Display the OSX Command symbol key in a JLabel
We want to show a hint for a JList that the user can select multiple items with the platform dependent key for multiselect.
However I have not found any way to show the OS X COMMAND symbol in a JLabel, which means the symbol that's printed on the apple keyboard on the command key, also called apple key.
Here's a picture of the symbol I want to display on OS X. 
(source: wikimedia.org)
Also I do want to have it platform independent.
I.e. something like
component.add( new JList() , BorderLayout.CENTER );
component.add( new JLabel( MessageFormat.format("With {0} you can "
+ "select multiple items",
KeyStroke.getKeyStroke( ... , ... ) ) ) , BorderLayout.SOUTH );
Where instead of the {0} there should appear above seen symbol...
Does any one of you guys know how to do this? I know it must be possible somehow since in the JMenuItems there is the symbol...
My own (non graphical solutions) looks like this:
add( new JLabel( MessageFormat.format(
"With {0} you can select multiple items" ,
System.getProperty( "mrj.version" ) != null ? "COMMAND" : "CTRL" ) ) ,
BorderLayout.SOUTH );
Asked by: Anna606 | Posted: 28-01-2022
Answer 1
The symbol in question is avaiable through Unicode, and the HTML character sets. All you need to do is make your JLabel display HTML by starting its text string with <html> and then include the character code.
JLabel label = new JLabel( "<html>⌘ is the Apple command symbol." );
This will work on a Mac, but I've no idea what it'll do on other platforms, although you do seem to have that covered off.
Answered by: Maddie160 | Posted: 01-03-2022Answer 2
As David points out, you can use the Unicode escape sequence \u2318 although it must be displayed with a font supporting it.
Answer 3
Your solution looks perfect. I assume you intend to factor out the hint code so you reuse it.
add( new JLabel( MessageFormat.format(
"With {0} you can select multiple items",
getMetaKeyHint(),
BorderLayout.SOUTH );
public String getMetaKeyHint() {
return System.getProperty( "mrj.version" ) != null ? "COMMAND" : "CTRL" );
}
Answer 4
I use the following code to check for the system and load accordingly
(System.getProperty("os.name").toUpperCase(Locale.US).indexOf("MAC OS X") == 0 )
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