我正在创建一个简单的计算器GUI，我一直在使用netbeans IDE GUI构建器。我一直试图使GroupLayout代码的意义，不幸的是，我只是没有得到它。我想也许通过改变到GridBagLayout，它会更清楚，我将在一个更好的位置来理解代码。
下面是我的代码。谁能帮我把它改成GridBagLayout ?
public class CITCalculatorGUI extends javax.swing.JFrame {
/* Creates new frame CITCalculatorGUI */
public CITCalculatorGUI() {
initComponents();
}
/* This method is called from within the constructor to
* initialize the frame.
*/
private void initComponents() {
tempTextField = new javax.swing.JTextField();
sevenButton = new javax.swing.JButton();
eightButton = new javax.swing.JButton();
nineButton = new javax.swing.JButton();
fourButton = new javax.swing.JButton();
fiveButton = new javax.swing.JButton();
sixButton = new javax.swing.JButton();
oneButton = new javax.swing.JButton();
twoButton = new javax.swing.JButton();
threeButton = new javax.swing.JButton();
zeroButton = new javax.swing.JButton();
positiveNegativeToggle = new javax.swing.JButton();
decimalPoint = new javax.swing.JButton();
base16A = new javax.swing.JButton();
base16B = new javax.swing.JButton();
base16C = new javax.swing.JButton();
base16D = new javax.swing.JButton();
base16E = new javax.swing.JButton();
base16F = new javax.swing.JButton();
plusButton = new javax.swing.JButton();
minusButton = new javax.swing.JButton();
divisionButton = new javax.swing.JButton();
multiplication = new javax.swing.JButton();
andButton = new javax.swing.JButton();
orButton = new javax.swing.JButton();
xorButton = new javax.swing.JButton();
norButton = new javax.swing.JButton();
equalsButton = new javax.swing.JButton();
nandButton = new javax.swing.JButton();
makLogo = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("CIT Calculator");
sevenButton.setBackground(new java.awt.Color(0, 0, 255));
sevenButton.setForeground(new java.awt.Color(153, 153, 153));
sevenButton.setText("7");
eightButton.setBackground(new java.awt.Color(0, 0, 255));
eightButton.setForeground(new java.awt.Color(153, 153, 153));
eightButton.setText("8");
nineButton.setBackground(new java.awt.Color(0, 0, 255));
nineButton.setForeground(new java.awt.Color(153, 153, 153));
nineButton.setText("9");
fourButton.setBackground(new java.awt.Color(0, 0, 255));
fourButton.setForeground(new java.awt.Color(153, 153, 153));
fourButton.setText("4");
fiveButton.setBackground(new java.awt.Color(0, 0, 255));
fiveButton.setForeground(new java.awt.Color(153, 153, 153));
fiveButton.setText("5");
sixButton.setBackground(new java.awt.Color(0, 0, 255));
sixButton.setForeground(new java.awt.Color(153, 153, 153));
sixButton.setText("6");
oneButton.setBackground(new java.awt.Color(0, 0, 255));
oneButton.setForeground(new java.awt.Color(153, 153, 153));
oneButton.setText("1");
twoButton.setBackground(new java.awt.Color(0, 0, 255));
twoButton.setForeground(new java.awt.Color(153, 153, 153));
twoButton.setText("2");
threeButton.setBackground(new java.awt.Color(0, 0, 255));
threeButton.setForeground(new java.awt.Color(153, 153, 153));
threeButton.setText("3");
zeroButton.setBackground(new java.awt.Color(0, 0, 255));
zeroButton.setForeground(new java.awt.Color(153, 153, 153));
zeroButton.setText("0");
positiveNegativeToggle.setBackground(new java.awt.Color(0, 0, 255));
positiveNegativeToggle.setForeground(new java.awt.Color(153, 153, 153));
positiveNegativeToggle.setText("+/-");
decimalPoint.setBackground(new java.awt.Color(0, 0, 255));
decimalPoint.setForeground(new java.awt.Color(153, 153, 153));
decimalPoint.setText(".");
base16A.setBackground(new java.awt.Color(0, 0, 255));
base16A.setForeground(new java.awt.Color(153, 153, 153));
base16A.setText("A");
base16B.setBackground(new java.awt.Color(0, 0, 255));
base16B.setForeground(new java.awt.Color(153, 153, 153));
base16B.setText("B");
base16C.setBackground(new java.awt.Color(0, 0, 255));
base16C.setForeground(new java.awt.Color(153, 153, 153));
base16C.setText("C");
base16D.setBackground(new java.awt.Color(0, 0, 255));
base16D.setForeground(new java.awt.Color(153, 153, 153));
base16D.setText("D");
base16E.setBackground(new java.awt.Color(0, 0, 255));
base16E.setForeground(new java.awt.Color(153, 153, 153));
