Trouble populating an array using for loop - java

Question

I'm having some problems automatically populating two arrays using for loop. I know how to do it manually but it's obviously not the right way. now the code looks like that:

    Scanner scan = new Scanner(System.in);

     String [] allStockCodes = new String [5];
     int [] stockPrices = new int [5];

     Stock s0 = new Stock ("TEVA", 100);
     Stock s1 = new Stock ("APPLE", 45);
     Stock s2 = new Stock ("GOOGLE", 765);
     Stock s3 = new Stock ("IBM", 76);
     Stock s4 = new Stock ("MICROSOFT", 436);

     allStockCodes[0] = s0.getCode();
     allStockCodes[1] = s1.getCode();
     allStockCodes[2] = s2.getCode();
     allStockCodes[3] = s3.getCode();
     allStockCodes[4] = s4.getCode();


    stockPrices[0] = s0.getPrice();      
    stockPrices[1] = s1.getPrice();   
    stockPrices[2] = s2.getPrice();   
    stockPrices[3] = s3.getPrice();   
    stockPrices[4] = s4.getPrice();

as you can see there are two arrays, one needed to be populated with string and the other with int. I'm using two constructors the get the string (getCode) and the int (getPrice). So how do I build the loop correctly?

"some problems" what problems?

Raedwald
– Raedwald

2013-12-04 12:52:03 +00:00
Commented Dec 4, 2013 at 12:52 — Raedwald
– Raedwald, Commented Dec 4, 2013 at 12:52

Vimal Bera · Accepted Answer · 2013-12-04 12:47:28Z

3

Yea obviously it doesn't look good. Try this :

 Stock[] temp = new Stock[]{s0,s1,s2,s3,s4};
     for(int i=0;i<5;i++){
         allStockCodes[i] = temp[i].getCode();
         stockPrices[i] = temp[i].getPrice();        
     }

And if possible try to fetch Stock object in Array only. You can use ArrayList collection too.

answered Dec 4, 2013 at 12:47

Vimal Bera

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Comments

Constantin · Accepted Answer · 2013-12-04 13:13:37Z

1

I would pass through Lists:

List<Stock> stocks = new ArrayList<Stock>();
stocks.add(new Stock ("TEVA", 100));
stocks.add(new Stock ("APPLE", 45));
stocks.add(new Stock ("GOOGLE", 765));
stocks.add(new Stock ("IBM", 76));
stocks.add(new Stock ("MICROSOFT", 436));

List<String> allStockCodesList = new ArrayList<String>();
List<Integer> stockPricesList = new ArrayList<Integer>();

for (Stock entry: stocks) {
  allStockCodesList.add(enty.getCode());
  stockPricesList.add(entry.getprice());
}

edited Dec 4, 2013 at 13:13

Constantin

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answered Dec 4, 2013 at 12:47

Mathias G.

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