空指针异常在调用getter函数时发生。请尽快提供帮助。我最后写了错误。我还提到了发生错误的那一行。不过，部分输出是正确的。

import java.util.Scanner;
public class Solution 
{
    public static void main(String args[] ) throws Exception 
    {
        /* Do not alter code in main method */
         Shirt[] shirts = new Shirt[5];

         Scanner sc = new Scanner(System.in);

         for(int i = 0;i<5;i++)
         {
            int tag = sc.nextInt();sc.nextLine();
            String brand = sc.nextLine();
            double price = sc.nextDouble();sc.nextLine();
            char g = sc.nextLine().charAt(0);
            shirts[i] = new Shirt(tag,brand,price,g);
         }
         double price = sc.nextDouble();
         for(Shirt s: shirts)
         {
              System.out.println(getDiscountPrice(s));            
         }
         Shirt[] result = getShirtWithMoreThanSpecificPrice(shirts,price);
         for(Shirt s: result)
         {
             System.out.println(s.getTag()+" "+s.getPrice()+" "+s.getBrand());//This is where the exception occurs
         }
    }
    public static double getDiscountPrice(Shirt s)
    {
        double p;
        if(s.g=='m')
        {
            p=s.price-((0.1*s.price));
            return p;
        }
        if(s.g=='f')
        {
            p=s.price-((0.2*s.price));
            return p;
        }
        if(s.g=='u')
        {
            p=s.price-((0.3*s.price));
            return p;
        }
            return 0.0;
    }
    public static Shirt[] getShirtWithMoreThanSpecificPrice(Shirt[] shirts,double price)
   {
        Shirt[] sh=new Shirt[5];
        for(int i=0;i<5;i++)
        {
            if(shirts[i].price>price)
            {
                sh[i]=shirts[i];
            }
        }
        return sh;
  }
  }
 class Shirt
 {
    //define the class as per details shared in the question
    int tag;
    String brand; 
    double price;
    char g;
    public Shirt(int tag,String brand,double price,char g)
    {
    this.brand=brand;
    this.g=g;
    this.price=price;
    this.tag=tag;
    }
    public void setG(char g) 
    {
    this.g = g;
    }
    public void setTag(int tag) 
    {
    this.tag = tag;
    }
    public void setBrand(String brand) 
    {
    this.brand = brand;
    }

    public void setPrice(double price) 
    {
    this.price = price;
    }
    public int getTag() 
    {
    return tag;
    }
    public double getPrice() 
    {
    return price;
    }
    public String getBrand() 
    {
    return brand;
    }
     public char getG() 
    {
    return g;
    }
}

错误：

  

线程“ main”中的异常java.lang.NullPointerException在   Solution.main（Solution.java:32

第32行出现错误。我试图初始化变量。没有一个是成功的。