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我非常卡住。希望这里有一个善良的人可以帮助我用一行代码来使我的平板显示器进一步穿过它的面板。目前它在屏幕中间保持非常小的状态！我尝试了很多方法，最近在尝试改变列的宽度时失败了（因为反正页面/ gui的大小是固定的）。无论如何，JTable的代码位于底部。我希望你能有所帮助！它只有一个方法和类，所以它很容易复制和粘贴和运行（如果你嫌麻烦的是，如果你不能我明白了！）jtable列太小
import javax.swing.*;
import javax.swing.table.TableColumn;
import java.awt.*;
public class second extends JFrame
{
/**
*
*/
private static final long serialVersionUID = 1L;
public second()
{
}
public static void main(String[] args)
{
second sec = new second();
sec.createFrame();
}
@SuppressWarnings("deprecation")
private void createFrame()
{
JFrame frame = new JFrame("Second attempt");
JPanel content = new JPanel(new BorderLayout(5,10));
frame.getContentPane().add(content);
frame.setResizable(false);
JPanel requestor = new JPanel(new GridLayout(1, 4, 15, 20));
content.add("North", requestor);
requestor.setBorder(BorderFactory.createTitledBorder(BorderFactory.createLineBorder(Color.gray), "Requestor"));
JPanel col1 = new JPanel();
BoxLayout boxLayout1 = new BoxLayout(col1, BoxLayout.Y_AXIS);
col1.setLayout(boxLayout1);
JPanel col2 = new JPanel();
BoxLayout boxLayout2 = new BoxLayout(col2, BoxLayout.Y_AXIS);
col2.setLayout(boxLayout2);
JPanel col3 = new JPanel();
BoxLayout boxLayout3 = new BoxLayout(col3, BoxLayout.Y_AXIS);
col3.setLayout(boxLayout3);
JPanel col4 = new JPanel();
BoxLayout boxLayout4 = new BoxLayout(col4, BoxLayout.Y_AXIS);
col4.setLayout(boxLayout4);
requestor.add(col1);
requestor.add(col2);
requestor.add(col3);
requestor.add(col4);
//create JLabels
JLabel requestorId = new JLabel("RequestorID");
JLabel org = new JLabel("Organisation");
JLabel orgAddress = new JLabel("Organisation Address");
JLabel otherAdd = new JLabel("Other Address");
JLabel title = new JLabel("Title");
JLabel phoneNo = new JLabel("Phone Number");
JLabel firstName = new JLabel("First Name");
JLabel surname = new JLabel("Surname");
JLabel emailAdd = new JLabel("E Mail Address");
JLabel dept = new JLabel("Department");
JLabel fax = new JLabel("Fax Number");
JLabel spacer = new JLabel("Spacer");
//create text areas
JTextField reqIDTxt = new JTextField();
JTextField orgTxt = new JTextField();
JTextField orgAddTxt = new JTextField();
JTextField otherAddTxt = new JTextField();
JTextField titleTxt = new JTextField();
JTextField phoneNoTxt = new JTextField();
JTextField firstNameTxt = new JTextField();
JTextField faxNoTxt = new JTextField();
JTextField surnameTxt = new JTextField();
JTextField emailTxt = new JTextField();
JTextField deptTxt = new JTextField();
JTextField spacerTxt = new JTextField();
col1.add(requestorId);
col1.add(reqIDTxt);
col1.add(title);
col1.add(titleTxt);
col1.add(firstName);
col1.add(firstNameTxt);
col1.add(surname);
col1.add(surnameTxt);
col1.add(dept);
col1.add(deptTxt);
col2.add(org);
col2.add(orgTxt);
col2.add(phoneNo);
col2.add(phoneNoTxt);
col2.add(fax);
col2.add(faxNoTxt);
col2.add(emailAdd);
col2.add(emailTxt);
col2.add(spacer);
col2.add(spacerTxt);
col3.add(orgAddress);
col3.add(orgAddTxt);
col4.add(otherAdd);
col4.add(otherAddTxt);
JPanel buttonsPanel = new JPanel(new BorderLayout());
content.add("Center", buttonsPanel);
JPanel buttons = new JPanel(new FlowLayout());
buttonsPanel.add("North", buttons);
buttons.setBorder(BorderFactory.createTitledBorder(BorderFactory.createLineBorder(Color.gray)));
JButton addBtn = new JButton("Add");
JButton deleteBtn = new JButton("Delete");
JButton clearAllBbtn = new JButton("Clear All");
JButton copyReqBtn = new JButton("Copy Requestor");
buttons.add(addBtn);
buttons.add(deleteBtn);
buttons.add(clearAllBbtn);
buttons.add(copyReqBtn);
JPanel checkBoxPanel = new JPanel(new BorderLayout());
buttonsPanel.add("Center", checkBoxPanel);
