topic Re: Talend throwing "Exception in thread "main" java.lang.Error: Unresolved compilation problem:" in Talend Studio

Talend throwing "Exception in thread "main" java.lang.Error: Unresolved compilation problem:"

Anonymous — Thu, 02 Apr 2020 02:20:07 GMT

Hi,

I realize this thread was previously opened and apparently solved at this url:

https://community.talend.com/t5/Design-and-Development/Talend-throwing-quot-Exception-in-thread-quot-main-quot-java/td-p/44996

However, I still get this error whenever I test an expression in the Expression Builder within a tMap. I am relatively new to Talend and even greener in Java, so this test utility would be very useful if it worked.

Here is a screenshot of the error:

The columns [row16.discountUnit] and [row16.priceUnit] are both BigDecimals and the expression seems right since I copied it of exactly from a valid source.

In Talend at Window / Preferences / Java / Installed JREs is

JRE home: C:\Program Files\Java\jre1.8.0_241

JRE name: jre1.8.0_241

Default VM arguments: empty

My Talend Open Studio for Data Integration's version is 7.2.1. Any suggestions on how to fix this please?

Re: Talend throwing "Exception in thread "main" java.lang.Error: Unresolved compilation problem:"

manodwhb — Thu, 02 Apr 2020 02:59:01 GMT

can you go to code and check for java -version?

Re: Talend throwing "Exception in thread "main" java.lang.Error: Unresolved compilation problem:"

Anonymous — Thu, 02 Apr 2020 03:25:00 GMT

Hi Manohar,

Sure! Here's a screenshot:

Re: Talend throwing "Exception in thread "main" java.lang.Error: Unresolved compilation problem:"

manodwhb — Thu, 02 Apr 2020 03:58:37 GMT

You have correct Java version and as part of testing with out that logic is it working means straight mapping?

Re: Talend throwing "Exception in thread "main" java.lang.Error: Unresolved compilation problem:"

Anonymous — Thu, 02 Apr 2020 04:31:58 GMT

No, you are right. My tMap seems not to be working properly... I don't know if it's related. I get the following error codes:

I don't get why my tInputDelimited file [POS_histo_orderDetails_OB] isn't transferring any rows. That tUnite_1 is working fine when run alone:

Re: Talend throwing "Exception in thread "main" java.lang.Error: Unresolved compilation problem:"

manodwhb — Thu, 02 Apr 2020 07:58:49 GMT

Understand that if you are writing some expression in tmap without handling null values then you will get null pointer exception.

Something like this.for the below col column you need to check for null validation of you need to re write expression below way to over come that null pointer exception.

Row1.col.equals("Apple")?"App":""

("Apple").equals(Row1.col)?"App":""