java多选框_如何实现复选框列表Java

淩亂°似流年 2022-11-01 15:54 356阅读 0赞

匿名用户

你能告诉我怎么做吗？

使用一列JTable以及适当的呈现器和编辑器。基于此示例，下面的代码依赖于boolean.class类型的数据值的默认呈现器。这里举一个更一般的例子。

![01653da4ea82435eca978c2c0c40a097.png][]import java.awt.Component;

import java.awt.Dimension;

import java.awt.EventQueue;

import java.awt.GridLayout;

import java.util.ArrayList;

import java.util.List;

import java.util.Set;

import java.util.TreeSet;

import javax.swing.BorderFactory;

import javax.swing.DefaultListModel;

import javax.swing.JCheckBox;

import javax.swing.JFrame;

import javax.swing.JList;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTable;

import javax.swing.event.TableModelEvent;

import javax.swing.event.TableModelListener;

import javax.swing.table.AbstractTableModel;

import javax.swing.table.TableCellRenderer;

/\*\* @see https://stackoverflow.com/a/13919878/230513 \*/

public class CheckTable \{

private static final CheckModel model = new CheckModel(5000);

private static final JTable table = new JTable(model) \{

@Override

public Dimension getPreferredScrollableViewportSize() \{

return new Dimension(150, 300);

@Override

public Component prepareRenderer(TableCellRenderer renderer, int row, int column) \{

JCheckBox jcb = (JCheckBox) super.prepareRenderer(renderer, row, column);

jcb.setHorizontalTextPosition(JCheckBox.LEADING);

jcb.setText(String.valueOf(row));

return jcb;

\};

public static void main(String\[\] args) \{

EventQueue.invokeLater(new Runnable() \{

@Override

public void run() \{

JFrame f = new JFrame("CheckTable");

f.setDefaultCloseOperation(JFrame.EXIT\_ON\_CLOSE);

f.setLayout(new GridLayout(1, 0));

f.add(new JScrollPane(table));

f.add(new DisplayPanel(model));

f.pack();

f.setLocationRelativeTo(null);

f.setVisible(true);

\});

private static class DisplayPanel extends JPanel \{

private DefaultListModel dlm = new DefaultListModel();

private JList list = new JList(dlm);

public DisplayPanel(final CheckModel model) \{

super(new GridLayout());

this.setBorder(BorderFactory.createTitledBorder("Checked"));

this.add(new JScrollPane(list));

model.addTableModelListener(new TableModelListener() \{

@Override

public void tableChanged(TableModelEvent e) \{

dlm.removeAllElements();

for (Integer integer : model.checked) \{

dlm.addElement(integer);

\});

private static class CheckModel extends AbstractTableModel \{

private final int rows;

private List rowList;

private Set checked = new TreeSet();

public CheckModel(int rows) \{

this.rows = rows;

rowList = new ArrayList(rows);

for (int i = 0; i < rows; i++) \{

rowList.add(Boolean.FALSE);

@Override

public int getRowCount() \{

return rows;

@Override

public int getColumnCount() \{

return 1;

@Override

public String getColumnName(int col) \{

return "Column " + col;

@Override

public Object getValueAt(int row, int col) \{

return rowList.get(row);

@Override

public void setValueAt(Object aValue, int row, int col) \{

boolean b = (Boolean) aValue;

rowList.set(row, b);

if (b) \{

checked.add(row);

\} else \{

checked.remove(row);

fireTableRowsUpdated(row, row);

@Override

public Class> getColumnClass(int col) \{

return getValueAt(0, col).getClass();

@Override

public boolean isCellEditable(int row, int col) \{

return true;

[01653da4ea82435eca978c2c0c40a097.png]: /images/20221024/3e792688a0e84b52818c8c0ec8fec678.png

java多选框_如何实现复选框列表Java

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