can't figure out how to handle the fifth requirement

Question about the task

Task about algorithms

Java Syntax, Level 5, Lesson 12

Resolved

doesn't work with negative values

Write a program that:
1. reads a number N (must be greater than 0) from the console
2. reads N numbers from the console
3. Displays the maximum of the N entered numbers.

Requirements:

The program should read the numbers from the keyboard.
The program must display a number on the screen.
The class must have a public static void main method.
Don't add new methods to the Solution class.
The program should display the maximum of the N entered numbers.
The program should not display anything if N is less than or equal to 0.

package com.codegym.task.task05.task0532; import java.io.*; /* Task about algorithms */ public class Solution { public static void main(String[] args) throws Exception { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); int ray= Integer.parseInt(reader.readLine()) ; if (ray>0) {int maximum=0; int []arr=new int[ray]; for(int i=0;i<arr.length;i++){ int a=Integer.parseInt(reader.readLine()); if(maximum<a){maximum=a;} } System.out.println(maximum); } } }