Changing Eclipse Console Encoding to Output Unicode Characters

The Problem
Eclipse default encoding is Cp1252, This will cause Eclipse output non-English characters as question marks(?) or some weird characters in the console.

Change Encoding Globally
If we want to change the text encoding globally, we can open Window -> Preferences -> General -> Workspace. Change the Text file encoding from default Cp1252 to UTF-8.

Or we can change file.encoding in eclipse.ini by adding:-Dfile.encoding=UTF-8, then restart Eclipse.

Change Encoding per Application
If we just want to change console encoding for one application, open Run As –> Run Configurations, click the Common tab, change the encoding from default to UTF-8.

Test Code
The following test code will get default file encoding, and print chines words: 大家好.

public void testDefaultEncoding() throws UnsupportedEncodingException {
    System.out.println(System.getProperty("file.encoding"));
    PrintStream sysout = new PrintStream(System.out, true, "UTF-8");
    //print 大家好
    sysout.println("\u5927\u5bb6\u597d");
} 

Change log4j encoding
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.encoding=UTF-8

Resources
Interactive native2ascii
native2ascii - Native-to-ASCII Converter