how do you sort an array with different elements

Question

I have to sort the following array by the items name (the second element) how do I do this? I am stuck.

    items[0] = new Product("001","Glue sticks",6,.06);
    items[1] = new Product("002","Six inch rulers",25,.59);
    items[2] = new Product("003","Paper-ream",5,6.99);
    items[3] = new Product("004","Black ink pens",15,.97);
    items[4] = new Product("005","No. 2 pencils",20,.30);

Let's start from a basic question: how do you compare two Product objects? How do you know which is "greater" than the other? — RealSkeptic, Nov 01 '14 at 18:59

ToYonos · Answer 1 · 2014-11-01T19:09:50.247

1

Use a Comparator

Arrays.sort(items, new Comparator<Product>()
{
    @Override public int compare(final Product p1, Product p2)
    {
        // TODO check for null object
        return p1.getName().compareTo(p2.getName());
     }
});

edited Nov 01 '14 at 19:09

answered Nov 01 '14 at 19:02

ToYonos

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Thank you for responding. I am new to programming. Do I need to initialize p1 and p2? – Dr. Maria ReGester Nov 01 '14 at 20:23
I went back into my code and put it in a different spot and it worked. Thank you sooooo much. I have been stuck at this point too long. – Dr. Maria ReGester Nov 01 '14 at 20:30

score 0 · Answer 2 · answered Nov 01 '14 at 18:57

0

maybe is better you use from arraylist and arraylist.sort() method

answered Nov 01 '14 at 18:57

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how do you sort an array with different elements

2 Answers2