Help sort topic revised

Question

Sorry about that. Before i proceed with the code I will say that I need help trying to determine where to put a sort statement and what sort statement should I use. I have three classes and have no idea how to sort the items by Product name. For instance, I have staples, books, and printers in my code. How do I get it to display these names and all of the corresponding information in alphabetical order. So with that said, here is the code.
Program part 1:
// CheckPoint: Inventory Program Part 1
// Display product information
public class Product1 //declare class
      //declare instance variables
      private int productNumber,
                    inStock;private String productName; // List of instance variables unique to object
private double unitPrice;
  //constructor to handle no input and set defaults
      public Product1()
      //constructor to handle input parameters
      public Product1( int number, String name, int stock, double perPrice )
         productNumber = number;
         productName = name;
         inStock = stock;
         unitPrice = perPrice;
      public void setProductNumber( int number ) //stores product number
         productNumber = number;
      public void setProductName( String name ) //stores product name
         productName = name;
      public void setInStock( int stock ) //stores amount of product in stock
         inStock = stock;
      public void setUnitPrice( double perPrice ) //stores the unit price of product
          unitPrice = perPrice;
      public int getProductNumber() //allows a call to retrieve product number
         return productNumber;
      public String getProductName() //allows a call to retrieve the product name
         return productName;
      public int getInStock() //allows a call to retrieve stock info
         return inStock;
      public double getUnitPrice() //allows a call to retrieve unit price
         return unitPrice;
      public double getInventoryValue()
         return ( (double)inStock * unitPrice );
Program part 2:
import java.text.DecimalFormat;// Imports a utility that will format items to currency.
public class Inventory1
      private final int maxInventory = 30; // Sets maximum number of elements in the array.
      private Product1 items[] = new Product1[ maxInventory ]; // creates an array of Product1 objects comprised of all of the components.
      DecimalFormat formatter = new DecimalFormat( "$##,###.00" ); creates a formatter object to set items to currency display.
      public void addProduct( Product1 item ) // method adds a product to an array and sets it to the variable name item.
         for ( int i = 0; i < maxInventory; i++ )
            if (items[i] == null)
               items[i] = item;
               return;
      public double getTotalInventoryValue() // method ensures if there are items in array and adds inventory values of specific products to each other.
         double sum = 0.0;
         for ( Product1 item : items )
            if ( item != null )
               sum += item.getInventoryValue();
         return sum;
      public void displayInventory() // Ensures that if there are items in the array and displays them in chart form.
         boolean hasItems = false;
         for ( Product1 item : items )
            if ( item != null)
               hasItems = true;
               System.out.printf( "%8d%12s%11d%13.2f%14.2f", item.getProductNumber() , item.getProductName(), item.getInStock(), item.getUnitPrice(),
                  item.getInventoryValue() );       
               System.out.println( "" ); // display space
               System.out.println("");
Program part 3:
import java.text.DecimalFormat; // import to display selected items as currency.
public class InventoryTest1
static DecimalFormat formatter = new DecimalFormat( "$##,###.00" ); // object created for use to any object that is created as an instance of this   
      public static void main( String args[] ) // executes program.
         Product1 item1 = new Product1( 001, "Staples", 5, 2.99 ); // Initialize objects with parameters.
         Product1 item2 = new Product1( 002, "Books", 10, 15.00 );
         Product1 item3 = new Product1( 003, "Printers", 20, 55.00 );
         Inventory1 myInventory1 = new Inventory1(); // Initialize object of Inventory1.
         System.out.println("");
         System.out.printf( "%s%12s%11s%13s%14s", "Product#", "Name", "In Stock", "Unit Price", "Stock Value" );
         System.out.println("");
         System.out.println("");
         myInventory1.addProduct( item1 );
         myInventory1.addProduct( item2 );
         myInventory1.addProduct( item3 );
         myInventory1.displayInventory(); //call Inventory1 method to display product info.
         System.out.println( "" ); // display space
         System.out.println("");
         System.out.println( "Total value of inventory is: " );
         System.out.println ( formatter.format(myInventory1.getTotalInventoryValue() ) ); // display inventory total as currency.
  

Answer 1

Next time if you want to edit a post, use the edit button which appears at the right top corner of the posting. Do not use the browser back button for that. Otherwise you would create a new topic again, of which the forum regulars may see as very rude.
Another hint: the post message field has a 'Preview' tab. Make use of it if you just want a preview of how the post is going to look like.