diff --git a/java/Chapter 11/Introduction/TestQuicksort.java b/java/Chapter 11/Introduction/TestQuicksort.java
new file mode 100644
index 00000000..b1aa5fca
--- /dev/null
+++ b/java/Chapter 11/Introduction/TestQuicksort.java	
@@ -0,0 +1,56 @@
+package Introduction;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.Assert.assertArrayEquals;
+import org.junit.jupiter.api.Test;
+
+
+class TestQuicksort {
+
+	@Test
+	void test1() {
+		Quicksort quicksort1 = new Quicksort();
+		int[] arr1 = {0,9,8,1};
+		assertArrayEquals({0,1,8,9},quicksort1.quickSort(arr1, 0, 3));
+		
+		
+	}
+	
+	@Test
+	void test2() {
+		Quicksort quicksort2 = new Quicksort();
+		int[] arr2 = {3,0,7,-2,1};
+		assertArrayEquals({-2,0,1,3,7},quicksort2.quickSort(arr2, 0, 4));
+		
+		
+	}
+
+	@Test
+	void test3() {
+		Quicksort quicksort3 = new Quicksort();
+		int[] arr3 = {-6,2,0};
+		assertArrayEquals({-6,0,2},quicksort3.quickSort(arr3, 0, 2));
+		
+		
+	}
+
+	@Test
+	void test4() {
+		Quicksort quicksort4 = new Quicksort();
+		int[] arr4 = {-4,-5,0,7,1,-8};
+		assertArrayEquals({-8,-5,-4,0,1,7},quicksort4.quickSort(arr4, 0, 5));
+		
+		
+	}
+
+	@Test
+	void test5() {
+		Quicksort quicksort5 = new Quicksort();
+		int[] arr5 = {-8,-3,2,0};
+		assertArrayEquals({-8,-3,0,2},quicksort5.quickSort(arr5, 0, 3));
+		
+		
+	}
+
+	
+}