我在Jpanel里面有一个表，表的大小是固定的，我想让它变得动态。如果我们最大化帧，表的大小应该增加
下面是代码
public class LogsAutomationUIFrame extends JFrame {
private JPanel contentPane;
private JTextField textField;
private JTextField textField_1;
private JTextField textField_2;
private JTable table;
private JTextField fieldDownloadPath = new JTextField(30);
JLabel lblNewLabel_4;
JLabel lblNewLabel_3;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
LogsAutomationUIFrame frame = new LogsAutomationUIFrame();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
static DefaultTableModel model= new DefaultTableModel(0, 0);
private JPasswordField passwordField;
/**
* Create the frame.
*/
public LogsAutomationUIFrame() {
JFrame frame = new JFrame();
table = new JTable();
table.setAutoResizeMode( JTable.AUTO_RESIZE_OFF );
table.setAutoCreateRowSorter(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 783, 567);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JLabel lblEnvironment = new JLabel("Environment");
lblEnvironment.setBounds(10, 44, 81, 21);
contentPane.add(lblEnvironment);
/*textField = new JTextField();
textField.setBounds(103, 44, 109, 20);
contentPane.add(textField);*/
//textField.setColumns(10);
String[] choices = { "CHOICE 1","CHOICE 2", "CHOICE 3","CHOICE 4","CHOICE 5","CHOICE 6"};
final JComboBox<String> cb = new JComboBox<String>();
//ComboBoxModel<String[]> choice = new ComboBoxModel<String[]>();
final File folder = new File("");
File folderParent = new File(folder.getAbsolutePath());
List<String> choiceVal = listFilesForFolder(folderParent);
//List<String> choiceVal = new ArrayList<String>();
cb.setModel(new ToComboBoxModel(choiceVal));
cb.setBounds(103, 44, 109, 20);
cb.setVisible(true);
contentPane.add(cb);
JLabel Path = new JLabel("Path");
Path.setBounds(10, 76, 46, 14);
contentPane.add(Path);
textField_1 = new JTextField();
textField_1.setBounds(103, 73, 109, 20);
contentPane.add(textField_1);
textField_1.setColumns(10);
JLabel lblNewLabel = new JLabel("Search String");
lblNewLabel.setBounds(10, 101, 81, 21);
contentPane.add(lblNewLabel);
textField_2 = new JTextField();
textField_2.setBounds(103, 101, 109, 20);
contentPane.add(textField_2);
textField_2.setColumns(10);
JButton btnSearchString = new JButton("Search String");
btnSearchString.setBounds(231, 103, 137, 23);
btnSearchString.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
try {
LogsAutomationServiceImpl serviceImpl = new LogsAutomationServiceImpl();
String searchEnvironment = cb.getSelectedItem().toString();
String searchPath = textField_1.getText();
String searchString = textField_2.getText();
/*Properties prop = LogsAutomationServiceImpl.getProperties();
lblNewLabel_4.setText(prop.getProperty("results_limit"));*/
//System.out.println("textField:::"+textField.getText());
String password = passwordField.getText();
model = serviceImpl.setTableData(searchEnvironment, searchPath, searchString, lblNewLabel_3, lblNewLabel_4, password);
table.setModel(model);
resizeColumnWidth(table);
table.setRowHeight(50);
} catch (Exception excption) {
excption.printStackTrace();
}
}
});
contentPane.add(btnSearchString);
JLabel lblNewLabel_1 = new JLabel("Results Number");
lblNewLabel_1.setBounds(10, 150, 101, 14);
contentPane.add(lblNewLabel_1);
JLabel lblNewLabel_2 = new JLabel("Results Limit");
lblNewLabel_2.setBounds(10, 178, 81, 14);
contentPane.add(lblNewLabel_2);
lblNewLabel_3 = new JLabel();
lblNewLabel_3.setBounds(103, 150, 60, 14);
contentPane.add(lblNewLabel_3);
lblNewLabel_4 = new JLabel();
lblNewLabel_4.setBounds(103, 178, 60, 14);
contentPane.add(lblNewLabel_4);
Object[] columnNames = {"host", "folder", "file", "grepResult"};
