What is the tine complexity of this code?

I suggest you an experimental approach, try

public static void main(String[] args)  throws InterruptedException {
      Scanner sc = new Scanner(System.in);
      int n = sc.nextInt();
      long start = System.currentTimeMillis();
      for(int i=0; i<n; i++){
          for(int j=0; j<n; j++){
              Thread.sleep(1000);
              System.out.println(i + "->"+ j);
          }
      }
      double elapsed_seconds = (System.currentTimeMillis() - start) / 1000;
      System.out.println("seconds " +  elapsed_seconds);
  }

with different input values, in order to find out the expected behaviour.

While we are more than willing to help those that are stuck, that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for us to do it all for you.