diff --git a/NoDuplicationArray.java b/NoDuplicationArray.java
new file mode 100644
index 0000000..5c1ae0f
--- /dev/null
+++ b/NoDuplicationArray.java
@@ -0,0 +1,71 @@
+package noduplicationarray;
+
+public class NoDuplicationArray {
+    private long[] a;
+    private int n; // number of elements
+
+    public NoDuplicationArray(int max) {
+        this.a = new long[max]; // initialing an array 
+        this.n = 0;             // initial number of elements
+    }
+
+    public boolean find(long key) {       // finding if a particular number present in the array
+        for (int i = 0; i < this.n; i++) 
+        {
+            if (this.a[i] == key) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public void insert(long value) { // inserting elements to the array
+        if (this.n == a.length) {
+            System.out.println("This array is already filled");
+            return;
+        } else {
+            if (find(value)) {
+                System.out.println("Value is already in the array,insertion terminated");
+            } else {
+                a[this.n] = value;
+                this.n++;
+            }
+        }
+    }
+    
+    public boolean delete(long value){
+    for(int i=0;i<this.n;i++){
+    if(a[i]==value){
+        for(int j=i;j<this.n-1;j++){
+       this.a[j]= this.a[j+1];
+        }
+        this.n--;
+        System.out.println("Element is deleted");
+        return true;
+    }
+    }
+     System.out.println("Deletion terminated because value is not found");
+        return false;
+    }
+    
+    public void display(){
+        System.out.println("Elements of array");
+        for(int i=0;i<this.n;i++){
+            System.out.print(this.a[i]+" ");
+        }
+        System.out.println();
+    }
+
+    public static void main(String[] args) {
+        NoDuplicationArray x = new NoDuplicationArray(6);
+        x.insert(9);
+        x.insert(7);
+        x.insert(3);
+        x.insert(9);
+        x.display();
+        x.delete(8);
+        x.display();
+    
+    }
+    
+}