Java: Error parse date's string to date object

Question

I try to convert string to date on java. I read and try the example from this website "Java Date and Calendar examples" but I still cannot compile and run it.

This is my code.

package javaapplication5;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

public class JavaApplication5 {   

    public static void main(String[] args) {
        SimpleDateFormat sdf = new SimpleDateFormat("dd-M-yyyy hh:mm:ss");
        String dateInString = "31-08-1982 10:20:56";
        Date date = sdf.parse(dateInString);
        System.out.println(date);
    }

}

And I got this error.

Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - unreported exception java.text.ParseException; must be caught or declared to be thrown

What I missing or do it wrong? Thank you for help.

Yes error is so clear, either you need to put your `sdf.parse()` inside a try catch or use throws clause. — Pradeep Simha, Sep 07 '16 at 14:03

vsminkov · Accepted Answer · 2016-09-07T14:11:09.233

1

The problem is that java.text.ParseException is checked exception

A checked exception is a type of exception that must be either caught or declared in the method in which it is thrown

So... You might declare it in throws list

public static void main(String[] args) throws ParseException {
    /* ... */
}

Or should properly handle it it

public static void main(String[] args) {
    try {
        Date date = sdf.parse(dateInString);
    } catch (ParseException e) {
        // do proper thing here like try another
        // format or log/rethrow/wrap exception
    }
}

edited Sep 07 '16 at 14:11

answered Sep 07 '16 at 14:02

vsminkov

10,912
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Thanks for including both ways it can be done. It's also good that you quickly explained checked exceptions since it reveals the cause of the compilation error. – byxor Sep 07 '16 at 14:10
1

@BrandonIbbotson thanks to you :) – vsminkov Sep 07 '16 at 14:11
1

@BrandonIbbotson Well flagging as duplicate would be best, but who would say "no" to some easily farmed reputation, right? :P – Tom Sep 07 '16 at 14:13

mcemilg · Answer 2 · 2016-09-07T14:11:09.150

0

Just add your code in try catch block.

try {
 //parse code
}
catch (ParseException e) {
 //handling exceptions
}

edited Sep 07 '16 at 14:11

answered Sep 07 '16 at 14:05

mcemilg

976
1
11
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score 0 · Answer 3 · answered Sep 07 '16 at 14:05

0

Try to put all your code in a try/ catch block

try{
     // your code here.
 }catch(Exception e){
     e.printStackTrace();
 }

answered Sep 07 '16 at 14:05

Ray Lloy

171
12

2

This will work, but it will catch all Exceptions which is not a good idea. – byxor Sep 07 '16 at 14:06
Yes if you want to catch parsing exception you can replace "Exception" by "ParseException" in catch clause. – Ray Lloy Sep 07 '16 at 14:09

Arnav Borborah · Answer 4 · 2016-09-07T14:24:28.620

0

Add a try-catch block like this:

try
{
    //...Code.... Mainly below:
    Date date = sdf.parse(dateInString);
} catch (ParseException e) 
  //Or any superclass, such as RuntimeException, 
  //although use superclass ONLY to be generic, not otherwise, such as 
  //if you want to handle all exceptions the same way.
{
    //...Handler Code...
}

edited Sep 07 '16 at 14:24

answered Sep 07 '16 at 14:08

Arnav Borborah

11,357
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Edited answer @Tom – Arnav Borborah Sep 07 '16 at 14:14
1

@Tom edited again – Arnav Borborah Sep 07 '16 at 14:24

bhanu avinash · Answer 5 · 2016-09-07T14:15:09.583

0

  SimpleDateFormat sdf = new SimpleDateFormat("dd-M-yyyy hh:mm:ss");
            String dateInString = "31-08-1982 10:20:56";
            Date date = null;
            try {
                date = sdf.parse(dateInString);
            } catch (ParseException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            System.out.println(date);

edited Sep 07 '16 at 14:15

answered Sep 07 '16 at 14:08

bhanu avinash

484
2
16

Explain your answer – Tom Sep 07 '16 at 14:10

Java: Error parse date's string to date object

5 Answers5