| 发表于：2007-09-26 12:58:45 楼主 |
我是用 jtable 写的这个万年历，但运行后，点击jtable中的单元格时，表中 显示的值全都不显示了，这是怎么回事？？谢谢！！！！
以下是我的两个文件源码：
（1）calendartest.java ：
package forum;
import javax.swing.swingutilities;
import java.awt.borderlayout;
import javax.swing.jpanel;
import javax.swing.jframe;
import java.awt.gridbaglayout;
import javax.swing.jlist;
import java.awt.gridbagconstraints;
import java.awt.flowlayout;
import javax.swing.jcombobox;
import javax.swing.jlabel;
import javax.swing.jtextfield;
import java.awt.gridlayout;
import java.awt.dimension;
import java.util.calendar;
import javax.swing.swingconstants;
import javax.swing.jtable;
import javax.swing.jscrollpane;
/**
*
* 日期：2007-9-24 文件名：calendartest.java 版本：0.1
*/
public class calendartest extends jframe {
private static final long serialversionuid = 1l;
private jpanel jcontentpane = null;
private jpanel datechooserpanel = null;
private jpanel datedisplaypanel = null;
private jcombobox monthcombox = null;
private jcombobox yearcombox = null;
private jlabel currentlabel = null;
private jtextfield currentfield = null;
private jpanel datepanel = null;
private jscrollpane jscrollpane = null;
private jtable datetable = null;
/**
* this method initializes datechooserpanel
*
* @return javax.swing.jpanel
*/
private jpanel getdatechooserpanel（) {
if （datechooserpanel == null) {
currentlabel = new jlabel（);
currentlabel.settext（ "当前选择日期： ");
datechooserpanel = new jpanel（);
datechooserpanel.setlayout（new flowlayout（));
datechooserpanel.add（getyearcombox（), null);
datechooserpanel.add（getmonthcombox（), null);
datechooserpanel.add（currentlabel, null);
datechooserpanel.add（getcurrentfield（), null);
}
return datechooserpanel;
}
/**
* this method initializes datedisplaypanel
*
* @return javax.swing.jpanel
*/
private jpanel getdatedisplaypanel（) {
if （datedisplaypanel == null) {
datedisplaypanel = new jpanel（);
datedisplaypanel.setlayout（new borderlayout（));
datedisplaypanel.add（getdatepanel（), borderlayout.center);
}
return datedisplaypanel;
}
/**
* this method initializes monthcombox
*
* @return javax.swing.jcombobox
*/
private jcombobox getmonthcombox（) {
if （monthcombox == null) {
monthcombox = new jcombobox（);
for （int i = 1; i < 13; i++) {
monthcombox.additem（i);
}
}
return monthcombox;
}
/**
* this method initializes yearcombox
*
* @return javax.swing.jcombobox
*/
private jcombobox getyearcombox（) {
if （yearcombox == null) {
yearcombox = new jcombobox（);
yearcombox.additemlistener（new java.awt.event.itemlistener（) {
public void itemstatechanged（java.awt.event.itemevent e) {
}
});
for （int i = 1990; i < 2001; i++) {
yearcombox.additem（i);
}
}
return yearcombox;
}
/**
* this method initializes currentfield
*
* @return javax.swing.jtextfield
*/
private jtextfield getcurrentfield（) {
if （currentfield == null) {
currentfield = new jtextfield（);
currentfield.seteditable（false);
currentfield.settext（ "1990-01-01 一 ");
}
return currentfield;
}
/**
* this method initializes datepanel
*
* @return javax.swing.jpanel
*/
private jpanel getdatepanel（) {
if （datepanel == null) {
datepanel = new jpanel（);
datepanel.setlayout（new borderlayout（));
datepanel.add（getjscrollpane（), borderlayout.center);
}
return datepanel;
}
/**
* this method initializes jscrollpane
*
* @return javax.swing.jscrollpane
*/
private jscrollpane getjscrollpane（) {
if （jscrollpane == null) {
jscrollpane = new jscrollpane（);
jscrollpane.setviewportview（getdatetable（));
}
return jscrollpane;
}
/**
* this method initializes datetable
*
* @return javax.swing.jtable
*/
private jtable getdatetable（) {
if （datetable == null) {
datetable = new jtable（);
int year = 2007;
int month = 9;
datetable.setmodel（new datetablemodel（year,month));
}
return datetable;
}
/**
* 功能：万年历主函数
*/
public static void main（string[] args) {
swingutilities.invokelater（new runnable（) {
public void run（) {
calendartest thisclass = new calendartest（);
thisclass.setdefaultcloseoperation（jframe.exit_on_close);
thisclass.setvisible（true);
}
});
}
/**
* this is the default constructor
*/
public calendartest（) {
super（);
initialize（);
}
/**
* this method initializes this
*
* @return void
*/
private void initialize（) {
this.setsize（348, 229);
this.setcontentpane（getjcontentpane（));
this.settitle（ "自制万年历 ");
// setdatedisplay（2007, 9);
}
/**
* this method initializes jcontentpane
*
* @return javax.swing.jpanel
*/
private jpanel getjcontentpane（) {
if （jcontentpane == null) {
jcontentpane = new jpanel（);
jcontentpane.setlayout（new borderlayout（));
jcontentpane.add（getdatechooserpanel（), borderlayout.north);
jcontentpane.add（getdatedisplaypanel（), borderlayout.center);
}
return jcontentpane;
}
}
（1） datetablemodel.java ：
package forum;
import java.util.calendar;
import javax.swing.table.abstracttablemodel;
public class datetablemodel extends abstracttablemodel {
private static final long serialversionuid = -677920339189618690l;
int n = 1;
int day = 0;
static int[] daysarray = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31};
static string[] weekarray = { "日 ", "一 ", "二 ", "三 ", "四 ", "五 ", "六 "};
/**
* 选择的年份和月份所对应的天数
*/
private int days = 0;
/**
* 当前选择的年份和月份1号对应的星期
*/
private int week = 0;
public datetablemodel（int year, int month) {
days = getdaysofmonth（year, month);
week = getdayofweek（year, month);
system.out.println（week + "------- " + days);
}
public int getcolumncount（) {
return 7;
}
public int getrowcount（) {
return 6;
}
public object getvalueat（int rowindex, int columnindex) {
object value = null;
if （n < week && n <= days) {
value = " ";
} else if （n > = week && day < days) {
value = daysarray[day];
day = day+1;
}else if（n> days){
value = " ";
}
n = n + 1;
return value;
}
public boolean iscelleditable（int rowindex,int columnindex){
return false;
}
public string getcolumnname（int columnindex){
string name = " ";
name = weekarray[columnindex];
return name;
}
private int getdayofweek（int year, int month) {
int week = 0;
calendar cal = calendar.getinstance（);
cal.set（year, month - 1, 1);
week = cal.get（calendar.day_of_week);
system.out.println（week + "------- " + cal.get（calendar.year) + "----- "
+ cal.get（calendar.month) + "---- "
+ cal.get（calendar.day_of_month) + "--- " + days);
return week;
}
/**
* 获取当前选择年份和月份所对应的天数
*/
private int getdaysofmonth（int year, int month) {
int days = 30;
boolean leap = false;
if （（year % 4 == 0 & year % 100 != 0) ¦ ¦ （year % 400 == 0)) {
leap = true;
}
switch （month) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12: {
days = 31;
break;
}
case 4:
case 6:
case 9:
case 11: {
break;
}
case 2: {
if （leap) {
days = 29;
break;
} else {
days = 28;
break;
}
}
}
return days;
}
}
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