[FEATURE] Finished local server loading

src/main/java/org/parabot/environment/api/utils/FileUtil.java

@@ -2,7 +2,9 @@ package org.parabot.environment.api.utils;
 
 import java.io.File;
 import java.io.FileInputStream;
+import java.io.FileOutputStream;
 import java.io.IOException;
+import java.nio.channels.FileChannel;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 
@@ -65,4 +67,25 @@ public class FileUtil {
 
         return null;
     }
+
+    public static void copyFile(File sourceFile, File destFile)
+            throws IOException {
+        if (!sourceFile.exists()) {
+            return;
+        }
+        if (!destFile.exists()) {
+            destFile.createNewFile();
+        }
+        FileChannel source = null;
+        FileChannel destination = null;
+        source = new FileInputStream(sourceFile).getChannel();
+        destination = new FileOutputStream(destFile).getChannel();
+        if (source != null) {
+            destination.transferFrom(source, 0, source.size());
+        }
+        if (source != null) {
+            source.close();
+        }
+        destination.close();
+    }
 }