JTextArea - need to remove the first line appended.

Posted on 2008-11-02
Medium Priority
Last Modified: 2013-11-23
I have a JTextArea in a GUI which will have appended lines of text during the operation of the GUI, but I also want the users to be able to remove the first added line of text. Each line has been appeneded using a newline.

Any ideas or suggestions?

Question by:OwenMoriarty
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Expert Comment

by:Kevin Cross
ID: 22864100
You could try using String.split() or StringTokenizer on the "\n" or "\n\r" as delimeters.  Then you will have each line of the JTextArea to manipulate as you see fit.

Author Comment

ID: 22866915
something like???

String[] myArray = myString.split("\n")

returns an array ? is this valid Java ?

LVL 60

Accepted Solution

Kevin Cross earned 2000 total points
ID: 22867163
That is what I was talking about.

Give this a try to test out your code. :)

If you find that you are getting line breaks in the result, then you should split on "\n\r" which is carriage return and line feed.
String myString = "My test\nstring has line breaks\nin it.\n";
		String[] myArray = myString.split("\n");
		for (String s : myArray) {

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Author Comment

ID: 22870690
Tks for that,
All working now.

LVL 60

Expert Comment

by:Kevin Cross
ID: 22870756
Glad that helped.

Happy coding!


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