Editors that run javac

Some programming editors will compile Java by linking to Sun's JDK.

TextPad - www.textpad.com

[These comments apply to the 4.7.3 version which was available for the last 3 years, and can still be downloaded. My first trials of the new 5.0 version didn't go well.]
Good, but doesn't indent program. Has brace matching feature. You can buy it, but can also continue to use trial version with occasional nags. If the Java SDK is installed first, TextPad allows compilation of Java programs from the editor. Minimal, but a common choice because of the simplicity.