Object[][] data = {
{"Buy", "IBM", new Integer(1000), new Double(80.50)},
{"Sell", "MicroSoft", new Integer(2000), new Double(6.25)},
{"Sell", "Apple", new Integer(3000), new Double(7.35)},
{"Buy", "Nortel", new Integer(4000), new Double(20.00)}
};
table.setModel(model);
// table.setCellSelectionEnabled(true);
table.addMouseListener(new java.awt.event.MouseAdapter() {
@Override
public void mouseClicked(java.awt.event.MouseEvent evt) {
int row = table.rowAtPoint(evt.getPoint());
int col = table.columnAtPoint(evt.getPoint());
if (col == 2) {
System.out.println("row is :::"+ row+":::"+col+"::::"+table.getValueAt(row, col));
String fileName = table.getValueAt(row, col).toString();
String hostName = table.getValueAt(row, 0).toString();
String folderName = table.getValueAt(row, 1).toString();
Exec obj = new Exec();
String password = passwordField.getText();
obj.downloadFile(hostName, cb.getSelectedItem().toString(), fileName, folderName, password);
}
}
});
//table.getSelectionModel().addListSelectionListener(new CustomTableCellRenderer());
//table.setDefaultRenderer(Object.class, new CustomTableCellRenderer());
table.setSize(this.WIDTH, this.HEIGHT);
JScrollPane scrollPane = new JScrollPane(table);
scrollPane.setBounds(10, 267, 650, 205);
getContentPane().add(scrollPane);
//scrollPane.setSize(this.WIDTH, this.HEIGHT);
contentPane.add(scrollPane, BorderLayout.CENTER);
JLabel lblPassword = new JLabel("Password");
lblPassword.setBounds(10, 212, 81, 14);
contentPane.add(lblPassword);
passwordField = new JPasswordField();
passwordField.setBounds(103, 203, 109, 20);
contentPane.add(passwordField);
contentPane.setSize(this.WIDTH, this.HEIGHT);
//frame.getContentPane().add(contentPane);
}
public static void resizeColumnWidth(JTable table) {
final TableColumnModel columnModel = table.getColumnModel();
for (int column = 0; column < table.getColumnCount(); column++) {
int width = 15; // Min width
for (int row = 0; row < table.getRowCount(); row++) {
TableCellRenderer renderer = table.getCellRenderer(row, column);
Component comp = table.prepareRenderer(renderer, row, column);
width = Math.max(comp.getPreferredSize().width +1 , width);
}
if(width > 500)
width=500;
columnModel.getColumn(column).setPreferredWidth(width);
}
}
class MyRenderer implements TableCellRenderer {
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,
boolean hasFocus, int row, int column) {
JTextField editor = new JTextField();
if (value != null)
editor.setText(value.toString());
editor.setBackground((row % 2 == 0) ? Color.white : Color.cyan);
return editor;
}
}
public static List<String> listFilesForFolder(final File folder) {
List<String> fileNames = new ArrayList<String>();
for (final File fileEntry : folder.listFiles()) {
if (fileEntry.isDirectory()) {
listFilesForFolder(fileEntry);
} else {
if(fileEntry.getName().toString().contains(".properties")) {
fileNames.add(fileEntry.getName());
}
}
}
return fileNames;
}
}
我尝试了很多方法来查看堆栈溢出链接，例如将大小设置为＆＃34; this.widht＆＃34;和＆＃34; this.height＆＃34;他们都没有工作。
当我将Jpanel宽度设为＆＃34; this.width＆＃34;并启动应用程序的大小非常小 当我试图为滚动条数据添加相同的东西时没有显示
答案 0 :(得分：0)
I would first add the JTable to a JScrollPane, then add this JScrollPane to a JPanel, having a LayoutManager like BorderLayout and then add the JPanel to the JFrame... something like this:
JPanel panel = new JPanel();
panel.setLayout(new BorderLayout());
JScrollPane scp = new JScrollPane(table);
panel.add(BorderLayout.CENTER,scp);
this.getContentPane().setLayout(new BorderLayout());
this.getContentPane().add(BorderLayout.CENTER,panel);
this.pack();
this.setVisible(true);
As Sergiy mentioned, as soon, as there is a LayoutManger, it rocks...