Java编写实现窗体程序显示日历

本文实例为大家分享了java实现窗体程序显示日历的具体代码，供大家参考，具体内容如下

实训要求：

代码：

Test类：

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class Test extends JFrame {

JButton week1, week2, week3, week4, week5, week6, week7, next, pro;

CalendaBean cb = new CalendaBean();

JLabel[] label;

JLabel now;

public static void main(String[] args) {

Test frame = new Test();

frame.setBounds(650,300,550,550);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setTitle("日历");

frame.setVisible(true);

}

public Test() {

int year, month;

setLayout(new BorderLayout());

JPanzzYagkhel pNorth = new JPanel();

cb = new CalendaBean();

cb.setYear(2017);

cb.setMonth(11);

String[] a = cb.getCalendar();

next = new JButton("上月");

pro = new JButton("下月");

next.setActionCommand("lastmonth");

pro.setActionCommand("nextmonth");

next.addActionListener(new ActionListener() {

publzzYagkhic void actionPerformed(ActionEvent e) {

cb.actionPerformed(e);

}

});

pro.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

cb.actionPerformed(e);

}

});

pNorth.add(next);

pNorth.add(pro);

add(pNorth, BorderLayout.NORTH);

GridLayout grid = new GridLayout(8, 7);

JPanel pCenter = new JPanel();

week1 = new JButton("日");

week2 = new JButton("一");

week3 = new JButton("二");

week4 = new JButton("三");

week5 = new JButton("四");

week6 = new JButton("五");

week7 = new JButton("六");

pCenter.add(week1);

pCenter.add(week2);

pCenter.add(week3);

pCenter.add(week4);

pCenter.add(week5);

pCenter.add(week6);

pCenter.add(week7);

label = new JLabel[42];

for (int i = 0; i < 42; i++) {

label[i] = new JLabel();

pCenter.add(label[i]);

}

cb.label = this.label;

for (int i = 0; i < a.length; i++) {

if (i % 7 == 0) {

label[i].setText("");

}

label[i].setText(" "+a[i]);

}

pCenter.setLayout(grid);

add(pCenter, BorderLayout.CENTER);

JPanel pSouth = new JPanel();

now = new JLabel();

now.setText("日历:" + cb.year + "年" + cb.month + "月");

cb.now = now;

pSouth.add(now);

add(pSouth, BorderLayout.SOUTH);

}

}

CalendaBean类：

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.util.Calendar;

import javax.swing.*;

public class CalendaBean implements ActionListener {

JLabel[] label;

JLabel now;

String[] day;

int year = 0, month = 0;

public void setYear(int year) {

this.year = year;

}

public void setMonth(int month) {

this.month = month;

}

public void actionPerformed(ActionEvent e) {

String str = e.getActionCommand();

if (str.equals("lastmonth")) {

month--;

if (month == 0) {

month = 12;

year--;

}

}

else if (str.equals("nextmonth")) {

month++;

if (month == 13) {

month = 1;

year++;

}

}

now.setText("日历:" + year + "年" + month + "月");

String[] a = getCalendar();

for (int i = 0; i < a.length; i++) {

if (i % 7 == 0) {

label[i].setText("");

}

label[i].setText(" "+a[i]);

}

}

public String[] getCalendar() {

String[] a = new String[42];

Calendar rili = Calendar.getzzYagkhInstance();

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;

}

}

运行结果:

小结：

学习了Calendar类，其他的，界面的话顺着来就好。

版权声明：本文内容由网络用户投稿，版权归原作者所有，本站不拥有其著作权，亦不承担相应法律责任。如果您发现本站中有涉嫌抄袭或描述失实的内容，请联系我们jiasou666@gmail.com 处理，核实后本网站将在24小时内删除侵权内容。