How to set a column size in sqldeveloper?

Like in subject.. I want to set standard output in sqldeveloper, but this command doesn't work:
column object_name Heading 'name' format a40
Someone know where it should be set?
I think about "Script output" of course!! Not any graphical one ;)
Message was edited by:
user584507

The statement column is not supported in SQL Developer.
See Help > SQL Developer Concepts and Usage > Using the SQL Worksheet > SQL*Plus Statements Supported and Not Supported in SQL Worksheet.
But you can use substr in the select statement to set the column width.
For example:
select substr(object_name,1,40) "Object", object_name
from user_objects
Run the statement as a script and see the difference between both columns.

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newdeveloper wrote:
Hello..
I 'm using a simple jtable with the default model. I just want to set each column size to make table smaller Is this possible?
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How to set a column size in sqldeveloper?

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