Java实现窗体程序显示日历表

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。

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