Swing之JTable篇综合例子,在表中插入一行记录,对表列排序等

本文介绍如何利用AbstractTableModel接口实现JTable组件在运行时动态增加行记录的功能,通过实例代码演示了如何监听文本输入并将其内容作为新增行的数据插入到表格中。

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通过实现AbstractTableModel接口实现即使向表中增加一行记录 
import java.awt.BorderLayout;   
import java.awt.Point;   
import java.awt.event.ActionEvent;   
import java.awt.event.ActionListener;   
import java.awt.event.ComponentAdapter;   
import java.awt.event.ComponentEvent;   
import java.util.Vector;   
  
import javax.swing.JFrame;   
import javax.swing.JScrollPane;   
import javax.swing.JTable;   
import javax.swing.JTextField;   
import javax.swing.JViewport;   
import javax.swing.SwingUtilities;   
import javax.swing.table.AbstractTableModel;   
  
public class RowAdder extends JFrame {   
  
  final SimpleModel tableData = new SimpleModel();   
  JTable table = new JTable(tableData);   
  
  public static void main(String[] args) {   
    RowAdder ra = new RowAdder();   
    ra.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);   
    ra.setSize(400, 300);   
    ra.setVisible(true);   
  }   
  
  public RowAdder() {   
    final JTextField textField  = new JTextField();   
    setLayout(new BorderLayout());   
    add(new JScrollPane(table), BorderLayout.CENTER);   
    textField.addActionListener(new ActionListener() {   
      public void actionPerformed(ActionEvent event) {   
        tableData.addText(textField.getText());   
        textField.setText("");   
      }   
    });   
    add(textField, BorderLayout.SOUTH);   
  }   
  
}   
class SimpleModel extends AbstractTableModel {   
  
  Vector textData = new Vector();   
  
  public void addText(String text) {   
    textData.addElement(text);   
    fireTableDataChanged();   
  }   
  
  public int getRowCount() {   
    return textData.size();   
  }   
  
  public int getColumnCount() {   
    return 3;   
  }   
  
  public Object getValueAt(int row, int column) {   
    return textData.elementAt(row);   
  }   
  
}  

使用 AbstractTableModel 构建Table格中添加JButton按钮,之前在网上找了2天没有找到好用的程序,最终终于找到一个好用的例子。 不要使,我退你们分。。 sing the Swing JTable class can quickly become a sticky business when you want to customize it to your specific needs. First you must become familiar with how the JTable class is organized. Individual cells are rendered by TableCellRenderer implementations. The table contents are represented by an implementation of the TableModel interface. By default, JTable uses DefaultTableCellRenderer to draw its cells. DefaultTableCellRenderer recognizes a few primitive types, rendering them as strings, and can even display Boolean types as checkboxes. But it defaults to displaying the value returned by toString() for types it does not specifically handle. You have to provide your own TableCellRenderer implementation if you want to display buttons in a JTable. The TableCellRenderer interface contains only one method, getTableCellRendererComponent(...), which returns a java.awt.Component that knows how to draw the contents of a specific cell. Usually, getTableCellRendererComponent() will return the same component for every cell of a column, to avoid the unnecessary use of extra memory. But when the contents of a cell is itself a component, it is all right to return that component as the renderer. Therefore, the first step towards having JButtons display correctly in a JTable is to create a TableCellRenderer implementation that returns the JButton contained in the cell being rendered. In the accompanying code listing, JTableButtonRenderer demonstrates how to do this. Even after creating a custom TableCellRenderer, you're still not done. The TableModel associated with a given JTable does not only keep track of the contents of each cell, but it also keeps track of the class of data stored in each column. DefaultTableModel is designed to work with DefaultTableCellRenderer and will return java.lang.String.class for columns containing data types that it does not specifically handle. The exact method that does this is getColumnClass(int column). Your second step is to create a TableModel implementation that returns JButton.class for cells that contain JButtons. JTableButtonModel shows one way to do this. It just returns the result of getClass() for each piece of cell data. At this point, you're almost done, but not quite. What's the use of putting a JButton in a JTable if you can't press the darn thing? By default, JTable will not forward mouse events to components contained in its cells. If you want to be able to press the buttons you add to JTable, you have to create your own MouseListener that forwards events to the JButton cells. JTableButtonMouseListener demonstrates how you could do this.
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