Exception in thread main java lang IllegalArgumentExceptio
阿新 • • 發佈:2019-02-14
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2、錯誤原因
1、錯誤描述
Exception in thread "main" java.lang.IllegalArgumentException: Cannot format given Object as a Date at java.text.DateFormat.format(DateFormat.java:301) at java.text.Format.format(Format.java:157) at com.you.util.DateBefore.getMonthBefore(DateBefore.java:24) at com.you.util.DateBefore.main(DateBefore.java:33)
2、錯誤原因
/**
*
*/
package com.you.util;
import java.text.SimpleDateFormat;
import java.util.Calendar;
/**
* @author YouHaidong
*
*/
public class DateBefore
{
/**
*
* @return
*/
public static String getMonthBefore(String subStr)
{
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.MONTH, -12 );
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMM");
subStr = sdf.format(calendar);
return subStr;
}
/**
* @param args
*/
public static void main(String[] args)
{
String date = getMonthBefore("2014-02");
System.out.println(date);
}
}
日期格式轉化異常
3、解決辦法
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Exception in thread main java lang IllegalArgumentExceptio