هذا مشروع خاص بي و فيه أخطأ

package HomeWork;

public class SonyProduct 
{
	private String name;
	private int price;

	public SonyProduct()
	{
	name="no name";
	price=0;
	}

public SonyProduct(String na,int pr)
{
	this.name=na;
	this.price=pr;
}

public SonyProduct(SonyProduct pr)
{
	name = pr.name;
	price = pr.price;
}

public String getName() {
	return name;
}

public void setName(String name) {
	this.name = name;
}

public int getPrice() {
	return price;
}

public void setPrice(int price) {
	this.price = price;
}

public void display()
{
	System.out.println("name   :  "+ name);
	System.out.println("price  :  "+ price);
}


}

public class SonyGroup 
{
	private SonyProduct s[];
	private int nb;

public SonyGroup(int size)
{
	s=new SonyProduct[size];
	nb=0;

}

public void add(SonyProduct SS)
{
	if(nb<s.length)
	{
	s[nb]=new SonyProduct(SS);
	nb++;
	}
	else{
		System.out.println("المصفوفة ممتلئة ");
	}

}

public int search(int d)
{
	int q=0;

	for(int i=0;i<nb;i++)
	{

		if(s.getPrice()==d)
		{
			 q=i;
		}
		return q;

	}
	return -1;
}
public String delet(String d)
{
	for(int i=0;i<nb;i++)
	{
		if(s.getName().equals(d))
		{
			s=s[nb-1];
			nb--;
			s[nb]=null;
			return "تم الحذف";
		}
	}
		return "آسف هذا الإسم غير موجود";


}

public  SonyProduct max()
{
	int a=0;

	int max=s[0].getPrice();

	for(int i=1 ;i<nb;i++)
	{
		if(s.getPrice()>max)
		{
			max=s.getPrice();
			a=i;
		}
		return s[a];
}
	return null;

}

public  SonyProduct min()
{
	int a=0;
	int min=s[0].getPrice();

	for(int i=1;i<nb;i++)
	{
		if(s.getPrice()<min)
		{
			min=s.getPrice();
			a=i;
		}
		return s[a];
	}
	return null;
}

public void average()
{
	int total=0;
	int a=0;
	double aver=0;

	for(int i=0;i<nb;i++)
	{
		total+=s.getPrice();

	}

	aver=total/nb;

	System.out.println("averag:"+aver);
}

public void output()
{
	for(int i=0;i<nb;i++)
	{
		s.display();

	}
}

}

package HomeWork;

;import java.util.Scanner;



public class test {
	public static void main(String []args)
	{
		Scanner input=new Scanner(System.in);
		System.out.println("Enter Size area");
		int size =input.nextInt();
		String q ;
		int z,n;

		SonyGroup S=new SonyGroup(size);

		SonyProduct p=new SonyProduct();
		SonyProduct res;
		SonyProduct pe;


		do{


			System.out.println("1-add SonyGroup*2-delete in SonyProducts*3-search*4-min*5-max*6-Average*7-display");
			System.out.println("Please enter choice:");
			n=input.nextInt();
			if(n==1)
			{
				System.out.println("Enter name");
				 q=input.next();
				System.out.println("Enter price");
				 z=input.nextInt();
				p.setName(q);
				p.setPrice(z);
				S.add(p);


			}
			if(n==2)
			{

				System.out.println("Enter name");
				 q=input.next();
				S.delet(q);


			}
			if(n==3)
			{
				System.out.println("Enter price");
				z=input.nextInt();
				S.search(z);
				S.output();
			}
			if(n==4)
			{
				res =S.min();
				res.display();


			}
			if(n==5){
				res =S.max();
				res.display();
			}
			if(n==6)
			{
				S.average();

			}
			if(n==7)
			{
				S.output();
			}


		} while(n<=7);
		if(n>8)
		{
			System.out.println("شكرًا");
		}


	}



	}

و هذه هي المخرجات :

Enter Size area
100
1-add SonyGroup*2-delete in SonyProducts*3-search*4-min*5-max*6-Average*7-display
Please enter choice:
1
Enter name
a
Enter price
10
1-add SonyGroup*2-delete in SonyProducts*3-search*4-min*5-max*6-Average*7-display
Please enter choice:
1
Enter name
b
Enter price
20
1-add SonyGroup*2-delete in SonyProducts*3-search*4-min*5-max*6-Average*7-display
Please enter choice:
1
Enter name
c
Enter price
30
1-add SonyGroup*2-delete in SonyProducts*3-search*4-min*5-max*6-Average*7-display
Please enter choice:
1
Enter name
d
Enter price
40
1-add SonyGroup*2-delete in SonyProducts*3-search*4-min*5-max*6-Average*7-display
Please enter choice:
7
name   :  a
price  :  10
name   :  b
price  :  20
name   :  c
price  :  30
name   :  d
price  :  40
1-add SonyGroup*2-delete in SonyProducts*3-search*4-min*5-max*6-Average*7-display
Please enter choice:
2
Enter name
a
1-add SonyGroup*2-delete in SonyProducts*3-search*4-min*5-max*6-Average*7-display
Please enter choice:
7
name   :  d
price  :  40
name   :  b
price  :  20
name   :  c
price  :  30
1-add SonyGroup*2-delete in SonyProducts*3-search*4-min*5-max*6-Average*7-display
Please enter choice:
4
name   :  b
price  :  20
1-add SonyGroup*2-delete in SonyProducts*3-search*4-min*5-max*6-Average*7-display
Please enter choice:
6
averag:30.0
1-add SonyGroup*2-delete in SonyProducts*3-search*4-min*5-max*6-Average*7-display
Please enter choice:
5
name   :  d
price  :  40
1-add SonyGroup*2-delete in SonyProducts*3-search*4-min*5-max*6-Average*7-display
Please enter choice
3
Enter price
20
name   :  d
price  :  40
name   :  b
price  :  20
name   :  c
price  :  30
1-add SonyGroup*2-delete in SonyProducts*3-search*4-min*5-max*6-Average*7-display
Please enter choice:
8

أنا عارف إني طولت عليكم :P بس سؤالي لاحظوا في المخرجات إذا كتبت الرقم 3 و هو يدل على search يخرج جميع ما أضفت و هذا يعني أن search لا يعمل جيدًا فكيف أتجاوز الخطأ