diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/src/main/java/org/example/basicprograms/Demo.java b/src/main/java/org/example/basicprograms/Demo.java
deleted file mode 100644
index 308ad03..0000000
--- a/src/main/java/org/example/basicprograms/Demo.java
+++ /dev/null
@@ -1,11 +0,0 @@
-package org.example.basicprograms;
-
-public class Demo {
-    public int sum(int a, int b,int c){
-        int d=a+b+c;
-        return d;
-    }
-    public void addition(int a, int b,int c){
-        int d=a+b+c;
-    }
-}
diff --git a/src/main/java/org/example/basicprograms/GitDemo.java b/src/main/java/org/example/basicprograms/GitDemo.java
new file mode 100644
index 0000000..5e6bcee
--- /dev/null
+++ b/src/main/java/org/example/basicprograms/GitDemo.java
@@ -0,0 +1,5 @@
+package org.example.basicprograms;
+
+public class GitDemo {
+
+}
diff --git a/src/main/java/org/example/basicprograms/Main.java b/src/main/java/org/example/basicprograms/Main.java
deleted file mode 100644
index 3ab6832..0000000
--- a/src/main/java/org/example/basicprograms/Main.java
+++ /dev/null
@@ -1,14 +0,0 @@
-package org.example.basicprograms;
-
-import java.awt.*;
-
-public class Main {
-    public static void main(String[] args) {
-    Demo sandeep=new Demo();
-    int result=sandeep.sum(10,20,30);
-    int result1=sandeep.sum(40,50,60);
-        sandeep.addition(100,200,300);
-        System.out.println(result);
-        System.out.println(result1);
-    }
-}
diff --git a/src/main/java/org/example/basicprograms/MatOperation.java b/src/main/java/org/example/basicprograms/MatOperation.java
deleted file mode 100644
index cc736fd..0000000
--- a/src/main/java/org/example/basicprograms/MatOperation.java
+++ /dev/null
@@ -1,41 +0,0 @@
-package org.example.basicprograms;
-
-import java.util.Scanner;
-
-public class MatOperation {
-    public double matoperation(int number,double x, double y){
-        double z=0;
-        switch (number){
-            case 1: z=x+y;
-                System.out.println("Addition is:::"+z);
-                break;
-            case 2: z=x-y;
-                System.out.println("Substraction is:::"+z);
-                break;
-            case 3: z=x*y;
-                System.out.println("Multiplication is:::"+z);
-                break;
-            case 4: z=x/y;
-                System.out.println("Division is:::"+z);
-                break;
-            case 5: z=x%y;
-                System.out.println("Modulus is:::"+z);
-                break;
-            default:
-                System.out.println("Invalid choice");
-        }
-        return z;
-    }
-
-    public static void main(String[] args) {
-        MatOperation obj=new MatOperation();
-        Scanner scanner=new Scanner(System.in);
-        System.out.println("Please enter value for number");
-        int number=scanner.nextInt();
-        System.out.println("Please enter value for x");
-        double x=scanner.nextDouble();
-        System.out.println("Please enter value for y");
-        double y=scanner.nextDouble();
-        obj.matoperation(number,x,y);
-    }
-}
diff --git a/src/main/java/org/example/corejava/DemoArrayList.java b/src/main/java/org/example/corejava/DemoArrayList.java
index 0040619..39c156c 100644
--- a/src/main/java/org/example/corejava/DemoArrayList.java
+++ b/src/main/java/org/example/corejava/DemoArrayList.java
@@ -6,7 +6,7 @@
 
 public class DemoArrayList {
 
-    public void iterateTheArrays(){
+    public void iterateTheArrays() {
         ArrayList<Integer> test = new ArrayList<>();
         test.add(10);
         test.add(20);
@@ -24,7 +24,7 @@ public void iterateTheArrays(){
         }
     }
 
-    public void Arrays(){
+    public void Arrays() {
         ArrayList<Integer> test = new ArrayList<>();
         test.add(10);
         test.add(20);
@@ -38,10 +38,10 @@ public void Arrays(){
         }
         HashSet<Integer> test1 = new HashSet<>(test);
         for (Integer value : test1) {
-            System.out.println("array of I is   " + value);
         }
     }
-    public static void main(String[] args) {
+        public static void main (String[] args){
 
+        }
     }
-}
+