请教如何让 JTable增加一行的时候新增的一行被选中,同时第一个cell处于全选中、可修改状态 Java 达人,我最近在捣腾 Jtable,搞得头都大了,还有有论坛各位大神的帮忙。在此先说一声谢谢了!JFrame上有个 “Add”按钮,按下即给 JTable添加一行数据。我想要的效果是,在给 JTable添加一行数据的时候,能够让新增的一行被选中,同时第一个cell处于全选中、可修改状态。如下图所示,新增加的一行为第 3行。十分感谢! 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 我已经写好的代码是这样的import java.awt.BorderLayout;import java.awt.Component;import java.awt.Dimension;import java.awt.FlowLayout;import java.awt.GridLayout;import java.awt.event.MouseEvent;import java.awt.event.MouseListener;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Vector;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JScrollPane;import javax.swing.JTable;import javax.swing.ListSelectionModel;import javax.swing.ScrollPaneLayout;import javax.swing.SwingConstants;import javax.swing.event.ListSelectionEvent;import javax.swing.event.ListSelectionListener;import javax.swing.table.DefaultTableCellRenderer;import javax.swing.table.DefaultTableModel;import javax.swing.table.TableCellRenderer;import javax.swing.table.TableColumn;public class GlobalVari_6 extends JFrame { private static final long serialVersionUID = 1L; private static double select = 0; private static int rowIndex = 0; public JTable table = null; // 表格方法使用 public GlobalVari_6() { init(); this.setTitle("Global Variables"); this.setSize(new Dimension(650, 400)); this.setLocationRelativeTo(null); this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); this.setVisible(true); // this.setResizable(false); } private void init() { Vector<String> colHeader = new Vector<String>(); Vector<Vector<String>> dataVec = new Vector<Vector<String>>(); colHeader.add(" Variable"); colHeader.add("Value "); colHeader.add("Time "); table = new JTable(dataVec, colHeader) { private static final long serialVersionUID = 1L; public boolean isCellEditable(int row, int column) { if (column > 1) { return false; } else { return true; } } }; // 2设置表头行高 table.getTableHeader().setPreferredSize(new Dimension(0, 20)); // 3设置表内容行高 table.setRowHeight(20); // 4设置单选模式 table.getSelectionModel().setSelectionMode( ListSelectionModel.SINGLE_SELECTION); // 5设置单元格不可拖动 table.getTableHeader().setReorderingAllowed(false); // 6设置不可改变列宽 table.getTableHeader().setResizingAllowed(false); // 7设置列宽 table.getColumnModel().getColumn(0).setPreferredWidth(95); table.getColumnModel().getColumn(1).setPreferredWidth(55); table.getColumnModel().getColumn(2).setPreferredWidth(30); // 注意索引越界 DefaultTableCellRenderer right = new DefaultTableCellRenderer(); // right.setHorizontalAlignment(JLabel.RIGHT); right.setHorizontalAlignment(SwingConstants.RIGHT); table.getColumnModel().getColumn(1).setCellRenderer(right); table.getColumnModel().getColumn(2).setCellRenderer(right); // table.getColumn(table.getColumnName(1)).setHeaderRenderer(right); // table.getTableHeader().setDefaultRenderer(new HeaderRenderer(table)); ((DefaultTableCellRenderer) table.getTableHeader().getDefaultRenderer()) .setHorizontalAlignment(JLabel.RIGHT); TableColumn column = table.getColumnModel().getColumn(0); MultiLineHeaderRenderer headerRenderer = new MultiLineHeaderRenderer( SwingConstants.LEFT, SwingConstants.BOTTOM); column.setHeaderRenderer(headerRenderer); /* * column = table.getColumnModel().getColumn(1); headerRenderer = new * MultiLineHeaderRenderer( SwingConstants.LEFT, SwingConstants.BOTTOM); * column.setHeaderRenderer(headerRenderer); */ final JButton buttonAdd = new JButton("Add"); final JButton buttonDel = new JButton("Delete"); final JButton buttonCls = new JButton("Close"); rowIndex = table.getSelectedRow(); System.out.println("index:" + rowIndex); // 监听事件 table.getSelectionModel().addListSelectionListener( new ListSelectionListener() { public void valueChanged(ListSelectionEvent e) { if (e.getValueIsAdjusting()) {// 连续操作 rowIndex = table.getSelectedRow(); if (rowIndex != -1) { System.out.println("表格行被选中" + rowIndex); buttonDel.setEnabled(true); select = 1; } } } }); JScrollPane scrollPane = new JScrollPane(); scrollPane.setLayout(new ScrollPaneLayout()); scrollPane.setViewportView(table); scrollPane.setBounds(5, 5, 515, 