I am doing several choice box in JFrame.But i have some problems.Can anyone help me.
1)Currently doing a loop to add no1 until 50 into choice box.But it doesn't work.
int [] number = new int[50];
for(int i=0;i<50;i++)
{
number[i] = i;
for(int i = 0;i<50;i++)
{
c1.add(number[i]);
}2)I am doing several choice box, but then all in one row.How can i make it row by row?
But it doesn't work.
Please explain what happens.
How can i make it row by row?
Use a layout manager that will do that. Perhaps the GridLayout
What is a "choice box"?
Do you mean a JComboBox?
If so, try...
int Choice_Count = 10;
String Choices [] = new String [Choice_Count];
for (int I = 0; I < Choice_Count; I++)
Choices [I] = Integer.toString (I + 1); // This will give me 1-10 instead of 0-9
JComboBox Choice_ComboBox = new JComboBox (Choices);@hfx642
Choise is pre-dinosaurus form of JComboBox that comning from Java AWT and silently died in the last centaury
What is a "choice box"?
Do you mean a JComboBox?
If so, try...int Choice_Count = 10; String Choices [] = new String [Choice_Count]; for (int I = 0; I < Choice_Count; I++) Choices [I] = Integer.toString (I + 1); // This will give me 1-10 instead of 0-9 JComboBox Choice_ComboBox = new JComboBox (Choices);
Thanks for your reply:)this is wat i want.
Please explain what happens.
Use a layout manager that will do that. Perhaps the GridLayout
Thanks, Layout manager work:)
Thanks, Layout manager work:)
import java.awt.event.*;
import java.awt.*; //for graphics
import java.util.*;
import java.text.*; // for decimal
import java.applet.*;
import javax.swing.*;
public class bill extends JFrame
{
public bill()
{
super("Receipt");
Container a = getContentPane();
a.setLayout(new GridLayout(5,1,10,5));
Label L1 = new Label("Receipt Restaurant ABC");
Font f1 = new Font("TimesNewRoman",Font.BOLD,40);
L1.setFont(f1);
L1.setForeground(Color.blue);
L1.setAlignment(Label.CENTER);
a.add(L1,"North");
Label L4 = new Label();
Font f3 = new Font("ARIEL",Font.BOLD,13);
L4.setFont(f3);
L4.setForeground(Color.black);
L4.setText("Date: " + new Date());
a.add(L4);
Panel p = new Panel(new GridLayout(3,2,10,5));
//Panel p2 = new Panel(new GridLayout(1,1));
p.setBackground(Color.pink);
//p2.setBackground(Color.yellow);
a.add(p,"Center");
Label L5 = new Label("Reciept No:");
L5.setFont(f3);
L5.setForeground(Color.black);
p.add(L5);
Label L6 = new Label();
L6.setFont(f3);
L6.setForeground(Color.black);
L6.setText("1123");
p.add(L6);
Label L2 = new Label("Table No:");
Font f2 = new Font("ARIEL",Font.BOLD,13);
L2.setFont(f2);
L2.setForeground(Color.black);
p.add(L2);
int Choice_Count = 50;
String Choices [] = new String [Choice_Count];
for (int I = 0; I < Choice_Count; I++)
Choices [I] = Integer.toString (I + 1);
JComboBox Choice_ComboBox = new JComboBox (Choices);
p.add(Choice_ComboBox);
System.out.println();
Label L3 = new Label("Staff In Charged:");
L3.setFont(f2);
L3.setForeground(Color.black);
p.add(L3);
//p2.add(L3);
//a.add(p2);
String name[] = {"Amy","Wendy","Angel"};
JComboBox Choice_ComboBox2 = new JComboBox (name);
p.add(Choice_ComboBox2);
String[] columnNames = {"No", "Items"};
Object[][] cellData = {{"1)", "row1-col2"},{"2)", "row2-col2"}};
JTable table = new JTable(cellData, columnNames);
a.add(table);
TableColumn column = null; //Error here: Cannot find the symbol
for (int i = 0; i <= 1; i++)
{
column = table.getColumnModel().getColumn(i);
if (i == 1)
{
column.setPreferredWidth(100); //third column is bigger
}
else
{
column.setPreferredWidth(50);
}
}
/*table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
int vColIndex = 0;
TableColumn col = table.getColumnModel().getColumn(vColIndex);
int width = 100;
col.setPreferredWidth(width);*/
setSize(500,500);
show();
}
public static void main(String a[])
{
bill application = new bill();
application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
};
}When the JFrame window open, the table do appears, but then i cant see the column name, can anyone explain to me why?
