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

Comments
easiest is JTable, Gridlayout +1

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?

Edited 5 Years Ago by yt0729: n/a

don't mix Java AWT Components with Swing JCompoents, since that were official allowed here and here, but I still to think that that would be just the road to the hell

Label would be JLabel

Panel would be JPanel

Edited 5 Years Ago by mKorbel: n/a

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

This article has been dead for over six months. Start a new discussion instead.