How to Scatter JComboBox ?

Question

Hi, i am working on a simple example to learn the Swing API. I have a small program that uses 6 different combo boxes. there should be 2 sets of 3 Combo boxes (day, month, year). My problem is that I cannot seem to get them to seperate. They always line up right next to each other. I posted some code below. sorry the tabbing is a bit screwy. if you paste it to an editor it will make more sense. anyways, i use 2 different jpanels, with a GridLayout of only one column (inserting Jpanels into a gridlayout of only 1 column), but still it aligns them together on the same line! i can't figure it out. any help will be appreciated. thanks
ps-you should be able to just cut and paste this code and compile if you want to see what i mean.
import javax.swing.*;
import java.awt.*;
import java.lang.*;
public class DateFinder {
     public static void main(String[] args) {
          JFrame           myFrame           = new JFrame("How many days since your birthday?");
          Container      myContentPane      = myFrame.getContentPane();
          JPanel           buttonPanel      = new JPanel(new GridLayout(1,2));
          JPanel          comboPanel          = new JPanel(new GridLayout(1,4));
          JPanel          comboPanel1          = new JPanel(new GridLayout(1,4));
          JPanel          rootPanel          = new JPanel(new GridLayout(8,1));
          JButton      Calculate           = new JButton("Calculate");
          JButton          Reset               = new JButton("Reset");
          JLabel          yourBday          = new JLabel("Your Birthday");
          JLabel          Today               = new JLabel("Today");
          int           yearCounter          = 0;
          int           i;
          String[]     DaysList          = {"1","2","3","4","5","6","7","8","9","10",
                                             "11","12","13","14","15","16","17","18",
                                             "19","20","21","22","23","24","25","26",
                                             "27","28","29","30","31"};
          String[]     MonthsList          = {"January","February","March","April","May",
                                             "June","July","August","September","October",
                                             "November","December"};
          String[] YearsList = new String[120];
          for(i=0;i<120;i++) {
               YearsList[i] = String.valueOf(2005 - i);
          }//end for
JComboBox DaysCombo     = new JComboBox(DaysList);
JComboBox MonthsCombo     = new JComboBox(MonthsList);
JComboBox YearsCombo     = new JComboBox(YearsList);
JComboBox DaysCombo1     = new JComboBox(DaysList);
JComboBox MonthsCombo1= new JComboBox(MonthsList);
JComboBox YearsCombo1     = new JComboBox(YearsList);
          buttonPanel.add(Calculate);
          buttonPanel.add(Reset);
          comboPanel.add(yourBday);
          comboPanel.add(DaysCombo);
          comboPanel.add(MonthsCombo);
          comboPanel.add(YearsCombo);
          comboPanel1.add(Today);
          comboPanel1.add(DaysCombo1);
          comboPanel1.add(MonthsCombo1);
          comboPanel1.add(YearsCombo1);
          rootPanel.add(comboPanel);
          rootPanel.add(comboPanel1);
          rootPanel.add(buttonPanel);
          comboPanel.add(DaysCombo1);
          comboPanel.add(MonthsCombo1);
          comboPanel.add(YearsCombo1);
          myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          myContentPane.add(rootPanel);
          //myContentPane.add(buttonPanel, BorderLayout.SOUTH);
          //myContentPane.add(comboPanel, BorderLayout.EAST);
          //myContentPane.add(comboPanel1,BorderLayout.NORTH);
          myFrame.setSize(500,200);
          myFrame.setVisible(true);
     }//end main
}//end class definition

Answer 1

OK.. I guess I now understood your problem and debugged ur code...
You have three lines of unnecessary code. (Repeated twice).
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class Temp {
     public static void main(String[] args) {
          JFrame myFrame = new JFrame("How many days since your birthday?");
          Container myContentPane = myFrame.getContentPane();
          JPanel buttonPanel = new JPanel(new GridLayout(1, 2));
          JPanel comboPanel = new JPanel(new GridLayout(1, 4));
          JPanel comboPanel1 = new JPanel(new GridLayout(1, 4));
          JPanel rootPanel = new JPanel(new GridLayout(3, 1));
          JButton Calculate = new JButton("Calculate");
          JButton Reset = new JButton("Reset");
          JLabel yourBday = new JLabel("Your Birthday");
          JLabel Today = new JLabel("Today");
          int yearCounter = 0;
          int i;
          String[] DaysList =
                    "1",
                    "2",
                    "3",
                    "4",
                    "5",
                    "6",
                    "7",
                    "8",
                    "9",
                    "10",
                    "11",
                    "12",
                    "13",
                    "14",
                    "15",
                    "16",
                    "17",
                    "18",
                    "19",
                    "20",
                    "21",
                    "22",
                    "23",
                    "24",
                    "25",
                    "26",
                    "27",
                    "28",
                    "29",
                    "30",
                    "31" };
          String[] MonthsList =
                    "January",
                    "February",
                    "March",
                    "April",
                    "May",
                    "June",
                    "July",
                    "August",
                    "September",
                    "October",
                    "November",
                    "December" };
          String[] YearsList = new String[120];
          for (i = 0; i < 120; i++) {
               YearsList = String.valueOf(2005 - i);
          } //end for
          JComboBox DaysCombo = new JComboBox(DaysList);
          JComboBox MonthsCombo = new JComboBox(MonthsList);
          JComboBox YearsCombo = new JComboBox(YearsList);
          JComboBox DaysCombo1 = new JComboBox(DaysList);
          JComboBox MonthsCombo1 = new JComboBox(MonthsList);
          JComboBox YearsCombo1 = new JComboBox(YearsList);
          buttonPanel.add(Calculate);
          buttonPanel.add(Reset);
          comboPanel.add(yourBday);
          comboPanel.add(DaysCombo);
          comboPanel.add(MonthsCombo);
          comboPanel.add(YearsCombo);
          comboPanel1.add(Today);
          comboPanel1.add(DaysCombo1);
          comboPanel1.add(MonthsCombo1);
          comboPanel1.add(YearsCombo1);
          rootPanel.add(comboPanel);
          rootPanel.add(comboPanel1);
          rootPanel.add(buttonPanel);
          //YOU DO NOT NEED THE FOLLOWING THREE LINES.
//          comboPanel.add(DaysCombo1);
//          comboPanel.add(MonthsCombo1);
//          comboPanel.add(YearsCombo1);
          myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          myContentPane.add(rootPanel, BorderLayout.CENTER);
          //myContentPane.add(buttonPanel, BorderLayout.SOUTH);
          //myContentPane.add(comboPanel, BorderLayout.EAST);
          //myContentPane.add(comboPanel1,BorderLayout.NORTH);
          myFrame.setSize(500, 200);
          myFrame.setVisible(true);
     } //end main
} //end class definition
Run this progam and I guess you will see what you have been wanting to.
Sai Pullabhotla.