JPanel checkBoxHolder = new JPanel(new BorderLayout());
checkBoxPanel.add("North", checkBoxHolder);
JCheckBox chkBox = new JCheckBox("Search");
checkBoxHolder.add(chkBox);
JPanel bottomHalf = new JPanel(new BorderLayout());
checkBoxPanel.add("Center",bottomHalf);
//---------------------------------------------------------------------------------------------------------------------
Dimension d = new Dimension(100, 200);
JPanel splitForTable = new JPanel();
BoxLayout lay = new BoxLayout(splitForTable, BoxLayout.X_AXIS);
splitForTable.setLayout(lay);
bottomHalf.add("North",splitForTable);
JPanel rbtn = new JPanel();
BoxLayout layoutRbtn = new BoxLayout(rbtn, BoxLayout.Y_AXIS);
rbtn.setLayout(layoutRbtn);
rbtn.setPreferredSize(d);
splitForTable.add(rbtn);
rbtn.setBorder(BorderFactory.createTitledBorder(BorderFactory.createLineBorder(Color.gray), "Search Criteria"));
JTextField btnBox = new JTextField();
btnBox.setMaximumSize(new Dimension(10500, 20));
ButtonGroup group = new ButtonGroup();
btnBox.setColumns(15);
JRadioButton firstNameRbtn = new JRadioButton("First Name");
JRadioButton surnameRbtn = new JRadioButton("Surname");
JRadioButton orgNameRbtn = new JRadioButton("Organisation Name");
JRadioButton deptRbtn = new JRadioButton("Department");
JRadioButton addresRbtn = new JRadioButton("Address");
JRadioButton addresOtherRbtn = new JRadioButton("Address Other");
group.add(firstNameRbtn);
group.add(surnameRbtn);
group.add(orgNameRbtn);
group.add(deptRbtn);
group.add(addresRbtn);
group.add(addresOtherRbtn);
rbtn.add(btnBox);
rbtn.add(firstNameRbtn);
rbtn.add(surnameRbtn);
rbtn.add(orgNameRbtn);
rbtn.add(deptRbtn);
rbtn.add(addresRbtn);
rbtn.add(addresOtherRbtn);
rbtn.add(Box.createVerticalGlue());
JPanel jtablePanel = new JPanel(new FlowLayout());
splitForTable.add(jtablePanel);
jtablePanel.setBorder(BorderFactory.createTitledBorder(BorderFactory.createLineBorder(Color.gray), "Results"));
//construct dummy data for table at the moment
Object[][] data = {
{"Kathy", "Smith",
"Snowboarding", new Integer(5), new Boolean(false)},
{"John", "Doe",
"Rowing", new Integer(3), new Boolean(true)},
{"Sue", "Black",
"Knitting", new Integer(2), new Boolean(false)},
{"Jane", "White",
"Speed reading", new Integer(20), new Boolean(true)},
{"Joe", "Brown",
"Pool", new Integer(10), new Boolean(false)},
{"Ton", "Parker",
"Pool", new Integer(10), new Boolean(false)},
{"Sky", "Sports",
"Pool", new Integer(12), new Boolean(true)},
{"Ricki", "Lambert",
"Football", new Integer(10), new Boolean(true)},
{"Simon", "Gayton",
"Chemistry", new Integer(15), new Boolean(false)},
{"Tom", "Andrews",
"Golf", new Integer(45), new Boolean(false)},
{"Lionel", "Messi",
"Football", new Integer(10), new Boolean(true)},
{"Tom", "Andrews",
"Golf", new Integer(45), new Boolean(false)},
{"Tom", "Andrews",
"Golf", new Integer(45), new Boolean(false)},
{"Tom", "Andrews",
"Golf", new Integer(45), new Boolean(false)},
};
String[] columnNames = {"First Name",
"Last Name",
"Sport",
"# of Years",
"Vegetarian"};
//THIS IS WHERE ALL TABLE INFORMATION IS USED
JTable table = new JTable(data, columnNames);
JScrollPane scrollPane = new JScrollPane(table);
scrollPane.setPreferredSize(new Dimension(250, 200));
table.setFillsViewportHeight(true);
//scrollPane.add(table);
jtablePanel.add(scrollPane);
JPanel southBtn = new JPanel(new FlowLayout());
content.add("South", southBtn);
JButton bottomOkBtn = new JButton("Ok");
JButton bottomCancelBtn = new JButton("Cancel");
JButton bottomApplyBtn = new JButton("Apply");
southBtn.add(bottomOkBtn);
southBtn.add(bottomCancelBtn);
southBtn.add(bottomApplyBtn);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.show();
}
}