JAVA学习笔记-日历程序
package myCalendar;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Scanner;
/**
* 可视化日历
* @author iwang
*
*/
public class myCode {
public static void main(String[] args) {
System.out.println("请输入日期:(按照格式:2030-1-1)");
Scanner str = new Scanner(System.in);
String temp = str.nextLine();
//String temp = "2016-11-13";
DateFormat format = new SimpleDateFormat("yyyy-MM-dd");
try {
Date date = format.parse(temp);
Calendar calendar = new GregorianCalendar();
calendar.setTime(date);
int day = calendar.get(Calendar.DATE);
calendar.set(Calendar.DATE, 1);
//System.out.println(calendar.get(Calendar.DAY_OF_WEEK)); //一号是周几?
//int kong = calendar.get(Calendar.DAY_OF_WEEK)-1;
//System.out.println(calendar.getActualMaximum(Calendar.DATE)); //最后一天为多少号?
int maxDate = calendar.getActualMaximum(Calendar.DATE);
System.out.println("日\t一\t二\t三\t四\t五\t六\t");
for(int k=0;k<(calendar.get(Calendar.DAY_OF_WEEK)-1);k++){
System.out.print(" "+"\t");
}
//System.out.println("日\t一\t二\t三\t四\t五\t六\t");
//int j = 0;
for(int i=1;i<=maxDate;i++){
if(i!=day){
System.out.print(i+"\t");
}else
if(i==day){
System.out.print("["+i+"]\t");
}
//System.out.print(i+"\t");
//j++;
int w = calendar.get(Calendar.DAY_OF_WEEK);
if(/*j%7==0*/w == Calendar.SATURDAY){
System.out.println();
}
calendar.add(Calendar.DATE, 1);
}
} catch (ParseException e) {
e.printStackTrace();
}
}
}