添加新行后，JTable不刷新 [英] JTable doesn't refresh after adding new row
问题描述
我在JScrollPane中有一个JTable.调用应该填充表的函数后，我看不到任何更改！我尝试使用table.repaint()，model.fireTableDataChanged()以及其他一些我不记得了的东西-没有任何效果.我在做什么错??
我的功能:
public static void fillVodicTable(JTable table){
DefaultTableModel model=new DefaultTableModel(); //also tried (DefaultTableModel)table.getModel();
table.setModel(model);
model.setColumnIdentifiers(new String[]{"Ime", "Priimek", "Epošta", "Datum rojstva", "Licenca", "Jeziki"});
String [] row={"a","b","c","d","e","f"};
model.addRow(row);
}
1)没有理由要求为DefaultTableModel
model.fireTableDataChanged()
2)没有理由要求table.repaint()，这是没有用的
3)什么是for(Jezik j : v.getTuji_jeziki()) row[5]+=", "+j.toString();您问题的 * *可能超过100％
4)DefaultTableModel在所有情况下均适用，但仅需要在EDT上进行更新，换句话说，这是所有Swing JComponent一起使用的常见问题
5)获得更好的帮助，以便尽快使用 SSCCE
来编辑您的问题.6)EDT == 事件调度线程
7)SSCCE
-
DefaultTableModel
-
model.addRow(row);
-
短
-
自包含
-
正确
-
示例
然后
import java.awt.*;
import java.awt.event.*;
import java.util.Random;
import javax.swing.*;
import javax.swing.border.LineBorder;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
public class DefaultTableModelDemo {
public static final String[] COLUMN_NAMES = {
"Monday", "Tuesday", "Wednesday", "Thursday", "Friday"
};
private DefaultTableModel model = new DefaultTableModel(COLUMN_NAMES, 0);
private JTable table = new JTable(model);
private JPanel mainPanel = new JPanel(new BorderLayout());
private Random random = new Random();
public DefaultTableModelDemo() {
JButton addDataButton = new JButton("Add Data");
JPanel buttonPanel = new JPanel();
buttonPanel.add(addDataButton);
addDataButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
addDataActionPerformed();
}
});
model = new DefaultTableModel(COLUMN_NAMES, 0) {
private static final long serialVersionUID = 1L;
@Override
public Class getColumnClass(int column) {
return getValueAt(0, column).getClass();
}
};
table = new JTable(model) {
private static final long serialVersionUID = 1L;
@Override
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
Component c = super.prepareRenderer(renderer, row, column);
if (isRowSelected(row) && isColumnSelected(column)) {
((JComponent) c).setBorder(new LineBorder(Color.red));
}
return c;
}
};
mainPanel.add(new JScrollPane(table), BorderLayout.CENTER);
mainPanel.add(buttonPanel, BorderLayout.SOUTH);
}
private void addDataActionPerformed() {
for (int i = 0; i < 5; i++) {
Object[] row = new Object[COLUMN_NAMES.length];
for (int j = 0; j < row.length; j++) {
row[j] = random.nextInt(5);
}
model.addRow(row);
}
}
public JComponent getComponent() {
return mainPanel;
}
public static void main(String[] args) {
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
JFrame frame = new JFrame("DefaultTableModelDemo");
frame.getContentPane().add(new DefaultTableModelDemo().getComponent());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
}
I have a JTable inside a JScrollPane. After calling my function which should populate the table I can't see any changes! I'v tried with table.repaint(), model.fireTableDataChanged() and probably some other stuff that I can't remember anymore - nothing worked. What am I doing wrong??
My function:
public static void fillVodicTable(JTable table){
DefaultTableModel model=new DefaultTableModel(); //also tried (DefaultTableModel)table.getModel();
table.setModel(model);
model.setColumnIdentifiers(new String[]{"Ime", "Priimek", "Epošta", "Datum rojstva", "Licenca", "Jeziki"});
String [] row={"a","b","c","d","e","f"};
model.addRow(row);
}
1) there no reason call for model.fireTableDataChanged() for DefaultTableModel
2) there no reason call for table.repaint(), is useless
3) what's for(Jezik j : v.getTuji_jeziki()) row[5]+=", "+j.toString(); there could be more than 100% ** of your issues
4) DefaultTableModel works in all cases, but requierd only update on EDT, in other hands this is common issue for all Swing JComponents together
5) for better help sooner edit yout question with a SSCCE
6) EDT == Event Dispatch Thread
7) SSCCE
DefaultTableModel
model.addRow(row);
Short
Self Contained
Correct
Example
then
import java.awt.*;
import java.awt.event.*;
import java.util.Random;
import javax.swing.*;
import javax.swing.border.LineBorder;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
public class DefaultTableModelDemo {
public static final String[] COLUMN_NAMES = {
"Monday", "Tuesday", "Wednesday", "Thursday", "Friday"
};
private DefaultTableModel model = new DefaultTableModel(COLUMN_NAMES, 0);
private JTable table = new JTable(model);
private JPanel mainPanel = new JPanel(new BorderLayout());
private Random random = new Random();
public DefaultTableModelDemo() {
JButton addDataButton = new JButton("Add Data");
JPanel buttonPanel = new JPanel();
buttonPanel.add(addDataButton);
addDataButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
addDataActionPerformed();
}
});
model = new DefaultTableModel(COLUMN_NAMES, 0) {
private static final long serialVersionUID = 1L;
@Override
public Class getColumnClass(int column) {
return getValueAt(0, column).getClass();
}
};
table = new JTable(model) {
private static final long serialVersionUID = 1L;
@Override
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
Component c = super.prepareRenderer(renderer, row, column);
if (isRowSelected(row) && isColumnSelected(column)) {
((JComponent) c).setBorder(new LineBorder(Color.red));
}
return c;
}
};
mainPanel.add(new JScrollPane(table), BorderLayout.CENTER);
mainPanel.add(buttonPanel, BorderLayout.SOUTH);
}
private void addDataActionPerformed() {
for (int i = 0; i < 5; i++) {
Object[] row = new Object[COLUMN_NAMES.length];
for (int j = 0; j < row.length; j++) {
row[j] = random.nextInt(5);
}
model.addRow(row);
}
}
public JComponent getComponent() {
return mainPanel;
}
public static void main(String[] args) {
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
JFrame frame = new JFrame("DefaultTableModelDemo");
frame.getContentPane().add(new DefaultTableModelDemo().getComponent());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
}
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