base16E.setText("E");
base16F.setBackground(new java.awt.Color(0, 0, 255));
base16F.setForeground(new java.awt.Color(153, 153, 153));
base16F.setText("F");
plusButton.setBackground(new java.awt.Color(51, 255, 0));
plusButton.setForeground(new java.awt.Color(153, 153, 153));
plusButton.setText("+");
minusButton.setBackground(new java.awt.Color(51, 255, 0));
minusButton.setForeground(new java.awt.Color(153, 153, 153));
minusButton.setText("-");
divisionButton.setBackground(new java.awt.Color(51, 255, 0));
divisionButton.setForeground(new java.awt.Color(153, 153, 153));
divisionButton.setText("/");
multiplication.setBackground(new java.awt.Color(51, 255, 0));
multiplication.setForeground(new java.awt.Color(153, 153, 153));
multiplication.setText("*");
andButton.setBackground(new java.awt.Color(51, 255, 0));
andButton.setForeground(new java.awt.Color(153, 153, 153));
andButton.setText("AND");
orButton.setBackground(new java.awt.Color(51, 255, 0));
orButton.setForeground(new java.awt.Color(153, 153, 153));
orButton.setText("OR");
xorButton.setBackground(new java.awt.Color(51, 255, 0));
xorButton.setForeground(new java.awt.Color(153, 153, 153));
xorButton.setText("XOR");
norButton.setBackground(new java.awt.Color(51, 255, 0));
norButton.setForeground(new java.awt.Color(153, 153, 153));
norButton.setText("NOR");
equalsButton.setBackground(new java.awt.Color(51, 255, 0));
equalsButton.setForeground(new java.awt.Color(153, 153, 153));
equalsButton.setText("=");
nandButton.setBackground(new java.awt.Color(51, 255, 0));
nandButton.setForeground(new java.awt.Color(153, 153, 153));
nandButton.setText("NAND");
makLogo.setIcon(new javax.swing.ImageIcon("C:\test\mak-logo.jpg"));
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);//sets the layout manager
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(tempTextField, javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(base16D, javax.swing.GroupLayout.Alignment.LEADING, 0, 0, Short.MAX_VALUE)
.addComponent(base16A, javax.swing.GroupLayout.Alignment.LEADING, 0, 0, Short.MAX_VALUE)
.addComponent(zeroButton, javax.swing.GroupLayout.Alignment.LEADING, 0, 0, Short.MAX_VALUE)
.addComponent(oneButton, javax.swing.GroupLayout.Alignment.LEADING, 0, 0, Short.MAX_VALUE)
.addComponent(fourButton, javax.swing.GroupLayout.Alignment.LEADING, 0, 0, Short.MAX_VALUE))
.addComponent(sevenButton, javax.swing.GroupLayout.DEFAULT_SIZE, 57, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(base16E, 0, 0, Short.MAX_VALUE)
.addComponent(base16B, 0, 0, Short.MAX_VALUE)
.addComponent(positiveNegativeToggle, 0, 0, Short.MAX_VALUE)
.addComponent(twoButton, 0, 0, Short.MAX_VALUE)
.addComponent(fiveButton, 0, 0, Short.MAX_VALUE)
.addComponent(eightButton, javax.swing.GroupLayout.DEFAULT_SIZE, 58, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(base16F, 0, 0, Short.MAX_VALUE)
.addComponent(base16C, 0, 0, Short.MAX_VALUE)
.addComponent(decimalPoint, 0, 0, Short.MAX_VALUE)
.addComponent(threeButton, 0, 0, Short.MAX_VALUE)
.addComponent(sixButton, 0, 0, Short.MAX_VALUE)
.addComponent(nineButton, javax.swing.GroupLayout.DEFAULT_SIZE, 58, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(multiplication, 0, 0, Short.MAX_VALUE)
.addComponent(xorButton, javax.swing.GroupLayout.PREFERRED_SIZE, 66, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(plusButton, javax.swing.GroupLayout.DEFAULT_SIZE, 58, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(norButton, 0, 0, Short.MAX_VALUE)
.addComponent(andButton, 0, 0, Short.MAX_VALUE)
.addComponent(minusButton, javax.swing.GroupLayout.DEFAULT_SIZE, 54, Short.MAX_VALUE)))
.addComponent(nandButton))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(equalsButton, 0, 0, Short.MAX_VALUE)
.addComponent(orButton, 0, 0, Short.MAX_VALUE)
.addComponent(divisionButton, javax.swing.GroupLayout.DEFAULT_SIZE, 57, Short.MAX_VALUE))))
.addComponent(makLogo))
.addContainerGap(23, Short.MAX_VALUE))
);
layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {base16A, base16B, base16C, base16D, base16E, base16F, decimalPoint, eightButton, fiveButton, fourButton, nineButton, oneButton, positiveNegativeToggle, sevenButton, sixButton, threeButton, twoButton, zeroButton});
layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {andButton, divisionButton, equalsButton, minusButton, multiplication, nandButton, norButton, orButton, plusButton, xorButton});
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(tempTextField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(eightButton)
.addComponent(sevenButton))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(fourButton)
.addComponent(fiveButton))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(oneButton)
.addComponent(twoButton))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(zeroButton)
.addComponent(positiveNegativeToggle))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(base16A)
.addComponent(base16B)))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(nineButton)
.addComponent(minusButton)
.addComponent(divisionButton)
.addComponent(plusButton))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(sixButton)
.addComponent(multiplication)
.addComponent(andButton)
.addComponent(orButton))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(threeButton)
.addComponent(xorButton)
.addComponent(norButton)
.addComponent(equalsButton))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(decimalPoint)
.addComponent(nandButton))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(base16C)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(base16D)
.addComponent(base16E)
.addComponent(base16F))
.addGap(28, 28, 28)
.addComponent(makLogo)
.addContainerGap(28, Short.MAX_VALUE))
);
pack();//pack method ensures the frame is at its preferred size
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new CITCalculatorGUI().setVisible(true);
}
});
}// this code ensures thread safety.
// Variables declaration
private javax.swing.JButton andButton;
private javax.swing.JButton base16A;
private javax.swing.JButton base16B;
private javax.swing.JButton base16C;
private javax.swing.JButton base16D;
private javax.swing.JButton base16E;
private javax.swing.JButton base16F;
private javax.swing.JButton decimalPoint;
private javax.swing.JButton divisionButton;
private javax.swing.JButton eightButton;
private javax.swing.JButton equalsButton;
private javax.swing.JButton fiveButton;
private javax.swing.JButton fourButton;
private javax.swing.JLabel makLogo;
private javax.swing.JButton minusButton;
private javax.swing.JButton multiplication;
private javax.swing.JButton nandButton;
private javax.swing.JButton nineButton;
private javax.swing.JButton norButton;
private javax.swing.JButton oneButton;
private javax.swing.JButton orButton;
private javax.swing.JButton plusButton;
private javax.swing.JButton positiveNegativeToggle;
private javax.swing.JButton sevenButton;
private javax.swing.JButton sixButton;
private javax.swing.JTextField tempTextField;
private javax.swing.JButton threeButton;
private javax.swing.JButton twoButton;
private javax.swing.JButton xorButton;
private javax.swing.JButton zeroButton;
// End of variables declaration
}
看这里:java swing中的计算器。它在面板中使用GridLayout，可能会对你有所帮助。
这是一个与GroupLayout几乎相同布局的代码片段，但只有10行代码:
DesignGridLayout layout = new DesignGridLayout(getContentPane());
layout.row().grid().add(tempTextField);
layout.row().grid().add(sevenButton, eightButton, nineButton).grid().add(plusButton, minusButton, divisionButton);
layout.row().grid().add(fourButton, fiveButton, sixButton).grid().add(multiplication, andButton, orButton);
layout.row().grid().add(oneButton, twoButton, threeButton).grid().add(xorButton, norButton, equalsButton);
layout.row().grid().add(zeroButton, positiveNegativeToggle, decimalPoint).grid().empty().add(nandButton).empty();
layout.row().grid(1).add(base16A, base16B, base16C);
layout.row().grid(1).add(base16D, base16E, base16F);
layout.emptyRow();
layout.row().left().add(makLogo);
它使用DesignGridLayout使布局易于编码和维护。与基于GroupLayout的示例的唯一视觉区别是，当您放大框架时，所有按钮都会变大(根据我自己的品味，这并不一定是坏的)。
请注意，我花了大约5-10分钟来写上面的10行。
编辑:添加了额外的2行代码来添加底部的标志