Change Default Encoding in Eclipse

Change Encoding (UTF-8) in Eclipse

มีให้เปลี่ยนหลายที่เลย

Window > Preferences > Web > HTML Files
Window > Preferences > General > Editors > Text editors > Spelling
Window > Preferences > General > Workspace 
Window > Preferences > General > Content Types > Text

Reference: https://stijndewitt.com/2010/05/05/unicode-utf-8-in-eclipse-java/