[Java] Ai goi y gium em cai code nay voi

[squallrex]

Em xin loi truoc vi khong viet co dau duoc du` em da~ bat vietkey

em co cai code muon xin moi nguoi gui y giup gium em

public void saveToFile(String filename)
{
File file = new File(filename);
try
{
PrintWriter print = new PrintWriter(file);

int theP = productId.size();
for(int i=0; i < theP; i++)
{
print.println(productId.get(i).toString());
}

int theQ = productId.size();
for(int i=0; i < theQ; i++)
{
print.println(quantity.get(i).toString());
}


print.close();
}

catch (FileNotFoundException e)
{
System.out.println("Unable to load product from " + file + ".");
}

}

public class Tester2
{
public static void main(String[] args)
{

Product p1 = new Product();
p1.loadFromFile("Monitor.txt");
System.out.println("Actual: " + p1.toString());
System.out.println("Expected: Product [id=12345, name=Monitor, description=A freakin great monitor!]");

p1.setId(11111);
p1.setName("another product");
p1.setDescription("Description of another product!");

p1.saveToFile("SaveTest1.pr");
p1 = null;
p1 = new Product();

p1.loadFromFile("SaveTest1.pr");
System.out.println("Actual: " + p1.toString());
System.out.println("Expected: Product [id=11111, name=another product, description=Description of another product!]");

Order o1 = new Order();
o1.loadFromFile("Order1.or");
System.out.println("Actual: " + o1.toString());
System.out.println("Expected: Order [productId=[113489, 201934, 3488, 84432], quantity=[11, 22, 12, 3]]");

o1 = null;
o1 = new Order();
o1.addProduct(1, 4);
o1.addProduct(2, 3);
o1.addProduct(3, 2);
o1.addProduct(4, 1);

o1.saveToFile("SaveTest2.or");
o1 = null;
o1 = new Order();

o1.loadFromFile("SaveTest2.or");
System.out.println("Actual: " + o1.toString());
System.out.println("Expected: Order [productId=[1, 2, 3, 4], quantity=[4, 3, 2, 1]]");

Order o2 = new Order();
System.out.print("Actual: ");
o2.loadFromFile("BadOrder.or");
System.out.println("Expected: Unable to load order from BadOrder.or.");


Product p2 = new Product();
System.out.print("Actual: ");
p2.loadFromFile("BadProduct.pr");
System.out.println("Expected: Unable to load product from BadProduct.pr.");

}
}

Actual: Product [id=0, name=null, description=null]
Expected: Product [id=12345, name=Monitor, description=A freakin great monitor!]
Actual: Product [id=11111, name=another product, description=Description of another product!]
Expected: Product [id=11111, name=another product, description=Description of another product!]
Actual: Order [productId=[], quantity=[]]
Expected: Order [productId=[113489, 201934, 3488, 84432], quantity=[11, 22, 12, 3]]
Actual: Order [productId=[1, 2, 3, 4], quantity=[4, 3, 2, 1]]
Expected: Order [productId=[1, 2, 3, 4], quantity=[4, 3, 2, 1]]
Actual: Expected: Unable to load order from BadOrder.or.
Actual: Expected: Unable to load product from BadProduct.pr.

trong phan product thi em lam ra roi nhung trong phan order thi em chi lam` ra Order [productId=[1, 2, 3, 4], quantity=[4, 3, 2, 1]] con phan Order [productId=[113489, 201934, 3488, 84432], quantity=[11, 22, 12, 3]] thi em lam hoai khong ra

em da su dung rat nhiu cach khac nhau nhung van khong ra duoc.

cam on moi nguoi.