[英]get node value from JTree and display it in JTable using JButton
我知道這是一個簡單而愚蠢的問題,因為我是新手,所以不知道如何鏈接。
我正在嘗試獲取節點值 (帶有路徑的文件),並使用JButton-“添加文件”將節點值推入JTable中,到目前為止已發布了代碼,但並未給出任何錯誤,但事實並非如此。執行我想要的內容,謝謝。
如何從一個函數到另一個函數獲取節點值,謝謝
從JTree獲取節點值
File root = new File(System.getProperty("user.home"));
FileTreeModel model = new FileTreeModel(root);
JTree tree = new JTree(model);
JScrollPane scrollpane = new JScrollPane(tree);
scrollpane.setBounds(10, 9, 304, 730);
frmViperManufacturingRecord.getContentPane().add(scrollpane);
tree.addTreeSelectionListener(new TreeSelectionListener() {
public void valueChanged(TreeSelectionEvent e) {
File node = (File)e.getPath().getLastPathComponent();
//System.out.println("You selected " + node);
if (!node.isFile()) {
JFrame frame = new JFrame();
JOptionPane.showConfirmDialog(frame, "Please select the valid file to Add Files", "Not Valid File",JOptionPane.PLAIN_MESSAGE );
//if (result == JOptionPane.CANCEL_OPTION);
}
//else
}
});
嘗試將節點值推入JTable
//table just below Add Files button
table_2 = new JTable();
table_2.setBounds(324, 43, 713, 121);
frmViperManufacturingRecord.getContentPane().add(table_2);
使用JButton
// Add files button
JButton btnAddFiles_1 = new JButton("Add Files");
btnAddFiles_1.setMnemonic('A');
btnAddFiles_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
Object rowData[][] = { { "01.", node, }};
Object columnNames[] = { "Sl.no", "File name"};
JTable table = new JTable(rowData, columnNames);
}
});
btnAddFiles_1.setFont(new Font("Calibri", Font.BOLD, 12));
btnAddFiles_1.setBounds(324, 9, 89, 23);
frmViperManufacturingRecord.getContentPane().add(btnAddFiles_1);
這里:
btnAddFiles_1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
Object rowData[][] = { { "01.", node, }};
Object columnNames[] = { "Sl.no", "File name"};
JTable table = new JTable(rowData, columnNames); // new JTable that is not placed in the content pane
}
});
不要重新創建表本身,因為已經創建並放置了table_2
。 而是更新其表模型。 例如:
btnAddFiles_1.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
Object rowData[][] = { { "01.", node, }};
Object columnNames[] = { "Sl.no", "File name"};
table_2.setModel(new DefaultTableModel(rowData, columnNames));
}
});
關於這條線:
table_2.setBounds(324, 43, 713, 121);
Swing設計為可與LayoutManager配合使用,不建議使用setBounds(...)
, setLocation(...)
和setXxxSize(...)
方法。 請參見在容器中布置組件
另外(感謝@mKorbel的評論):
frmViperManufacturingRecord.getContentPane().add(table_2);
表應該放在JScrollPane
,就像您的樹一樣:
JScrollPane scrollPane = new JScrollPane(table_2);
frmViperManufacturingRecord.getContentPane().add(scrollPane);
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