myclienttable.java

Java实现的图书管理系统

/*
 * MyClientTable.java
 *
 * Created on 2003年5月8日, 下午8:36
 */

/**
 *
 * @author  administrator
 */
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;
import java.util.*;


class DataModel extends AbstractTableModel {
    
    Object[][] data = {
    {"书名", "作者", "编号", "价格"},
    {"one", "two", "three", "four"},
    {"five", "six", "seven", "eight"},
    {"nine", "ten", "eleven", "twelve"},
  };
    
    Vector vData=null;
    /** Creates a new instance of MyClientTable */
    public DataModel() 
    {
    }

    public DataModel(Vector v) 
    {
        if(v!=null)
            vData=v;
    }
    /** Returns the number of columns in the model. A
     * <code>JTable</code> uses this method to determine how many columns it
     * should create and display by default.
     *
     * @return the number of columns in the model
     * @see #getRowCount
     *
     */
    public int getColumnCount() 
    {
        if(vData==null)
            return data[0].length;
        else
            return ((Vector)(vData.elementAt(0))).size();
    }
    
    /** Returns the number of rows in the model. A
     * <code>JTable</code> uses this method to determine how many rows it
     * should display.  This method should be quick, as it
     * is called frequently during rendering.
     *
     * @return the number of rows in the model
     * @see #getColumnCount
     *
     */
    public int getRowCount() 
    {
        if(vData==null)
            return (data.length-1);
        else
            return (vData.size()-1);
               
    }
    
    /** Returns the value for the cell at <code>columnIndex</code> and
     * <code>rowIndex</code>.
     *
     * @param	rowIndex	the row whose value is to be queried
     * @param	columnIndex 	the column whose value is to be queried
     * @return	the value Object at the specified cell
     *
     */
    public Object getValueAt(int rowIndex, int columnIndex) 
    {
         if(vData==null)
            return data[rowIndex+1][columnIndex];
        else
            return ((Vector)(vData.elementAt(rowIndex+1))).elementAt(columnIndex);
         
        
    }
    
    public String getColumnName(int column)
    {
        if(vData==null)
            return data[0][column].toString();
        else
            return ((Vector)(vData.elementAt(0))).elementAt(column).toString();
    }
}

class MyClientTable extends JTable {
    
    /** Creates a new instance of MyClientTable */
    public MyClientTable() 
    {
        super(new DataModel());
    }
    
    public MyClientTable(Vector v) 
    {
        super(new DataModel(v));
    }
    
}