在getColumnClass(int col)函数中,getColumnClass(int col)中的java.util.Date类的class是什么?静态变量还是什么?在javadoc里没有查到。/*
* TestTableModel2.java
*
* Created on September 3, 2002, 11:34 AM
*/package ch17;/**
*
* @author Stephen Potts
*/import java.util.Calendar;
import java.util.GregorianCalendar;
import javax.swing.table.AbstractTableModel;
public class TestTableModel2 extends AbstractTableModel
{
public final static int FIRST_NAME = 0;
public final static int LAST_NAME = 1;
public final static int DOB = 2;
public final static int CERTIFICATION = 3;
public final static int SALARY = 4;
public final static boolean PROGRAMMER = true;
public final static boolean INSTRUCTOR = false;
public final static String[] columnHeaders =
{
"First Name", "Last Name", "DOB", "Programmer", "Salary"
};
public Object[][] dataValues =
{
{
"Bush", "Bob",
new GregorianCalendar(1954, Calendar.JULY, 4).getTime(),
new Boolean(INSTRUCTOR), new Float(90000)
},
{
"Ezaguirre", "Art",
new GregorianCalendar(1959, Calendar.DECEMBER, 25).getTime(),
new Boolean(PROGRAMMER), new Float(80000)
},
{
"Jenkins", "Lewellen",
new GregorianCalendar(1961, Calendar.AUGUST, 1).getTime(),
new Boolean(PROGRAMMER), new Float(70000)
},
{
"Wells", "Patricia",
new GregorianCalendar(1965, Calendar.JUNE, 20).getTime(),
new Boolean(INSTRUCTOR), new Float(60000)
},
{
"Fleming", "Terry",
new GregorianCalendar(1953, Calendar.NOVEMBER, 4).getTime(),
new Boolean(INSTRUCTOR), new Float(66000)
},
{
"Tippets", "Rick",
new GregorianCalendar(1959, Calendar.SEPTEMBER, 25).getTime(),
new Boolean(PROGRAMMER), new Float(80000)
},
{
"Hall", "Andy",
new GregorianCalendar(1956, Calendar.DECEMBER, 1).getTime(),
new Boolean(PROGRAMMER), new Float(100000)
},
{
"Gummer", "Steve",
new GregorianCalendar(1967, Calendar.JUNE, 20).getTime(),
new Boolean(INSTRUCTOR), new Float(65000)
}
};
/** Creates a new instance of TestTableModel2 */
public TestTableModel2()
{
}
public int getColumnCount()
{
return dataValues[0].length;
}
public int getRowCount()
{
return dataValues.length;
}
public Object getValueAt(int row, int column)
{
return dataValues[row][column];
}
public String getColumnName(int col)
{
return columnHeaders[col];
}
public Class getColumnClass(int col)
{
Class colDataType = super.getColumnClass(col); if (col == DOB)
colDataType = java.util.Date.class;
if (col == CERTIFICATION)
colDataType = java.lang.Boolean.class;
if (col == SALARY)
colDataType = Float.class;
return colDataType; }
}
* TestTableModel2.java
*
* Created on September 3, 2002, 11:34 AM
*/package ch17;/**
*
* @author Stephen Potts
*/import java.util.Calendar;
import java.util.GregorianCalendar;
import javax.swing.table.AbstractTableModel;
public class TestTableModel2 extends AbstractTableModel
{
public final static int FIRST_NAME = 0;
public final static int LAST_NAME = 1;
public final static int DOB = 2;
public final static int CERTIFICATION = 3;
public final static int SALARY = 4;
public final static boolean PROGRAMMER = true;
public final static boolean INSTRUCTOR = false;
public final static String[] columnHeaders =
{
"First Name", "Last Name", "DOB", "Programmer", "Salary"
};
public Object[][] dataValues =
{
{
"Bush", "Bob",
new GregorianCalendar(1954, Calendar.JULY, 4).getTime(),
new Boolean(INSTRUCTOR), new Float(90000)
},
{
"Ezaguirre", "Art",
new GregorianCalendar(1959, Calendar.DECEMBER, 25).getTime(),
new Boolean(PROGRAMMER), new Float(80000)
},
{
"Jenkins", "Lewellen",
new GregorianCalendar(1961, Calendar.AUGUST, 1).getTime(),
new Boolean(PROGRAMMER), new Float(70000)
},
{
"Wells", "Patricia",
new GregorianCalendar(1965, Calendar.JUNE, 20).getTime(),
new Boolean(INSTRUCTOR), new Float(60000)
},
{
"Fleming", "Terry",
new GregorianCalendar(1953, Calendar.NOVEMBER, 4).getTime(),
new Boolean(INSTRUCTOR), new Float(66000)
},
{
"Tippets", "Rick",
new GregorianCalendar(1959, Calendar.SEPTEMBER, 25).getTime(),
new Boolean(PROGRAMMER), new Float(80000)
},
{
"Hall", "Andy",
new GregorianCalendar(1956, Calendar.DECEMBER, 1).getTime(),
new Boolean(PROGRAMMER), new Float(100000)
},
{
"Gummer", "Steve",
new GregorianCalendar(1967, Calendar.JUNE, 20).getTime(),
new Boolean(INSTRUCTOR), new Float(65000)
}
};
/** Creates a new instance of TestTableModel2 */
public TestTableModel2()
{
}
public int getColumnCount()
{
return dataValues[0].length;
}
public int getRowCount()
{
return dataValues.length;
}
public Object getValueAt(int row, int column)
{
return dataValues[row][column];
}
public String getColumnName(int col)
{
return columnHeaders[col];
}
public Class getColumnClass(int col)
{
Class colDataType = super.getColumnClass(col); if (col == DOB)
colDataType = java.util.Date.class;
if (col == CERTIFICATION)
colDataType = java.lang.Boolean.class;
if (col == SALARY)
colDataType = Float.class;
return colDataType; }
}
解决方案 »
- java布局管理器和java框架编写问题
- JSP中为什么找不到我的类
- public static 的问题
- 请问各位大哥: 如何获得 Array中元素的数据类型,如何获得 List中元素的数据类型
- **怎样获取网站上任一目录的文件列表**
- java.net.socketpermission的问题
- Java中绘图问题!!!
- JDK怎样设置在CMD中 也就是环境变量的设置
- 一个简单类设计问题
- 请问java程序中的import为什么有的用java.….*,而有的又用java.….…,有什么区别吗?
- 如何改变默认观感?
- 如何使得程序支持内嵌的java程序就像word中的宏一样?新手上路,请各位高手不吝赐教
C#里的counterpart叫做“Type”对象,“类型对象”或许更好理解一些。