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package com.test;


import java.text.DateFormat;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

public class TimeTest {
//ÓÃÀ´È«¾Ö¿ØÖÆ ÉÏÒ»ÖÜ£¬±¾ÖÜ£¬ÏÂÒ»ÖܵÄÖÜÊý±ä»¯
private int weeks = 0 ;
private int MaxDate; //Ò»ÔÂ×î´óÌìÊý
private int MaxYear; //Ò»Äê×î´óÌìÊý


/**
* @param args
*/
public static void main(String[] args) {
TimeTest tt = new TimeTest();
System.out.println( "»ñÈ¡µ±ÌìÈÕÆÚ:" +tt.getNowTime( "yyyy-MM-dd" ));
System.out.println( "»ñÈ¡±¾ÖÜÒ»ÈÕÆÚ:" +tt.getMondayOFWeek());
System.out.println( "»ñÈ¡±¾ÖÜÈÕµÄÈÕÆÚ~:" +tt.getCurrentWeekday());
System.out.println( "»ñÈ¡ÉÏÖÜÒ»ÈÕÆÚ:" +tt.getPreviousWeekday());
System.out.println( "»ñÈ¡ÉÏÖÜÈÕÈÕÆÚ:" +tt.getPreviousWeekSunday());
System.out.println( "»ñÈ¡ÏÂÖÜÒ»ÈÕÆÚ:" +tt.getNextMonday());
System.out.println( "»ñÈ¡ÏÂÖÜÈÕÈÕÆÚ:" +tt.getNextSunday());
System.out.println( "»ñµÃÏàÓ¦ÖܵÄÖÜÁùµÄÈÕÆÚ:" +tt.getNowTime( "yyyy-MM-dd" ));
System.out.println( "»ñÈ¡±¾ÔµÚÒ»ÌìÈÕÆÚ:" +tt.getFirstDayOfMonth());
System.out.println( "»ñÈ¡±¾ÔÂ×îºóÒ»ÌìÈÕÆÚ:" +tt.getDefaultDay());
System.out.println( "»ñÈ¡ÉÏÔµÚÒ»ÌìÈÕÆÚ:" +tt.getPreviousMonthFirst());
System.out.println( "»ñÈ¡ÉÏÔÂ×îºóÒ»ÌìµÄÈÕÆÚ:" +tt.getPreviousMonthEnd());
System.out.println( "»ñÈ¡ÏÂÔµÚÒ»ÌìÈÕÆÚ:" +tt.getNextMonthFirst());
System.out.println( "»ñÈ¡ÏÂÔÂ×îºóÒ»ÌìÈÕÆÚ:" +tt.getNextMonthEnd());
System.out.println( "»ñÈ¡±¾ÄêµÄµÚÒ»ÌìÈÕÆÚ:" +tt.getCurrentYearFirst());
System.out.println( "»ñÈ¡±¾Äê×îºóÒ»ÌìÈÕÆÚ:" +tt.getCurrentYearEnd());
System.out.println( "»ñȡȥÄêµÄµÚÒ»ÌìÈÕÆÚ:"


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java gui Ñ¡ÔñÎļþ

import java.io.File;
import java.io.IOException;
import java.util.Scanner;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JTextArea;
public class DisplayFile {
       /**
        * @param args
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