Monotonic stack solves stock price span

class StockSpanner {
    
    
    Stack<Integer> stack1,stack2;
    public StockSpanner() {
    
    
         stack1=new Stack<>(); 
         stack2=new Stack<>(); 
    }
    
    public int next(int price) {
    
    
        int t=1;
        if(stack1.empty()){
    
    
            stack1.push(price);
            stack2.push(1);
            return 1;
        }else {
    
    
            if(stack1.peek()>price){
    
    
                stack1.push(price);
            stack2.push(1);
            return 1;
            }else{
    
    
                while(!stack1.empty()&&stack1.peek()<=price){
    
    
                    stack1.pop();
                    t+=stack2.pop();
                }
                 stack1.push(price);
                stack2.push(t);
                return t;
            }

        }

    }
}