350); this.getContentPane().add(scrollPane); buttonAdd.setEnabled(true); buttonDel.setEnabled(false); buttonCls.setEnabled(true); JPanel panel = new JPanel(); panel.setBounds(520, 5, 10, 350); this.getContentPane().add(panel); panel.setLayout(null); panel.add(buttonAdd); buttonAdd.setSize(100, 22); buttonAdd.setLocation(530, 6); panel.add(buttonDel); buttonDel.setSize(100, 22); buttonDel.setLocation(530, 40); panel.add(buttonCls); buttonCls.setSize(100, 22); buttonCls.setLocation(530, 322); buttonAdd.addMouseListener(new MouseListener() { public void mouseClicked(MouseEvent e) { DefaultTableModel model = (DefaultTableModel) table.getModel(); int rownum = table.getRowCount() + 1; boolean exist = true; for (int i = 0; i < model.getRowCount(); i++) { if (model.getValueAt(i, 0).equals("gvar" + rownum)) { exist = false; break; } } if (exist == true) model.addRow(new Object[] { "gvar" + rownum, "", new SimpleDateFormat("yyyy-MM-dd HH:mm:ss") .format(new Date()) }); } public void mousePressed(MouseEvent e) { } public void mouseReleased(MouseEvent e) { } public void mouseEntered(MouseEvent e) { } public void mouseExited(MouseEvent e) { } }); buttonDel.addMouseListener(new MouseListener() { public void mouseClicked(MouseEvent e) { if (select == 1) { DefaultTableModel model = (DefaultTableModel) table .getModel(); model.removeRow(rowIndex); select = 0; buttonDel.setEnabled(false); } } public void mousePressed(MouseEvent e) { } public void mouseReleased(MouseEvent e) { } public void mouseEntered(MouseEvent e) { } public void mouseExited(MouseEvent e) { } }); buttonCls.addMouseListener(new MouseListener() { public void mouseClicked(MouseEvent e) { setVisible(false); } public void mousePressed(MouseEvent e) { } public void mouseReleased(MouseEvent e) { } public void mouseEntered(MouseEvent e) { } public void mouseExited(MouseEvent e) { } }); this.pack(); } public static void main(String[] args) { new GlobalVari_6(); }} 在你的buttonAdd.addMouseListener(new MouseListener() { public void mouseClicked(MouseEvent e) {}方法的最后面加上以下代码,试试看。int row = model.getRowCount() - 1;int col = 0;if (table.editCellAt(row, col)) { Component editor = table.getEditorComponent(); editor.requestFocusInWindow(); Component c = editor.getComponentAt(0, 0); if (c != null && c instanceof JTextComponent) { ((JTextComponent) c).selectAll(); }} scbb, 大神呀!!!欢天喜地结贴去! java winsock 高分 正则表达式 什么类可以操作多媒体 String 问题 高手帮帮忙!关于连接SQL2000数据库的问题 用正则表达式处理问题 在Spring docs 的index.html内的“查找”用不了! 请教!!!!!!!! 请问,pb组件是否能够发布到jboss吗? 印度软件出口量这么大,他们都开发哪方面的软件呢? 菜鸟一枚,求代码优化1拒绝灌水! 请教 JTable 里的单元格如何使得双击进入单元格后,单元格的内容处于全选中状态
import java.awt.Component;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Vector;import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.ScrollPaneLayout;
import javax.swing.SwingConstants;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;public class GlobalVari_6 extends JFrame {
private static final long serialVersionUID = 1L; private static double select = 0;
private static int rowIndex = 0; public JTable table = null; // 表格方法使用
public GlobalVari_6() {
init(); this.setTitle("Global Variables");
this.setSize(new Dimension(650, 400));
this.setLocationRelativeTo(null);
this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
this.setVisible(true);
// this.setResizable(false);
} private void init() {
Vector<String> colHeader = new Vector<String>(); Vector<Vector<String>> dataVec = new Vector<Vector<String>>(); colHeader.add(" Variable");
colHeader.add("Value ");
colHeader.add("Time "); table = new JTable(dataVec, colHeader) {
private static final long serialVersionUID = 1L; public boolean isCellEditable(int row, int column) {
if (column > 1) {
return false;
} else {
return true;
}
}
}; // 2设置表头行高
table.getTableHeader().setPreferredSize(new Dimension(0, 20));
// 3设置表内容行高
table.setRowHeight(20);
// 4设置单选模式
table.getSelectionModel().setSelectionMode(
ListSelectionModel.SINGLE_SELECTION);
// 5设置单元格不可拖动
table.getTableHeader().setReorderingAllowed(false);
// 6设置不可改变列宽
table.getTableHeader().setResizingAllowed(false);
// 7设置列宽
table.getColumnModel().getColumn(0).setPreferredWidth(95);
table.getColumnModel().getColumn(1).setPreferredWidth(55);
