diff --git a/customization/test/NewUtilTest.java b/customization/test/NewUtilTest.java
index 79b484b..46922c9 100644
--- a/customization/test/NewUtilTest.java
+++ b/customization/test/NewUtilTest.java
@@ -338,6 +338,23 @@ public class NewUtilTest {
 	}
 
 
+	@Test
+	public void testSplic(){
+		List<Integer> list = new ArrayList<>();
+		list.add(0);
+		list.add(1);
+		list.add(2);
+		list.add(3);
+		list.add(4);
+		list.add(5);
+		list.add(6);
+		System.out.println(list);
+		System.out.println(list.subList(0,2));
+		list.removeAll(list.subList(0,2));
+		System.out.println(list);
+	}
+
+
 	@Test
 	public void test() {
 		String bizContent = "{\"contractExtension\":\".pdf\",\"contractTitle\":\"PCN Template - Non-Disclosure Agreement (Corporate).pdf\",\"uploadType\":1,\"customerNo\":\"ecef845ba95a409393cb66271a41b0a6\"}";