public CalenderFrame(){ cale = new CalendarBean();
//添加年份列表 yearList = new JComboBox(); for(int k = 0 ; k < item.length;k++) yearList.addItem(item[k]); yearList.addItemListener(this);
//添加月份树 root = new DefaultMutableTreeNode(item[0]); tree = new JTree(root); add(new JScrollPane(tree) , BorderLayout.WEST); tree.addTreeSelectionListener(this);
//设置年月及该月日历 cale.setYear(year); cale.setMonth(month); rili = cale.getCalendar(); table = new JTable(rili,name);
//添加到窗口 scrollTree = new JScrollPane(tree); scrollTable = new JScrollPane(table); split = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,true,scrollTree,scrollTable); add(yearList,BorderLayout.NORTH); add(split , BorderLayout.CENTER); updateYear(year);
//更新年份及月份树 private void updateYear(int year){ cale.setYear(year); root = new DefaultMutableTreeNode(String.valueOf(year));
DefaultMutableTreeNode months[] = new DefaultMutableTreeNode[13]; for(int i = 0 ; i <12;i++){ months[i] = new DefaultMutableTreeNode("" + (i+1)); root.add(months[i]); }
split.remove(scrollTree); tree = new JTree(root); tree.addTreeSelectionListener(this); scrollTree = new JScrollPane(tree); split.add(scrollTree , JSplitPane.LEFT); split.setDividerLocation(0.5); validate(); }
//年份列表的监听器 public void itemStateChanged(ItemEvent e){ String yearStr = yearList.getSelectedItem().toString().trim(); int year = Integer.parseInt(yearStr); updateYear(year); }
public CalenderFrame(){ cale = new CalendarBean();
//添加年份列表 yearList = new JComboBox(); for(int k = 0 ; k < item.length;k++) yearList.addItem(item[k]); yearList.addItemListener(this);
//添加月份树 root = new DefaultMutableTreeNode(item[0]); tree = new JTree(root); add(new JScrollPane(tree) , BorderLayout.WEST); tree.addTreeSelectionListener(this);
//设置年月及该月日历 cale.setYear(year); cale.setMonth(month); rili = cale.getCalendar(); table = new JTable(rili,name);
//添加到窗口 scrollTree = new JScrollPane(tree); scrollTable = new JScrollPane(table); split = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,true,scrollTree,scrollTable); add(yearList,BorderLayout.NORTH); add(split , BorderLayout.CENTER); updateYear(year);
//更新年份及月份树 private void updateYear(int year){ cale.setYear(year); root = new DefaultMutableTreeNode(String.valueOf(year));
DefaultMutableTreeNode months[] = new DefaultMutableTreeNode[13]; for(int i = 0 ; i <12;i++){ months[i] = new DefaultMutableTreeNode("" + (i+1)); root.add(months[i]); }
split.remove(scrollTree); tree = new JTree(root); tree.addTreeSelectionListener(this); scrollTree = new JScrollPane(tree); split.add(scrollTree , JSplitPane.LEFT); split.setDividerLocation(0.5); validate(); }
//年份列表的监听器 public void itemStateChanged(ItemEvent e){ String yearStr = yearList.getSelectedItem().toString().trim(); int year = Integer.parseInt(yearStr); updateYear(year); }
通过删除JTable组件,然后再重新申请JTable对象并添加,来刷新JTable中的值
代码如下:/* File CalendarBean.java
* author:***
* Date:2007-12-8 23:37
* 返回某年某月的日历的字符串数组
*/
import java.util.Calendar;
public class CalendarBean{
int year = 2007,month = 0;
private int monthDays[] = {31,28,31,30,31,30,31,31,30,31,30,31};
//设置年份
public void setYear(int year){
this.year = year;
}
//获取年份
public int getYear(){
return year;
}
//设置月份
public void setMonth(int month){
this.month = month > 0 ? month : 1;
}
//获取月份
public int getMonth(){
return month;
}
//判断是否为闰年
private static boolean isLeap(int year){
return ((year % 4 == 0) && (year %100 == 0)) || (year % 400 == 0);
}
//获得当前年月的日历所组成字符串数组
public String[][] getCalendar(){
String data[][] = new String[6][7];
Calendar cale = Calendar.getInstance();
cale.set(year, month -1 ,1); //该月1号是星期几
int weekDay = cale.get(Calendar.DAY_OF_WEEK) - 1;
//该月的天数
int day = monthDays[month - 1];
if(month == 2 && isLeap(year)) day = 29;
int nextDay = 1;
//添加字符串数组
for(int k = 0 ; k < 6; k++){
if( k == 0)
for(int j = weekDay; j < 7;j++){
data[k][j] = " " + nextDay;
nextDay++;
}
else
for(int j = 0 ; j < 7 && nextDay <= day; j++){
data[k][j] = " " + nextDay;
nextDay++;
}
}
return data;
}
}/* File CalenderFrame.java
* author:***
* Date:2007-12-8 23:37
* 一个简单的日历
*/
import javax.swing.*;
import javax.swing.tree.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;public class CalenderFrame extends JFrame implements ItemListener, TreeSelectionListener{
JTable table;
JTree tree = null;
DefaultMutableTreeNode root;
Object name[] = {"星期日","星期一","星期二","星期三","星期四","星期五","星期六"};
JComboBox yearList;
CalendarBean cale;
String rili[][];
String item[] = {"2006","2007","2008","2009","2010"};
JSplitPane split;
int year = 2006;
int month = 0;
JScrollPane scrollTree,scrollTable;
public CalenderFrame(){
cale = new CalendarBean();
//添加年份列表
yearList = new JComboBox();
