I want to set a text in a label:
labelDemnaechst.setText(\" Demnächst fällig:\");
On the output in the application the characters \"ä\" are
To get UTF-8 encoding for your entire workspace, go to Window -> Preferences. In the pop-up start typing encoding. Now you should have Content Types, Workspace, CSS Files, HTML Files, XML Files as result. In content Types you can type UTF-8 in the Default encoding text box, for the other elements you can just select the encoding in their respective listboxes.
Then check the encoding for your project in Project -> Properties -> Resource.
Detailed instruction with pictures can be found here:
http://stijndewitt.wordpress.com/2010/05/05/unicode-utf-8-in-eclipse-java/
Cheers