CODEWITHSUNDEEP
javaswinglayout-managergridbaglayout
Apurva Patil
Apurva Patil

Reputation: 1019

laying out components in GridBagLayout not as expected

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;

public class GridBagLayoutDemo extends JFrame
{
private JFrame frame;
private JPanel panel;
private JLabel l1,l2,l3,l4,l5,l6,l7,l8;
private JRadioButton r1,r2,r3,r4,r5,r6,r7,r8;
private JTextField t1,t2,t3,t4;
private JComboBox c1;
GridBagConstraints gbc;
GridBagLayout  gbl;


public static void main(String[] args)
{
    new GridBagLayoutDemo();
}

public GridBagLayoutDemo()
{
    frame=new JFrame();
    panel=new JPanel();
    panel.setBackground(Color.YELLOW);
    gbl   = new GridBagLayout();  

    gbc = new GridBagConstraints(); 

    panel.setLayout(gbl);

    l1=new JLabel("passport");
    gbc.anchor = gbc.EAST;  
    gbc.gridx=0;
    gbc.gridy=0;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    //gbc.weightx=1.0;
    panel.add(l1,gbc);

    l2=new JLabel("pass no.");
    gbc.gridx=0;
    gbc.gridy=1;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(l2,gbc);


    l3=new JLabel("Valid Upto");
    gbc.gridx=0;
    gbc.gridy=2;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(l3,gbc);

    l4=new JLabel("Identification");
    gbc.gridx=0;
    gbc.gridy=3;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(l4,gbc);

    l5=new JLabel("NO.");
    gbc.gridx=0;
    gbc.gridy=4;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(l5,gbc);

    l6=new JLabel("Marital Status");
    gbc.gridx=0;
    gbc.gridy=5;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(l6,gbc);

    l7=new JLabel("Nationality");
    gbc.gridx=0;
    gbc.gridy=6;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(l7,gbc);

    l8=new JLabel("Type of Position");
    gbc.gridx=0;
    gbc.gridy=7;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(l8,gbc);

    r1=new JRadioButton("Yes");
    gbc.gridx=2;
    gbc.gridy=0;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(r1,gbc);

    r2=new JRadioButton("No");
    gbc.gridx=4;
    gbc.gridy=0;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(r2,gbc);

    r3=new JRadioButton("Married");
    gbc.gridx=2;
    gbc.gridy=5;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(r3,gbc);

    r4=new JRadioButton("Unmarried");
    gbc.gridx=4;
    gbc.gridy=5;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(r4,gbc);

    r5=new JRadioButton("Full time");
    gbc.gridx=2;
    gbc.gridy=7;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(r5,gbc);

    r6=new JRadioButton("Part Time");
    gbc.gridx=3;
    gbc.gridy=7;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(r6,gbc);

    r7=new JRadioButton("Contract Basis");
    gbc.gridx=4;
    gbc.gridy=7;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(r7,gbc);

    r8=new JRadioButton("Intern");
    gbc.gridx=2;
    gbc.gridy=8;
    gbc.gridwidth=1;
    gbc.gridheight=1;
    panel.add(r8,gbc);


    t1=new JTextField();
    gbc.gridx=2;
    gbc.gridy=1;
    gbc.gridwidth=3;
    gbc.gridheight=1;
    panel.add(t1,gbc);

    t2=new JTextField();
    gbc.gridx=2;
    gbc.gridy=2;
    gbc.gridwidth=3;
    gbc.gridheight=1;
    panel.add(t2,gbc);

    t3=new JTextField();
    gbc.gridx=2;
    gbc.gridy=4;
    gbc.gridwidth=3;
    gbc.gridheight=1;
    panel.add(t3,gbc);

    t4=new JTextField();
    gbc.gridx=2;
    gbc.gridy=6;
    gbc.gridwidth=3;
    gbc.gridheight=1;
    panel.add(t4,gbc);





    frame.add(panel);

    frame.setVisible(true);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    //frame.setSize(300,200);
    frame.pack();

    //c1=new JComboBox();
    //frame1();


}
}

In this I have added a few labels,radio buttons,textfields.The radio buttons and labels are getting displayed as I want them but the text fields are not getting displayed properly. Can anyone tell me how to get the text fields to cover more space?

This is how the gui is displayed

Upvotes: 0

Views: 462

Answers (2)

Guillaume Polet
Guillaume Polet

Reputation: 47608

You should probably consider setting the two following values on your constraints for the textfields:

GridBagConstraints.fill = GridBagConstraints.HORIZONTAL;
GridBagConstraints.weightx = 1.0;// If there is extra room horizontally, the textfields will receive it

Upvotes: 2

Hovercraft Full Of Eels
Hovercraft Full Of Eels

Reputation: 285405

Since your JTextFields do not have their column size properties set, their preferredSize will be quite small. Consider giving your JTextFields default column size:

public class GridBagLayoutDemo extends JFrame {
   private static final int TF_COLS = 10;

   // ....

   public GridBagLayoutDemo() {
      t1 = new JTextField(TF_COLS);
      t2 = new JTextField(TF_COLS);
      t3 = new JTextField(TF_COLS);
      t4 = new JTextField(TF_COLS);
      // ....

Upvotes: 2

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