for(int k = 0 ; k < item.length;k++)
yearList.addItem(item[k]);
yearList.addItemListener(this);
//添加月份树
root = new DefaultMutableTreeNode(item[0]);
tree = new JTree(root);
add(new JScrollPane(tree) , BorderLayout.WEST);
tree.addTreeSelectionListener(this);
//设置年月及该月日历
cale.setYear(year);
cale.setMonth(month);
rili = cale.getCalendar();
table = new JTable(rili,name);
//添加到窗口
scrollTree = new JScrollPane(tree);
scrollTable = new JScrollPane(table);
split = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,true,scrollTree,scrollTable);
add(yearList,BorderLayout.NORTH);
add(split , BorderLayout.CENTER);
updateYear(year);
//设置窗口属性
setSize(580,350);
setVisible(true);
split.setDividerLocation(0.5);
validate();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
//更新年份及月份树
private void updateYear(int year){
cale.setYear(year);
root = new DefaultMutableTreeNode(String.valueOf(year));
DefaultMutableTreeNode months[] = new DefaultMutableTreeNode[13];
for(int i = 0 ; i <12;i++){
months[i] = new DefaultMutableTreeNode("" + (i+1));
root.add(months[i]);
}
split.remove(scrollTree);
tree = new JTree(root);
tree.addTreeSelectionListener(this);
scrollTree = new JScrollPane(tree);
split.add(scrollTree , JSplitPane.LEFT);
split.setDividerLocation(0.5);
validate();
}
//年份列表的监听器
public void itemStateChanged(ItemEvent e){
String yearStr = yearList.getSelectedItem().toString().trim();
int year = Integer.parseInt(yearStr); updateYear(year);
}
//树结点的监听器
public void valueChanged(TreeSelectionEvent e){
DefaultMutableTreeNode monthNode = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
if(monthNode.isLeaf()){
month = Integer.parseInt(monthNode.toString().trim());
cale.setMonth(month);
rili = cale.getCalendar();
split.remove(scrollTable);
table = new JTable(rili,name);
scrollTable = new JScrollPane(table);
split.add(scrollTable, JSplitPane.RIGHT);
split.setDividerLocation(0.5);
validate();
}
}
public static void main(String args[]){
new CalenderFrame();
}
}
/* File CalenderFrame.java
* author:***
* Date:2007-12-8 23:37
* 一个简单的日历
*/
import javax.swing.*;
import javax.swing.tree.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;public class CalenderFrame extends JFrame implements ItemListener, TreeSelectionListener{
JTable table;
JTree tree = null;
DefaultMutableTreeNode root;
Object name[] = {"星期日","星期一","星期二","星期三","星期四","星期五","星期六"};
JComboBox yearList;
CalendarBean cale;
String rili[][];
String item[] = {"2006","2007","2008","2009","2010"};
JSplitPane split;
int year = 2006;
int month = 0;
JScrollPane scrollTree,scrollTable;
public CalenderFrame(){
cale = new CalendarBean();
//添加年份列表
yearList = new JComboBox();
for(int k = 0 ; k < item.length;k++)
yearList.addItem(item[k]);
yearList.addItemListener(this);
//添加月份树
root = new DefaultMutableTreeNode(item[0]);
tree = new JTree(root);
add(new JScrollPane(tree) , BorderLayout.WEST);
tree.addTreeSelectionListener(this);
//设置年月及该月日历
cale.setYear(year);
cale.setMonth(month);
rili = cale.getCalendar();
table = new JTable(rili,name);
//添加到窗口
scrollTree = new JScrollPane(tree);
scrollTable = new JScrollPane(table);
split = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,true,scrollTree,scrollTable);
add(yearList,BorderLayout.NORTH);
add(split , BorderLayout.CENTER);
updateYear(year);
//设置窗口属性
setSize(580,350);
setVisible(true);
split.setDividerLocation(0.5);
validate();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
//更新年份及月份树
private void updateYear(int year){
cale.setYear(year);
root = new DefaultMutableTreeNode(String.valueOf(year));
DefaultMutableTreeNode months[] = new DefaultMutableTreeNode[13];
for(int i = 0 ; i <12;i++){
months[i] = new DefaultMutableTreeNode("" + (i+1));
root.add(months[i]);
}
split.remove(scrollTree);
tree = new JTree(root);
tree.addTreeSelectionListener(this);
scrollTree = new JScrollPane(tree);
split.add(scrollTree , JSplitPane.LEFT);
split.setDividerLocation(0.5);
validate();
}
//年份列表的监听器
public void itemStateChanged(ItemEvent e){
String yearStr = yearList.getSelectedItem().toString().trim();
int year = Integer.parseInt(yearStr); updateYear(year);
}
//树结点的监听器
public void valueChanged(TreeSelectionEvent e){
DefaultMutableTreeNode monthNode = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
if(monthNode.isLeaf()){
month = Integer.parseInt(monthNode.toString().trim());
cale.setMonth(month);
rili = cale.getCalendar();
split.remove(scrollTable);
table = new JTable(rili,name);
scrollTable = new JScrollPane(table);
split.add(scrollTable, JSplitPane.RIGHT);
split.setDividerLocation(0.5);
validate();
}
}
public static void main(String args[]){
new CalenderFrame();
}
}