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Editorial Team
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Asked: 2026-05-26T23:37:14+00:00

I’m looking for a quick way to find a String in a JTextPane and

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I’m looking for a quick way to find a String in a JTextPane and change the style there, so it gets highlighted. What I currently have is something like this (tpOutput is the JTextPane in question, strSearch the String to be searched.. duh):

int index = tpOutput.getText().indexOf(strSearch);
StyledDocument doc = tpOutput.getStyledDocument();
doc.setCharacterAttributes(i, strSearch.length(), doc.getStyle("exampleStyle") , false);

However, as beautiful as that would be if it worked, it counts wrong on newline characters, so if I search the text “foobar” in

foobarTTT
abcd123
abcd123

it would highlight “foobar” in the first line correctly. However, in

abcd123
abcd123
foobarTTT

it would highlight “obarTT” (and the following 2 whitespaces if they exist)

I’m probably doing the whole thing wrong, trying to get the offset easy using just the text. Anyone know the proper way to do this?

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1 Answer

  1. Editorial Team

    You can also use a Highlighter, discussed in How to Use Text Fields: Another Example: TextFieldDemo.

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