Random Output

[hemin92]

i trying to make a program that gives a list of tv manufacturers and their price range. I have another box that says in stock and out of stock and gives the stores to get it from. I want to be able to click on a tv type and the stock box will randomly say in stock or out of stock how do i do this? Here is my code so far:

Java:

import javax.swing.*; import java.awt.*; import java.awt.event.*;        import java.util.*; public class TvManufacturer implements ActionListener {  JFrame frame;  JPanel contentPane;  JComboBox tvNames;  JComboBox Stock;  JLabel tvListPrompt, Price,Store;       public TvManufacturer(){         /* Create and set up the frame */         frame = new JFrame("TV Manufacturer (EDITION 10.0)");         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);         /* Create a content pane with a BoxLayout and empty borders */         contentPane = new JPanel();         contentPane.setLayout(new BoxLayout(contentPane, BoxLayout.PAGE_AXIS));         contentPane.setBorder(BorderFactory.createEmptyBorder(9, 0, 100, 100));              /* Create a combo box and a descriptive label */      tvListPrompt = new JLabel("Select a Manufacturer:");     tvListPrompt.setAlignmentX(JLabel.RIGHT_ALIGNMENT);      contentPane.add(tvListPrompt);            /* Create a combo box and a descriptive label */      tvListPrompt = new JLabel("Stock Check: ");      tvListPrompt.setAlignmentX(JLabel.LEFT_ALIGNMENT);      contentPane.add(tvListPrompt);           String[] names = {"Sony", "Sharp", "Panasonic", "Samsung", "LG", "Toshiba"};      tvNames = new JComboBox(names);     tvNames.setAlignmentX(JComboBox.RIGHT_ALIGNMENT);      tvNames.setSelectedIndex(0);     tvNames.addActionListener(this);      contentPane.add(tvNames);            String[] stock = {"IN STOCK AT:","OUT OF STOCK AT:", };      Stock = new JComboBox(stock);     Stock.setAlignmentX(JComboBox.LEFT_ALIGNMENT);      Stock.setSelectedIndex(0);     Stock.addActionListener(this);      contentPane.add(Stock);      /* Create and add a label that will display the Tv price range */     Price = new JLabel("$499- $19,999");      Price.setBorder(BorderFactory.createEmptyBorder(0, 0, 10, 10));     Price.setAlignmentX(JComboBox.RIGHT_ALIGNMENT);      contentPane.add(Price);         ---->      /* Create and add a label that will display the Tv price range */     Store = new JLabel("Walmart, Best Buy, Future Shop");      Store.setBorder(BorderFactory.createEmptyBorder(0, 10, 10, 10));    Store.setAlignmentX(JComboBox.LEFT_ALIGNMENT);      contentPane.add(Store); <----------                                /* Add content pane to frame */         frame.setContentPane(contentPane);         /* Size and then display the frame. */         frame.pack();         frame.setVisible(true);     }          /**   * Handle a selection from the combo box   * post: The TV price range for the selected TV Manufacturer has been displayed.   */     public void actionPerformed(ActionEvent event) {   JComboBox comboBox = (JComboBox)event.getSource();   String tvName = (String)comboBox.getSelectedItem();   String Stock = (String)comboBox.getSelectedItem();   if (tvName == "Sony") {    Price.setText("$499 - $19,999");   } else if (tvName == "Sharp") {    Price.setText("$349.99 - $5,999.98");   } else if (tvName == "Panasonic") {    Price.setText("$699.99 - $6,999.98");   } else if (tvName == "Samsung") {    Price.setText("$379.99 - $5,299.98");   } else if (tvName == "LG") {   Price.setText("$399.99 - $3,799.98");   } else if (tvName == "Toshiba") {    Price.setText("$289.99 - $2,599.99");   }    -------> if (Stock == "IN STOCK AT:") {        Store.setText("Walmart, Best Buy, Future Shop");      }else if (Stock == "OUT OF STOCK AT:"); {        Store.setText("Walmart, Best Buy, Future Shop");{        }}} <--------                              /**  * Main method  * Create and show the GUI.  */     public static void runGUI() {         JFrame.setDefaultLookAndFeelDecorated(true);       TvManufacturer prices  = new TvManufacturer();     }           public static void main(String[] args) {             javax.swing.SwingUtilities.invokeLater(new Runnable() {             public void run() {                 runGUI();             }         });     } }

The code with the arrow is what i want to randomly show when a tv brand is selected



Mod Edit: Remember to use syntax tags! Thanks

code:

[syntax="java"]Code Here[/syntax]

[hemin92]

I need help!! Can someone please tell me how to do random out?

[Insectoid]

Math.random()

[HeavenAgain]

basically have a look at the following 2 methods.

Java:

import java.util.Random; public class RandomNumber {         public static void main(String[] args)         {                 //method number 1                 System.out.println(Math.random());                 //method number 2                 int n = 2; // any number                 Random rand = new Random();                 System.out.println(rand.nextInt(n));         } }

take a look at the API on these 2 approaches

• http://java.sun.com/javase/6/docs/api/java/lang/Math.html#random()
• http://java.sun.com/javase/6/docs/api/java/util/Random.html

[hemin92]

How do i incorporate random into my program i don't know how to