jtable

问题 Hi i am reading a text file into JTable , but here is what my JTable Looks Like Now: How can I format it correctly and allow JTable to be editable by users? My Text File: File Name(people.txt) COLUMN_NAME COLUMN_TYPE IS_NULLABLE COLUMN_KEY COLUMN_DEFAULT EXTRA Names VARCHAR(500) NO Address VARCHAR(500) NO Coding so far: import java.io.*; import java.awt.*; import java.util.*; import javax.swing.*; import java.awt.event.*; import javax.swing.table.*; public class stackq extends

问题 I want to display a small context menu when a user right clicks a table row in my application. My plan was to use a custom made MouseListener for this that calls the show() method. Here is my code: import java.awt.Point; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import javax.swing.JMenuItem; import javax.swing.JPopupMenu; import javax.swing.JTable; import javax.swing.SwingUtilities; class

问题 I am developing a custom search component. When clicked on the button(search image icon) inside the text field, a table is displayed. The code is in very nascent stage so lots of things is not there. As of now, I am stuck because I am not able to navigate the table with the arrow keys. Neither am I able to move to the next text field with "tab" key, once I select a row in the table. The objective of the component is to select a row from the table and then with the help of the supporting

问题 I want to color a Table row depending on whether there is a non-null in its 3rd column. Heres the code that I wrote : (ignore the braces) public Component prepareRenderer(TableCellRenderer renderer, int row, int column) { JComponent c =(JComponent) super.prepareRenderer(renderer, row, column); c.setBorder(BorderFactory.createLineBorder(Color.LIGHT_GRAY, 1)); if (column == 2 ){ String value = (String) getValueAt(row, column); System.out.println(value); if (! value.equals(null)){ c

问题 I am trying to update a JTable when a users edit and enters new values into it, but I am getting casting error. Coding So Far: import java.io.*; import java.awt.*; import java.util.*; import javax.swing.*; import java.awt.event.*; import javax.swing.table.*; public class Stackq extends AbstractTableModel { Vector data; Vector columns; public Stackq() { String line; data = new Vector(); columns = new Vector(); int count = 0; try { FileInputStream fis = new FileInputStream("D:/joy/text

问题 I am working with an extension of the DefaultTableModel as follows: This is the NEW AchievementTableModel after updating it to reflect input from some answers. public AchievementTableModel(Object[][] c, Object[] co) { super(c,co); } public boolean isCellEditable(int r, int c) {return false;} public void replace(Object[][] c, Object[] co) { setDataVector(convertToVector(c), convertToVector(co)); fireTableDataChanged(); } My GUI is a JTable that has the following properties: if(table==null)

问题 I need to add a checkbox the rows, but I don't know how to do that. I'm using an own Table Model that I got on internet. Table Model's code: import java.util.ArrayList; import javax.swing.table.AbstractTableModel; /**************/ public class ModeloTabela extends AbstractTableModel { private ArrayList linhas = null; private String [] colunas = null; public ModeloTabela(ArrayList lin, String[] col){ setLinhas(lin); setColunas(col); } public ArrayList getLinhas(){ return linhas; } public void

问题 I have a JPanel component with a JTable inside of it. When I run the code as it's written below, the table renders and updates correctly. As soon as I try to use the scrollPane approach, the table does not render at all. Can anyone explain to me why this is? private static class GameHistoryPanel extends JPanel { private DataModel model; private JTable table; private int currentRow; private int currentColumn; private final Dimension HISTORY_PANEL_DIMENSION = new Dimension(190,460); public

问题 I have a JPanel component with a JTable inside of it. When I run the code as it's written below, the table renders and updates correctly. As soon as I try to use the scrollPane approach, the table does not render at all. Can anyone explain to me why this is? private static class GameHistoryPanel extends JPanel { private DataModel model; private JTable table; private int currentRow; private int currentColumn; private final Dimension HISTORY_PANEL_DIMENSION = new Dimension(190,460); public

问题 I use JTable GUI component with NetBeans. I want to create multi-line headers I am able to this, when I create custom renderer for table headers BUT I don't want to, because I like default one (I use it everywhere else in program). So the problem is : How to make header heigher? My code : String headers[] = new String[3]; headers[0] = "Header1"; headers[1] = "Header2"; headers[2] = "<html><center>Long<br>Centered</br></center></html>"; DefaultTableModel dtm = new DefaultTableModel(); dtm