将字符串转换为日期 Java
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Cast string to date Java
提问by user195257
Any ideas why this isnt working?
任何想法为什么这不起作用？
DateFormat df = new SimpleDateFormat("dd/mm/yyyy");
Date date1 = null, date2 = null;
String start, finish;
System.out.println("Please enter a start date:");
while(date1 == null){
try{
start = scan.next();
date1 = (Date) df.parse(start);
}catch(ParseException e){
System.out.println("Please enter a valid date!");
}
}
Im getting a classCastException
我得到一个 classCastException
Exception in thread "main" java.lang.ClassCastException: java.util.Date cannot be cast to java.sql.Date
I can't see the problem?
我看不出问题？
回答by WhiteFang34
You're importing java.sql.Dateinstead of java.util.Date.
您正在导入java.sql.Date而不是java.util.Date.
回答by andersoj
You have
你有
import java.sql.Date
somewhere up top. Gotta be careful about the two Dateclasses; they aren't interchangeable.
某处顶部。必须小心这两个Date类；它们不可互换。
回答by Kevin
Hello try to use java.util.Date instead just Date:
你好，尝试使用 java.util.Date 而不是 Date：
Java.util.DateFormat df = new SimpleDateFormat("dd/mm/yyyy");
Java.util.Date date1 = null, date2 = null;
String start, finish;
System.out.println("Please enter a start date:");
while(date1 == null){
try{
start = scan.next();
date1 = (Java.util.Date) df.parse(start);
}catch(ParseException e){
System.out.println("Please enter a valid date!");
}
}
