diff --git a/docs/test/test_backtracking_nqueen.jav b/docs/test/test_backtracking_nqueen.jav
deleted file mode 100644
index 0bd6ab17..00000000
--- a/docs/test/test_backtracking_nqueen.jav
+++ /dev/null
@@ -1,26 +0,0 @@
-package com.gpcoder.junit.util;
-import org.junit.Assert;
-import org.junit.Test;
-public class solveNQueensTest {
-     public void dfsTest() {
-      List<List<String>> resultList = new LinkedList<>();
-      final int[] expected = [2, 4, 6, 8, 3, 1, 7, 5];
-      final int[] result = new int[8];
-      dfs(resultList, result, 0, 8);
-      Assert.assertArrayEquals(expected, result);
-     }
-     public void dfsTest2() {
-      List<List<String>> resultList = new LinkedList<>();
-      final int[] expected = [2, 4, 1, 3];
-      final int[] result = new int[4];
-      dfs(resultList, result, 0, 4);
-      Assert.assertArrayEquals(expected, result);
-     }
-      public void dfsTest3() {
-      List<List<String>> resultList = new LinkedList<>();
-      final int[] expected = [];
-      final int[] result = new int[3];
-      dfs(resultList, result, 0, 3);
-      Assert.assertArrayEquals(expected, result);
-     }
-}