package org.fun.classdemo;
import java.util.Calendar;
import java.util.GregorianCalendar;
public class DateTime {
private Calendar calendar = new GregorianCalendar(); // 实例化Calendar对象
public String getDate() {// 2014-07-30
StringBuffer buf = new StringBuffer();
buf.append(calendar.get(Calendar.YEAR)).append("-");
buf.append(this.addZero((calendar.get(Calendar.MONTH) + 1), 2)).append(
"-");
buf.append(this.addZero(calendar.get(Calendar.DAY_OF_MONTH), 2));
return buf.toString();
}
public String getDateTime() {// 2014-07-30 10:19:34.123
StringBuffer buf = new StringBuffer();
buf.append(this.getDate()).append(" ");
buf.append(this.addZero(calendar.get(Calendar.HOUR_OF_DAY), 2)).append(
":");
buf.append(this.addZero(calendar.get(Calendar.MINUTE), 2)).append(":");
buf.append(this.addZero(calendar.get(Calendar.SECOND), 2)).append(".");
buf.append(this.addZero(calendar.get(Calendar.MILLISECOND), 3));
return buf.toString();
}
public String getDateComplete() {// 2014年07月30日
StringBuffer buf = new StringBuffer();
buf.append(calendar.get(Calendar.YEAR)).append("年");
buf.append(this.addZero((calendar.get(Calendar.MONTH) + 1), 2)).append(
"月");
buf.append(this.addZero(calendar.get(Calendar.DAY_OF_MONTH), 2))
.append("日");
return buf.toString();
}
public String getDateTimeComplete() {// 2014年07月30日10时19分34秒123毫秒
StringBuffer buf = new StringBuffer();
buf.append(this.getDateComplete());
buf.append(this.addZero(calendar.get(Calendar.HOUR_OF_DAY), 2)).append(
"时");
buf.append(this.addZero(calendar.get(Calendar.MINUTE), 2)).append("分");
buf.append(this.addZero(calendar.get(Calendar.SECOND), 2)).append("秒");
buf.append(this.addZero(calendar.get(Calendar.MILLISECOND), 3)).append(
"毫秒");
return buf.toString();
}
private String addZero(int temp, int len) {
StringBuffer str = new StringBuffer();
str.append(temp);// 加入数字
while (str.length() < len) {
str.insert(0, 0); // 在第一个位置加上字母0
}
return str.toString();
}
public static void main(String args[]) {
System.out.println(new DateTime().getDate());
System.out.println(new DateTime().getDateTime());
System.out.println(new DateTime().getDateComplete());
System.out.println(new DateTime().getDateTimeComplete());
}
}
JavaLearning:日期操作类,布布扣,bubuko.com
JavaLearning:日期操作类