处理日期格式,运行main函数即可:
package testutil; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; /** * Created by wangpeng on 2018/2/26. */ public class DateFormat { public static void main(String[] args) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); SimpleDateFormat sdf1 = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss"); SimpleDateFormat sdf2 = new SimpleDateFormat("MM/dd/yyyy hh:mm:ss"); Date date = new Date(); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); calendar.add(Calendar.DAY_OF_MONTH, -1); date = calendar.getTime(); System.out.println(sdf.format(date)); System.out.println(sdf1.format(date)); System.out.println(sdf2.format(date)); } }