可能重复：
GridBagLayout 中的对齐问题
请看下面的代码
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TestForm extends JFrame
{
private JLabel firstLabel, secondLabel, thirdLabel, fourthLabel, fifthLabel;
private JTextField firstTxt, secondTxt, thirdTxt, fourthTxt, fifthTxt;
private JPanel centerPanel;
private JPanel southPanel;
private JLabel comboLabel;
private JComboBox percentageCombo;
private JLabel endTargetLabel;
private JLabel mustLoseLabel;
private GridBagLayout mainLayout = new GridBagLayout();
private GridBagConstraints mainCons = new GridBagConstraints();
public TestForm()
{
//Declaring instance variables
firstLabel = new JLabel("First: ");
secondLabel = new JLabel("Second: ");
thirdLabel = new JLabel("Third: ");
fourthLabel = new JLabel("Fourth: ");
fifthLabel = new JLabel("Fifth: ");
comboLabel = new JLabel("Select System Performance: ");
firstTxt = new JTextField(7);
secondTxt = new JTextField(7);
thirdTxt = new JTextField(7);
fourthTxt = new JTextField(7);
fifthTxt = new JTextField(7);
endTargetLabel = new JLabel("Your End Target Performance is: ");
mustLoseLabel = new JLabel("Sammple Performance You Must Lose: ");
percentageCombo = new JComboBox();
percentageCombo.addItem("No Value is Set");
this.setLayout(mainLayout);
mainCons.gridy = 1;
mainCons.gridx = 1;
mainCons.anchor = GridBagConstraints.NORTH;
this.add(createNorthPanel(),mainCons);
mainCons.anchor = GridBagConstraints.WEST;
mainCons.gridy = 2;
mainCons.gridx = 1;
mainCons.anchor = GridBagConstraints.CENTER;
mainCons.insets = new Insets(15,0,0,0);
this.add(createCenterPanel(),mainCons);
mainCons.anchor = GridBagConstraints.SOUTH;
mainCons.gridy = 3;
mainCons.gridx = 1;
this.add(createSouthPanel(),mainCons);
this.setTitle("The Test Form");
this.pack();
this.setLocationRelativeTo(null);
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
private JPanel createNorthPanel()
{
JPanel northPanel = new JPanel();
northPanel = new JPanel();
northPanel.setLayout(new FlowLayout());
JLabel logoLabel = new JLabel();
logoLabel.setIcon(new ImageIcon(getClass().getResource("/images/TESTING-LOGO.gif")));
northPanel.add(logoLabel);
return northPanel;
}
private JPanel createCenterPanel()
{
centerPanel = new JPanel();
GridBagLayout gbl = new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();
centerPanel.setLayout(gbl);
gbc.gridx = 1;
gbc.gridy = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,0,0,0);
centerPanel.add(firstLabel,gbc);
gbc.gridx = 2;
gbc.gridy = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,0,0,0);
centerPanel.add(firstTxt,gbc);
gbc.gridx = 3;
gbc.gridy = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,10,0,0);
centerPanel.add(secondLabel,gbc);
gbc.gridx = 4;
gbc.gridy = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,-10,0,0);
centerPanel.add(secondTxt,gbc);
gbc.gridx = 1;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,0,0,0);
centerPanel.add(thirdLabel,gbc);
gbc.gridx = 2;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,0,0,0);
centerPanel.add(thirdTxt,gbc);
gbc.gridx = 3;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,10,0,0);
centerPanel.add(fourthLabel,gbc);
gbc.gridx = 4;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,-10,0,0);
centerPanel.add(fourthTxt,gbc);
gbc.gridx = 5;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,7,0,0);
centerPanel.add(fifthLabel,gbc);
gbc.gridx = 6;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,5,0,0);
centerPanel.add(fifthTxt,gbc);
centerPanel.setBorder(BorderFactory.createTitledBorder("The Testing Form"));
centerPanel.validate();
return centerPanel;
}
private JPanel createSouthPanel()
{
southPanel = new JPanel();
GridBagLayout gbl = new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();
southPanel.setLayout(gbl);
gbc.gridx = 1;
gbc.gridy = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,0,0,0);
southPanel.add(comboLabel,gbc);
gbc.gridx = 2;
gbc.gridy = 1;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(15,5,0,0);
southPanel.add(percentageCombo,gbc);
gbc.gridx = 1;
gbc.gridy = 2;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(10,0,0,0);
southPanel.add(endTargetLabel,gbc);
gbc.gridx = 1;
gbc.gridy = 3;
gbc.fill = GridBagConstraints.BOTH;
gbc.insets = new Insets(10,0,0,0);
southPanel.add(mustLoseLabel,gbc);
southPanel.setBorder(BorderFactory.createTitledBorder("See Your End Target "));
return southPanel;
}
public static void main(String[]args)
{
try
{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
new TestForm();
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
这是我使用此代码时得到的
但是，我需要以下
- southPanel 和 centerPanel 都应该出现在一条垂直线上。在这里，southPanel 与 centerPanel 不在同一行，它更靠右对齐
- 两个面板都应该向左移动一点（如图所示）
- 两个面板应具有相同的大小
- 面板尺寸太小。它们应该比现在大一点，同时不改变其组件的空间和对齐方式。
如果您知道至少一个问题的答案，请提供帮助。我也附上徽标。
注意：从代码中删除更多元素不会产生原始问题。这就是为什么这段代码有点大。
