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问题:

How do I set the color of the text of a label?

myLabel.setText("Text Color: Red");
myLabel.???

Can I have two seperate colors in one label?

For example here:

The "Text Color:" to be black and the "Red" to be red.

回答1:

Sure. To set the foreground color, simply use label.setForeground(Color.RED).

For the two-color question: You could for instance use html in your label-text:

frame.add(new JLabel("<html>Text color: <font color='red'>red</font></html>"));

produces

Another solution is of course to use two separate JLabels, each of which has its foreground color.

回答2:

You can set the color of a JLabel by altering the foreground category:

JLabel title = new JLabel("I love stackoverflow!", JLabel.CENTER);

title.setForeground(Color.white);

As far as I know, the simplest way to create the two-color label you want is to simply make two labels, and make sure they get placed next to each other in the proper order.

回答3:

JLabel label = new JLabel ("Text Color: Red");
label.setForeground (Color.red);

this should work

回答4:

object.setForeground(Color.green);

*any colour you wish *object being declared earlier

回答5:

One of the disadvantages of using HTML for labels is when you need to write a localizable program (which should work in several languages). You will have issues to change just the translatable text. Or you will have to put the whole HTML code into your translations which is very awkward, I would even say absurd :)

gui_en.properties:

title.text=<html>Text color: <font color='red'>red</font></html>

gui_fr.properties:

title.text=<html>Couleur du texte: <font color='red'>rouge</font></html>

gui_ru.properties:

title.text=<html>Цвет текста: <font color='red'>красная</font></html>

回答6:

Just wanted to add on to what @aioobe mentioned above...

In that approach you use HTML to color code your text. Though this is one of the most frequently used ways to color code the label text, but is not the most efficient way to do it.... considering that fact that each label will lead to HTML being parsed, rendering, etc. If you have large UI forms to be displayed, every millisecond counts to give a good user experience.

You may want to go through the below and give it a try....

Jide OSS (located at https://jide-oss.dev.java.net/) is a professional open source library with a really good amount of Swing components ready to use. They have a much improved version of JLabel named StyledLabel. That component solves your problem perfectly... See if their open source licensing applies to your product or not.

This component is very easy to use. If you want to see a demo of their Swing Components you can run their WebStart demo located at www.jidesoft.com (http://www.jidesoft.com/products/1.4/jide_demo.jnlp). All of their offerings are demo'd... and best part is that the StyledLabel is compared with JLabel (HTML and without) in terms of speed! :-)

A screenshot of the perf test can be seen at (http://img267.imageshack.us/img267/9113/styledlabelperformance.png)