Newline in JLabel

How can I display a newline in JLabel?

For example, if I wanted:

Hello World!
blahblahblah

This is what I have right now:

JLabel l = new JLabel("Hello World!\nblahblahblah", SwingConstants.CENTER);

This is what is displayed:

Hello World!blahblahblah

Forgive me if this is a dumb question, I'm just learning some Swing basics...

Solution 1:

Surround the string with <html></html> and break the lines with <br/>.

JLabel l = new JLabel("<html>Hello World!<br/>blahblahblah</html>", SwingConstants.CENTER);

Solution 2:

You can try and do this:

myLabel.setText("<html>" + myString.replaceAll("<","&lt;").replaceAll(">", "&gt;").replaceAll("\n", "<br/>") + "</html>")

The advantages of doing this are:

It replaces all newlines with <br/>, without fail.
It automatically replaces eventual < and > with < and > respectively, preventing some render havoc.

What it does is:

"<html>" + adds an opening html tag at the beginning
.replaceAll("<", "<").replaceAll(">", ">") escapes < and > for convenience
.replaceAll("\n", "<br/>") replaces all newlines by br (HTML line break) tags for what you wanted
... and + "</html>" closes our html tag at the end.

P.S.: I'm very sorry to wake up such an old post, but whatever, you have a reliable snippet for your Java!

Solution 3:

You can use the MultilineLabel component in the Jide Open Source Components.

http://www.jidesoft.com/products/oss.htm

Solution 4:

You can do

JLabel l = new JLabel("<html><p>Hello World! blah blah blah</p></html>", SwingConstants.CENTER);

and it will automatically wrap it where appropriate.

Solution 5:

Thanks Aakash for recommending JIDE MultilineLabel. JIDE's StyledLabel is also enhanced recently to support multiple line. I would recommend it over the MultilineLabel as it has many other great features. You can check out an article on StyledLabel below. It is still free and open source.

http://www.jidesoft.com/articles/StyledLabel.pdf