFSTs.java

@@ -22,16 +22,15 @@
 
 import java.io.BufferedReader;
 import java.io.ByteArrayOutputStream;
-import java.io.File;
 import java.io.IOException;
-import java.io.RandomAccessFile;
 import java.io.StringWriter;
 import java.io.Writer;
 import java.nio.channels.FileChannel;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.nio.file.StandardOpenOption;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -108,9 +107,8 @@ public void tearDown() throws Exception {
   }
 
   public void testFSAWithFileChannel() throws IOException {
-    File file = createTempFile().toFile();
-    try (RandomAccessFile raf = new RandomAccessFile(file, "rw")) {
-      FileChannel fileChannel = raf.getChannel();
+    Path path = createTempFile();
+    try (FileChannel fileChannel = FileChannel.open(path, StandardOpenOption.READ, StandardOpenOption.WRITE)) {
       String[] strings2 =
           new String[] {
             "station", "commotion", "elation", "elastic", "plastic", "stop", "ftop", "ftation"