I have error in this line,TableColumn column = null;
Can i know why?
you have to learn how to LayoutManager works, good idea with correct direction, just check that
import java.awt.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.TableColumn;
public class Bill extends JFrame {
private static final long serialVersionUID = 1L;
public Bill() {
super("Receipt");
JLabel L1 = new JLabel("Receipt Restaurant ABC");
Font f1 = new Font("TimesNewRoman", Font.BOLD, 40);
L1.setFont(f1);
L1.setForeground(Color.blue);
L1.setHorizontalAlignment(JLabel.CENTER);
JLabel L4 = new JLabel();
Font f3 = new Font("ARIEL", Font.BOLD, 13);
L4.setFont(f3);
L4.setForeground(Color.black);
L4.setText("Date: " + new Date());
JPanel p = new JPanel(new GridLayout(3, 2, 10, 5));
//JPanel p2 = new JPanel(new GridLayout(1,1));
p.setBackground(Color.pink);
//p2.setBackground(Color.yellow);
JLabel L5 = new JLabel("Reciept No:");
L5.setFont(f3);
L5.setForeground(Color.black);
p.add(L5);
JLabel L6 = new JLabel();
L6.setFont(f3);
L6.setForeground(Color.black);
L6.setText("1123");
p.add(L6);
JLabel L2 = new JLabel("Table No:");
Font f2 = new Font("ARIEL", Font.BOLD, 13);
L2.setFont(f2);
L2.setForeground(Color.black);
p.add(L2);
int Choice_Count = 50;
String Choices[] = new String[Choice_Count];
for (int I = 0; I < Choice_Count; I++) {
Choices[I] = Integer.toString(I + 1);
}
JComboBox Choice_ComboBox = new JComboBox(Choices);
p.add(Choice_ComboBox);
System.out.println();
JLabel L3 = new JLabel("Staff In Charged:");
L3.setFont(f2);
L3.setForeground(Color.black);
p.add(L3);
//p2.add(L3);
//a.add(p2);
String name[] = {"Amy", "Wendy", "Angel"};
JComboBox Choice_ComboBox2 = new JComboBox(name);
p.add(Choice_ComboBox2);
String[] columnNames = {"No", "Items"};
Object[][] cellData = {{"1)", "row1-col2"}, {"2)", "row2-col2"}};
JTable table = new JTable(cellData, columnNames);
TableColumn column;
for (int i = 0; i <= 1; i++) {
column = table.getColumnModel().getColumn(i);
if (i == 1) {
column.setPreferredWidth(100); //third column is bigger
} else {
column.setPreferredWidth(50);
}
}
setLayout(new GridLayout(5, 1, 10, 5));
add(L1, "North");
add(L4);
add(p, "Center");
add(table);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(500, 500);
setVisible(true);
}
public static void main(String a[]) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
Bill application = new Bill();;
}
});
}
}you have to learn how to LayoutManager works, good idea with correct direction, just check that
import java.awt.*; import java.util.*; import javax.swing.*; import javax.swing.table.TableColumn; public class Bill extends JFrame { private static final long serialVersionUID = 1L; public Bill() { super("Receipt"); JLabel L1 = new JLabel("Receipt Restaurant ABC"); Font f1 = new Font("TimesNewRoman", Font.BOLD, 40); L1.setFont(f1); L1.setForeground(Color.blue); L1.setHorizontalAlignment(JLabel.CENTER); JLabel L4 = new JLabel(); Font f3 = new Font("ARIEL", Font.BOLD, 13); L4.setFont(f3); L4.setForeground(Color.black); L4.setText("Date: " + new Date()); JPanel p = new JPanel(new GridLayout(3, 2, 10, 5)); //JPanel p2 = new JPanel(new GridLayout(1,1)); p.setBackground(Color.pink); //p2.setBackground(Color.yellow); JLabel L5 = new JLabel("Reciept No:"); L5.setFont(f3); L5.setForeground(Color.black); p.add(L5); JLabel L6 = new JLabel(); L6.setFont(f3); L6.setForeground(Color.black); L6.setText("1123"); p.add(L6); JLabel L2 = new JLabel("Table No:"); Font f2 = new Font("ARIEL", Font.BOLD, 13); L2.setFont(f2); L2.setForeground(Color.black); p.add(L2); int Choice_Count = 50; String Choices[] = new String[Choice_Count]; for (int I = 0; I < Choice_Count; I++) { Choices[I] = Integer.toString(I + 1); } JComboBox Choice_ComboBox = new JComboBox(Choices); p.add(Choice_ComboBox); System.out.println(); JLabel L3 = new JLabel("Staff In Charged:"); L3.setFont(f2); L3.setForeground(Color.black); p.add(L3); //p2.add(L3); //a.add(p2); String name[] = {"Amy", "Wendy", "Angel"}; JComboBox Choice_ComboBox2 = new JComboBox(name); p.add(Choice_ComboBox2); String[] columnNames = {"No", "Items"}; Object[][] cellData = {{"1)", "row1-col2"}, {"2)", "row2-col2"}}; JTable table = new JTable(cellData, columnNames); TableColumn column; for (int i = 0; i <= 1; i++) { column = table.getColumnModel().getColumn(i); if (i == 1) { column.setPreferredWidth(100); //third column is bigger } else { column.setPreferredWidth(50); } } setLayout(new GridLayout(5, 1, 10, 5)); add(L1, "North"); add(L4); add(p, "Center"); add(table); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setSize(500, 500); setVisible(true); } public static void main(String a[]) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { Bill application = new Bill();; } }); } }
I appreciate your reply:) but cant run your code, error said filename error.
no idea about your side effect File Error,
code that you post and my minor changes are pretty runnable and compilable
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