How to replace a character with a unicode character?

Question

How to replace the symbol - in the text that comes from the database in the jasper field, with the image? The purpose is the illustration below:

Something like: $F{KN_Zusatzinfo_DV_Einleitungstext}.replaceAll("- ", "[\\x254]") , where x254 is the ascii code for the red square.

But the above code writes the ascii code as it is in the text and does not create the image.

Answer 1

The correct syntax for displaying the unicode character \uXXXX

For example, this expression:

 $F{listItem}.replaceAll("-", "\u2588") 

Will do this

Now you like the dot to be red , so we need to apply some style, set markup="html" to textElement and replace the replacement with this

 $F{listItem}.replaceAll("-", "<font color=\"red\">\u2588</font>") 

It will display:

Note: You need to be careful with the regular expression in replaceAll , I probably ^- , therefore, starts with - (to avoid replacing others - in the text), in addition, the usual way would be to simply add a red rectangular element to each row. Also take care of font extensions if you export pdf so that your font displays correctly