java 得到一个数的负数怎么写 java统计正负数的个数

import java.util.Scanner;
public class day01{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    boolean boo = true;
    int positiveNumber = 0;//正数
    int negativeNumber = 0;//负数
    while (boo) {
      System.out.println("请输出一个数字：");
      int number = sc.nextInt();
      if (number>0) {
        positiveNumber++;
      }else if (number<0) {
        negativeNumber++;
      }else {
        break;

      }
    }
    System.out.println("正数个数为："+positiveNumber+"负数个数为："+negativeNumber);
  }
}