本文实例为大家分享了Java实现窗体程序显示日历表的具体代码，供大家参考，具体内容如下
实训要求:
1.简单实现日历功能，能查看前月后月的日历功能。
2.使用JTable 组件显示日历。
参考结果：
代码：
CalendaBean.java
import java.util.Calendar;
public class CalendaBean {
Test test;
String[] day;
int year = 2017, month = 7;
public void setYear(int year) {
this.year = year;
}
public void setMonth(int month) {
this.month = month;
}
public int Last() {
month--;
if (month == 0) {
month = 12;
year--;
}
return month;
}
public int Next() {
month++;
if (month == 13) {
month = 1;
year++;
}
return month;
}
public String[] getCalendar() {
String[] a = new String[42];
Calendar rili = Calendar.getInstance();
rili.set(year, month - 1, 1);
int weekDay = rili.get(Calendar.DAY_OF_WEEK) - 1;
int day = 0;
if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8
|| month == 10 || month == 12) {
day = 31;
}
if (month == 4 || month == 6 || month == 9 || month == 11) {
day = 30;
}
if (month == 2) {
if ((year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0))
day = 29;
else
day = 28;
}
for (int i = 0; i < weekDay; i++)
a[i] = " ";
for (int i = weekDay, n = 1; i < weekDay + day; i++) {
a[i] = String.valueOf(n);
n++;
}
for (int i = weekDay + day; i < a.length; i++)
a[i] = " ";
return a;
}
}Change.java
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JLabel;
public class Change implements ActionListener {
CalendaBean c;
JLabel now;
Test test;
public void actionPerformed(ActionEvent e) {
String str = e.getActionCommand();
if (str.equals("lastmonth")) {
c.Last();
} else if (str.equals("nextmonth")) {
c.Next();
}
test.Rili();
now.setText("日历 :" + c.year + "年" + c.month + "月");
}
}Test.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
public class Test extends JFrame {
JButton bx, by;
CalendaBean cb = new CalendaBean();
Change change = new Change();
DefaultTableModel model;
String[] label;
JLabel now;
JTable table = new JTable();
JScrollPane pane = new JScrollPane();
Object[] columnNames = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
Object[][] rowData = { { null, null, null, null, null, null, null },
{ null, null, null, null, null, null, null },
{ null, null, null, null, null, null, null },
{ null, null, null, null, null, null, null },
{ null, null, null, null, null, null, null },
{ null, null, null, null, null, null, null }, };
public static void main(String[] args) {
Test frame = new Test();
frame.setSize(500, 400);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setTitle("日历");
frame.setVisible(true);
}
public Test() {
change.test = this;
int year, month;
setLayout(new BorderLayout());
JPanel pNorth = new JPanel();
cb = new CalendaBean();
change.c = cb;
bx = new JButton("上月");
by = new JButton("下月");
bx.setActionCommand("lastmonth");
by.setActionCommand("nextmonth");
bx.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
change.actionPerformed(e);
}
});
by.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
change.actionPerformed(e);
}
});
pNorth.add(bx);
pNorth.add(by);
Rili();
model = new DefaultTableModel(rowData, columnNames);
table = new JTable(model);
table.setRowHeight(38);
table.getTableHeader().setResizingAllowed(false);
pane = new JScrollPane(table);
JPanel pSouth = new JPanel();
now = new JLabel();
now.setText("日历:" + cb.year + "年" + cb.month + "月");
change.now = now;
pSouth.add(now);
add(pNorth, BorderLayout.NORTH);
add(pane, BorderLayout.CENTER);
add(pSouth, BorderLayout.SOUTH);
}
public void Rili() {
String[] a = cb.getCalendar();
int x = 0;
if (model != null) {
model.setRowCount(0);
}
for (int i = 0; i < 6; i++) {
for (int j = 0; j < 7; j++) {
rowData[i][j] = a[x];
x++;
}
if (model != null)
model.addRow(rowData[i]);
}
}
}运行结果
说明：这个程序与前几天上传的日历显示表差不多，只是改了中间的组件，原本以为是很简单的事，结果做的时候才发现其中的难点，初学Java还有很多不懂的地方，幸好有大神的解答，自己还有很多需要学习的地方。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程网。
