Java GUI problem
- From: "Gilbert Neiva" <gneiva@xxxxxxx>
- To: <programmingblind@xxxxxxxxxxxxx>
- Date: Mon, 29 Nov 2010 23:14:24 -0700
I am making a GUI application with an array the has 10 components. The
components represent an apartment suite. The application asks the user how many
occupance are in each apartment.
I made two button handler classes. Here is the code for class ButtonHandler.
import java.awt.event.*;
import javax.swing.*;
public class ButtonHandler implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
GuiApartment.apartment_size[GuiApartment.index] =
Integer.parseInt(GuiApartment.inputField);
}
}
Here is the code for class ButtonHandler1
import java.awt.event.*;
import javax.swing.*;
public class ButtonHandler1 implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
for (GuiApartment.index = 0, GuiApartment.index <=
GuiApartment.apartment_size.length, GuiApartment.index++)
{
GuiApartment.apartment_occupance =
GuiApartment.apartment_size[GuiApartment.index];
}
GuiApartment.occupance = GuiApartment.occupance +
GuiApartment.apartment_occupance;
GuiApartment.userPane.add(GuiApartment.occupance);
GuiApartment.apartment_average = GuiApartment.apartment_occupance /
GuiApartment.apartment_size.length;
GuiApartment.average = GuiApartment.average + GuiApartment.apartment_average;
GuiApartment.userPane.add(GuiApartment.average);
for (GuiApartment.index = GuiApartment.apartment_size.length - 1 &&
GuiApartment.above_average = 0, GuiApartment.apartment_size >
GuiApartment.apartment_average, GuiApartment.index--)
{
if (GuiApartment.apartment_size[GuiApartment.index] >
GuiApartment.apartment_average)
GuiApartment.above_average++;
}
GuiApartment.aboveAverage = GuiApartment.aboveAverage +
GuiApartment.above_average;
GuiApartment.userPane.add(GuiApartment.aboveAverage);
for (GuiApartment.index = 0 && GuiApartment.below_average = 0,
GuiApartment.apartment_size < GuiApartment.apartment_average,
GuiApartment.index++)
{
if (GuiApartment.apartment_size[GuiApartment.index] <
GuiApartment.apartment_average)
GuiApartment.below_average++;
}
GuiApartment.belowAverage = GuiApartment.belowAverage +
GuiApartment.below_average;
GuiApartment.userPane.add(GuiApartment.belowAverage);
GuiApartment.userPane.remove(quit);
GuiApartment.userFrame.setVisible(true);
}
} // End of ButtonHandler1
Here is the code for the driver class GuiApartment
import java.util.Scanner; // Imports class Scanner
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class GuiApartment
{
// Field declarations
static int apartment_occupance = 0; // Number of occupance in apartment
// declare and instantiate array of apartments
static int apartment_size[] = new int[10];
static int index = 0; // Index of array
static int average_size; // Average occupance in building
static int above_average; // Number of apartments with above average occupance
static int below_average; // Number of apartments with below average occupance
// Declare labels and text field
static JLabel head1 = new JLabel("Prompt", JLabel.CENTER);
static JLabel head2 = new JLabel("Input field", JLabel.CENTER);
static JLabel head3 = new JLabel("Occupance in apartment", JLabel.CENTER);
static JLabel occupance = new JLabel("Number of people in the building is: ",
JLabel.LEFT);
static JLabel average = new JLabel("Average number of people in building is: ",
JLabel.LEFT);
static JLabel aboveAverage = new JLabel("Number of apartments with above
average number of occupance is: ", JLabel.LEFT);
static JLabel belowAverage = new JLabel("Number of apartments with below
average number of occupance is: ", JLabel.LEFT);
static JTextField inputField = new JTextField(2);
// Declare buttons
static JButton store = new JButton("Store");
static JButton quit = new JButton("Quit");
public static void main(String[] args)
{
JFrame userFrame = new JFrame();
userFrame.setSize(200, 100);
userFrame.setLocation(100, 200);
Container userPane = userFrame.getContentPane();
userPane.setLayout(new GridLayout(4, 2));
userPane.add(head1);
userPane.add(head2);
for (index = 0, index <= apartment_size.length, index++)
{
userPane.add(head3);
userPane.add(inputField);
store.addActionListener(new ButtonHandler());
userPane.add(store);
}
quit.addActionListener(new ButtonHandler1());
userPane.add(quit);
}
}
Here are the error messages when I try to compile everything.
C:\Users\user\Desktop\COMP268\Practice\GuiApartment\src>javac *.java
ButtonHandler1.java:8: not a statement
for (GuiApartment.index = 0, GuiApartment.index <= GuiApartment.apartmen
t_size.length, GuiApartment.index++)
^
ButtonHandler1.java:8: ';' expected
for (GuiApartment.index = 0, GuiApartment.index <= GuiApartment.apartmen
t_size.length, GuiApartment.index++)
^
ButtonHandler1.java:15: ')' expected
GuiApartment.apartment_average = GuiApartment.apartment_occupance / GuiApartment
.apartment_size.length;
^
ButtonHandler1.java:19: not a statement
for (GuiApartment.index = GuiApartment.apartment_size.length - 1 && GuiApartment
.above_average = 0, GuiApartment.apartment_size > GuiApartment.apartment_average
, GuiApartment.index--)
^
ButtonHandler1.java:19: ';' expected
for (GuiApartment.index = GuiApartment.apartment_size.length - 1 && GuiApartment
.above_average = 0, GuiApartment.apartment_size > GuiApartment.apartment_average
, GuiApartment.index--)
^
ButtonHandler1.java:28: illegal start of expression
for (GuiApartment.index = 0 && GuiApartment.below_average = 0, GuiApartment.apar
tment_size < GuiApartment.apartment_average, GuiApartment.index++)
^
ButtonHandler1.java:34: ')' expected
GuiApartment.belowAverage = GuiApartment.belowAverage + GuiApartment.below_avera
ge;
^
GuiApartment.java:43: not a statement
for (index = 0, index <= apartment_size.length, index++)
^
GuiApartment.java:43: ';' expected
for (index = 0, index <= apartment_size.length, index++)
^
GuiApartment.java:53: illegal start of expression
}
^
10 errors
C:\Users\user\Desktop\COMP268\Practice\GuiApartment\src>
Can someone help me with this issue? What am I doing wrong.
Gilbert Neiva
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