Auslegen Komponenten in GridBagLayout nicht als

Question

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 dieser erwartete ich ein paar Labels hinzugefügt haben, Radiobuttons, sind textfields.The Radio-Buttons und Labels angezeigt bekommen, wie ich sie will, aber die Textfelder nicht richtig angezeigt zu werden. Kann mir jemand sagen, wie man die Textfelder bekommt, um mehr Platz zu schaffen?

Answer 1

Sie wahrscheinlich in Betracht ziehen sollten die beiden folgenden Werte auf Einschränkungen für die Textfelder einstellen:

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

Answer 2

Da Ihr JTextFields ihre Spaltengröße Eigenschaften nicht gesetzt haben, ihre preferredSize wird recht klein sein. Betrachten Sie Ihre JTextFields Standardspaltengröße zu geben:

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); 
     // ....