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POJava: CSV file read & write
 

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    <p>I'm reading 2 csv files: <code>store_inventory</code> &amp; <code>new_acquisitions</code>.<br> I want to be able to compare the <code>store_inventory</code> csv file with <code>new_acquisitions</code>. 1) If the item names match just update the quantity in store_inventory. 2) If new_acquisitions has a new item that does not exist in <code>store_inventory</code>, then add it to the <code>store_inventory</code>.</p> <p>Here is what i have done so far but its not very good. I added comments where i need to add taks <strong>1</strong> &amp; <strong>2</strong>.<br> Any advice or code to do the above tasks would be great! thanks.</p> <pre><code> File new_acq = new File("/src/test/new_acquisitions.csv"); Scanner acq_scan = null; try { acq_scan = new Scanner(new_acq); } catch (FileNotFoundException ex) { Logger.getLogger(mainpage.class.getName()).log(Level.SEVERE, null, ex); } String itemName; int quantity; Double cost; Double price; File store_inv = new File("/src/test/store_inventory.csv"); Scanner invscan = null; try { invscan = new Scanner(store_inv); } catch (FileNotFoundException ex) { Logger.getLogger(mainpage.class.getName()).log(Level.SEVERE, null, ex); } String itemNameInv; int quantityInv; Double costInv; Double priceInv; while (acq_scan.hasNext()) { String line = acq_scan.nextLine(); if (line.charAt(0) == '#') { continue; } String[] split = line.split(","); itemName = split[0]; quantity = Integer.parseInt(split[1]); cost = Double.parseDouble(split[2]); price = Double.parseDouble(split[3]); while(invscan.hasNext()) { String line2 = invscan.nextLine(); if (line2.charAt(0) == '#') { continue; } String[] split2 = line2.split(","); itemNameInv = split2[0]; quantityInv = Integer.parseInt(split2[1]); costInv = Double.parseDouble(split2[2]); priceInv = Double.parseDouble(split2[3]); if(itemName == itemNameInv) { //update quantity } } //add new entry into csv file } </code></pre> <p>Thanks again for any help. =]</p>
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