Output to TextArea

[ljk8950]

Below is my program. How do I get the contents to display in TextArea?

// CheckPoint:  Inventory4.java
// Week 7
// This program calculates inventory value

import java.awt.*;
import javax.swing.*;

public class Inventory4
{

     // main method begins program execution
     public static void main( String args[] )
     {
          
          // display a welcome message to the InventoryProgramPart4 user
          System.out.println( "Welcome to Inventory Program Part 4!" );

          // office supplies
          
          supplies[] supplies = new supplies[100]; // an array of 100 supplies
          manufacturer[] manufacturer = new manufacturer[100];
                
          manufacturer notepads = new manufacturer
               ( 4000, "notepads", 60, 2.75, "Ampad" );
          manufacturer pencils = new manufacturer
               ( 5000, "pencils", 75, 1.25, "Bic" );
          manufacturer folders = new manufacturer
               ( 2000, "folders", 30, 4.75, "3M" );
          manufacturer envelopes = new manufacturer
               ( 1000, "envelopes", 15, 5.25, "Universal" );
          manufacturer markers = new manufacturer
               ( 3000, "markers", 45, 3.50, "Sanford" );
          manufacturer temp[] = new manufacturer[1];
          for( int i = 0; i < args.length - 1; i++ )
          {
               for( int j = 0; j < args.length - 1; j++ )
               {
                    if( manufacturer[j].getSuppliesName().compareToIgnoreCase( 
                         manufacturer[j+1].getSuppliesName() ) > 0 )
                    {
                         temp[0] = manufacturer[j];
                         manufacturer[j] = manufacturer[j+1];
                         manufacturer[j+1] = temp[0];
                    } // end if
               } // end for
          } // end for
                             
          // display the inventories one at a time
          envelopes.showInventory();
          folders.showInventory();
          markers.showInventory();
          notepads.showInventory();
          pencils.showInventory();

          // sort supplies by name
          for ( int i = 0; i < args.length; i++ )
          System.out.println( args[i] + ", " );

          double array[] = { 82.69, 149.63, 165.38, 173.25, 98.44 };
          double total = 0;

          // add each element's value to total
          for ( int counter = 0; counter < array.length; counter++)
               total += array[ counter ];
          System.out.printf( "\nTotal inventory value is: $%.2f\n", total );

          System.out.println( "\nThank you for using Inventory Program Part 4!\n" );
 
          javax.swing.JTextArea ta = new javax.swing.JTextArea( 10, 20 );
               for( int i = 0; i < args.length; i++ )
               {
                    ta.append( args[i].toString()+"\n" );  
               } // end for

          {
          javax.swing.JFrame frame = new javax.swing.JFrame();
          frame.getContentPane().add(new javax.swing.JScrollPane(ta) );
          frame.pack();
          frame.setLocationRelativeTo( null );
          frame.setDefaultCloseOperation( javax.swing.JFrame.EXIT_ON_CLOSE );
          frame.setVisible( true );
          } // end frame
         
     } // end main

} // end class Inventory4

// Office Supplies
class supplies
{
     public int suppliesNumber;
     public String suppliesName = new String();
     public int suppliesUnits;
     public double suppliesPrice;

     // set supplies number
     public void setSuppliesNumber( int number )
     {
          this.suppliesNumber = number;
     } // end method set supplies number

     // return supplies number
     public int getSuppliesNumber()
     {
          return suppliesNumber;
     } // end method get supplies number

     // set supplies name
     public void setSuppliesName( String name )
     {
          this.suppliesName = name;
     } // end method set supplies name

     // return supplies name
     public String getSuppliesName()
     {
          return suppliesName;
     } // end method get supplies name

     // set supplies in stock
     public void setSuppliesUnits( int units )
     {
          this.suppliesUnits = units;
     } // end method set supplies units

     // return supplies units
     public int getSuppliesUnits()
     {
          return suppliesUnits;
     } // end method get supplies units

     // set supplies price
     public void setSuppliesPrice( double price )
     {
          this.suppliesPrice = price;
     } // end method set supplies price

     // return supplies price
     public double getSuppliesPrice()
     { 
          return suppliesPrice;
     } // end method get supplies price

     // calculate supplies inventory value
     public double getValue()
     {
          return suppliesUnits * suppliesPrice;
     } // end method supplies inventory value 

    // four-argument constructor
     supplies( int number, String name, int units, double price )
     { 
          suppliesNumber = number;
          suppliesName = name;
          suppliesUnits = units;
          suppliesPrice = price;
     } // end four-argument constructor

    // display inventory
     public void showInventory()
     {
          System.out.println(); // outputs blank line

          System.out.println( "Product Number:  "+suppliesNumber );
          System.out.println( "Product Name:  "+suppliesName );
          System.out.println( "Units in Stock:  "+suppliesUnits );
          System.out.printf( "Unit Price:  $%.2f", suppliesPrice );

          // value() method and display the value
          System.out.printf( "\nInventory value of "+suppliesName+ " is = $%.2f\n",
               getValue() );                           
  
    } // end display inventory

} // end class supplies

class manufacturer extends supplies
{
     // holds the supplies manufacturer
     private String suppliesManufacturer;

     // five-argument constructor
     public manufacturer( int number, String name, int units,
          double price, String manufacturer )
     {
          super( number, name, units, price );
          // validate and store supplies manufacturer
          setSuppliesManufacturer( manufacturer ); 
     } // end five-argument constructor

     // set supplies manufacturer
     public void setSuppliesManufacturer( String manufacturer )
     {
          this.suppliesManufacturer = manufacturer;
     } // end method set supplies manufacturer

     // return supplies manufacturer
     public String getSuppliesManufacturer()
     {
         return suppliesManufacturer;
     } // end method get supplies manufacturer

     // calculate restocking fee
     public double getRestockingFee()
     {
          return super.getValue() * 0.05;
     } //end method calculate restocking fee
          
     //return String representation of suppliesManufacturer
     public String toString()
     {
          String formatString = "Manufacturer:  %s";
          formatString += "\nRestocking Fee:  $%.2f\n";
          formatString = String.format( formatString, suppliesManufacturer,
               super.getValue() * 0.05 );          
          return( formatString );
     } // end toString()

     // display inventory
     public void showInventory()
     {
          super.showInventory();
          System.out.println( toString() );
          
          // Display value plus restocking fee
          System.out.printf( "\nTotal Inventory value of "+suppliesName+ " is = $%.2f\n",
               super.getValue() * 0.05 + super.getValue() );     

     } // end method display inventory

} // end class manufacturer

[Norm]

the contents to display in TextArea

Look at the API doc for the TextArea and read the set and append methods.
What are "the contents"?

[ljk8950]

What is the API doc? I am new to Java and not sure of all the terminology.

[Norm]

Application Program Interface documentation. It documents all the java classes and their fields and methods.
You will need to be very familiar with this to program.
Its a free down load from the Sun site

[serjant]

If you need to display some text in the JTextArea ,use the same as you did with args in your program,ta.append(yourstring+"\n" );