table.getColumnModel().getColumn(2).setPreferredWidth(30);
// 注意索引越界 DefaultTableCellRenderer right = new DefaultTableCellRenderer();
// right.setHorizontalAlignment(JLabel.RIGHT);
right.setHorizontalAlignment(SwingConstants.RIGHT);
table.getColumnModel().getColumn(1).setCellRenderer(right);
table.getColumnModel().getColumn(2).setCellRenderer(right);
// table.getColumn(table.getColumnName(1)).setHeaderRenderer(right);
// table.getTableHeader().setDefaultRenderer(new HeaderRenderer(table));
((DefaultTableCellRenderer) table.getTableHeader().getDefaultRenderer())
.setHorizontalAlignment(JLabel.RIGHT); TableColumn column = table.getColumnModel().getColumn(0);
MultiLineHeaderRenderer headerRenderer = new MultiLineHeaderRenderer(
SwingConstants.LEFT, SwingConstants.BOTTOM);
column.setHeaderRenderer(headerRenderer); /*
* column = table.getColumnModel().getColumn(1); headerRenderer = new
* MultiLineHeaderRenderer( SwingConstants.LEFT, SwingConstants.BOTTOM);
* column.setHeaderRenderer(headerRenderer);
*/ final JButton buttonAdd = new JButton("Add");
final JButton buttonDel = new JButton("Delete");
final JButton buttonCls = new JButton("Close"); rowIndex = table.getSelectedRow();
System.out.println("index:" + rowIndex);
// 监听事件
table.getSelectionModel().addListSelectionListener(
new ListSelectionListener() {
public void valueChanged(ListSelectionEvent e) {
if (e.getValueIsAdjusting()) {// 连续操作
rowIndex = table.getSelectedRow();
if (rowIndex != -1) {
System.out.println("表格行被选中" + rowIndex);
buttonDel.setEnabled(true);
select = 1;
}
}
}
}); JScrollPane scrollPane = new JScrollPane();
scrollPane.setLayout(new ScrollPaneLayout());
scrollPane.setViewportView(table);
scrollPane.setBounds(5, 5, 515, 350);
this.getContentPane().add(scrollPane); buttonAdd.setEnabled(true);
buttonDel.setEnabled(false);
buttonCls.setEnabled(true); JPanel panel = new JPanel();
panel.setBounds(520, 5, 10, 350);
this.getContentPane().add(panel); panel.setLayout(null);
panel.add(buttonAdd);
buttonAdd.setSize(100, 22);
buttonAdd.setLocation(530, 6);
panel.add(buttonDel);
buttonDel.setSize(100, 22);
buttonDel.setLocation(530, 40);
panel.add(buttonCls);
buttonCls.setSize(100, 22);
buttonCls.setLocation(530, 322); buttonAdd.addMouseListener(new MouseListener() {
public void mouseClicked(MouseEvent e) {
DefaultTableModel model = (DefaultTableModel) table.getModel();
int rownum = table.getRowCount() + 1;
boolean exist = true;
for (int i = 0; i < model.getRowCount(); i++) {
if (model.getValueAt(i, 0).equals("gvar" + rownum)) {
exist = false;
break;
}
} if (exist == true)
model.addRow(new Object[] {
"gvar" + rownum,
"",
new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
.format(new Date()) });
} public void mousePressed(MouseEvent e) {
} public void mouseReleased(MouseEvent e) {
} public void mouseEntered(MouseEvent e) {
} public void mouseExited(MouseEvent e) {
}
}); buttonDel.addMouseListener(new MouseListener() {
public void mouseClicked(MouseEvent e) {
if (select == 1) {
DefaultTableModel model = (DefaultTableModel) table
.getModel();
model.removeRow(rowIndex);
select = 0;
buttonDel.setEnabled(false);
}
} public void mousePressed(MouseEvent e) {
} public void mouseReleased(MouseEvent e) {
} public void mouseEntered(MouseEvent e) {
} public void mouseExited(MouseEvent e) {
}
}); buttonCls.addMouseListener(new MouseListener() {
public void mouseClicked(MouseEvent e) {
setVisible(false);
} public void mousePressed(MouseEvent e) {
} public void mouseReleased(MouseEvent e) {
} public void mouseEntered(MouseEvent e) {
} public void mouseExited(MouseEvent e) {
}
}); this.pack();
}
public static void main(String[] args) {
new GlobalVari_6();
}
}
buttonAdd.addMouseListener(new MouseListener() {
public void mouseClicked(MouseEvent e) {}
方法的最后面加上以下代码,试试看。
int row = model.getRowCount() - 1;
int col = 0;
if (table.editCellAt(row, col)) {
Component editor = table.getEditorComponent();
editor.requestFocusInWindow();
Component c = editor.getComponentAt(0, 0);
if (c != null && c instanceof JTextComponent) {
((JTextComponent) c).selectAll();
}
}