Question

How to place components in layout on specific position.
Like I want to place 2 text boxes in first row, below 3 combo boxes.

But when I am trying to put they all appear in one line and I have used flowlayout. I have used the border as well. When I am resizing, the window sizes of the components are going out from border.

Can you suggest me some layouts to use and how to use it?

Here is my code :

topPanel=new JPanel();
topPanel.setLayout(new FlowLayout());
topPanel.setBorder(new TitledBorder(new EtchedBorder(), "Customer Data"));

CNameTextField = new JTextField (20); // create the Customer Name text field
CNameTextField.setEditable(true);     // set editable text box

CIDLabel=new JLabel("Customer ID");

C_IDTextField = new JTextField (10);
C_IDTextField.setEditable(true);      // set editable text box

topPanel.add(CNameTextField);
topPanel.add(C_IDTextField);   

// Create and populate Room type combo box
roomTypeCombo = new JComboBox();
roomTypeCombo.addItem( "Budget($50)" );    

// Create and populate Meal type combo box
mealCombo = new JComboBox();
mealCombo.addItem( "None" );       

// Create and populate Days combo box

daysCombo = new JComboBox();

for(int i=0;i<31 ; i++) {
            // populate combobox with days
    daysCombo.addItem(i); 
}
    // Adding  rest of the components to top panel
topPanel.add(roomTypeCombo);
topPanel.add(mealCombo);
topPanel.add(daysCombo);

Thanks.

Answer 1

Try to change the layout.
http://docs.oracle.com/javase/tutorial/uiswing/layout/using.html

You could go for a GridLayout with two lines (for example, there is some others possible combinations), with each line containing respectively 3 JComboBoxs, and two JTextFields.

Look carefully at the documentation and check out some examples easily reachable on the web.

import java.awt.GridLayout;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class SwingResizeJFrame {

    public SwingResizeJFrame() {
        JTextField TextField1 = new JTextField("firstTextField");
        JTextField TextField2 = new JTextField("secondTextField");
        JPanel firstPanel = new JPanel();
        firstPanel.setLayout(new GridLayout(0, 2, 10, 10));
        firstPanel.add(TextField1);
        firstPanel.add(TextField2);

        JComboBox comboBox1 = new JComboBox(new Object[]{"Ester", "Jordi", "Jordina", "Jorge", "Sergi"});
        JComboBox comboBox2 = new JComboBox(new Object[]{"Ester", "Jordi", "Jordina", "Jorge", "Sergi"});
        JComboBox comboBox3 = new JComboBox(new Object[]{"Ester", "Jordi", "Jordina", "Jorge", "Sergi"});
        JPanel secondPanel = new JPanel();
        secondPanel.setLayout(new GridLayout(0, 3, 10, 10));
        secondPanel.add(comboBox1);
        secondPanel.add(comboBox2);
        secondPanel.add(comboBox3);

        JFrame frame = new JFrame();
        frame.setLayout(new GridLayout(2, 1, 10, 10));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(firstPanel);
        frame.add(secondPanel);
        frame.pack();
        frame.setLocation(150, 150);
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        java.awt.EventQueue.invokeLater(new Runnable() {

            public void run() {
                SwingResizeJFrame demo = new SwingResizeJFrame();
            }
        });
    }
}