Create Implement queue using array

Implement queue using array

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+//Implement queue using array
+
+import java.util.Scanner;
+
+class GfG {
+	public static void main(String args[]) {
+		 Scanner sc = new Scanner(System.in);
+		 int t = sc.nextInt();
+
+		 while(t > 0) {
+			MyQueue obj = new MyQueue();
+			int Q = sc.nextInt();
+
+			while(Q > 0) {
+				int QueryType = 0;
+				QueryType = sc.nextInt();
+
+				if(QueryType == 1) {
+					int a = sc.nextInt();					
+					obj.push(a);
+				}
+        else if(QueryType == 2) {
+  				System.out.print(obj.pop() + " ");
+				}
+
+				Q--;
+			}
+			System.out.println("");
+
+      t--;
+		 }
+	}
+}
+
+class MyQueue {
+
+    int front, rear;
+	  int arr[] = new int[100005];
+
+    MyQueue() {
+		  front=0;
+	  	rear=0;
+	  }
+
+	  void push(int x) {
+	    if(rear == arr.length - 1) {
+	        System.out.println("Overflow");
+	    }
+
+	    else {
+	        arr[rear++] = x;
+	    }
+	} 
+
+	int pop() {
+		if(front == rear || rear == 0) {
+		    return -1;
+		}
+
+		return arr[front++];
+	}
+}