native2ascii - Native-to-ASCII Encoding Converter

Java Tools Tutorials - Herong's Tutorial Examples

∟native2ascii - Native-to-ASCII Encoding Converter

This chapter provides tutorial notes on the native-to-ASCII encoding converter 'native2ascii'. Topics include 'native2ascii' command options, default encoding CP1252 used by 'javac', converting UTF-8 characters into \uXXXX Unicode code sequences, converting \uXXXX sequences back to native encodings.

native2ascii - Encoding Converter Command and Options

javac - Using CP1252 to Process Source File

"native2ascii -encoding" - UTF-8 to uXXXX Conversion

Setting UTF-8 Encoding in PrintStream

Converting uXXXX Sequences Back with "-reverse" Option

Conclusion:

Warning: "native2ascii" has been discontinued since JDK 9. But if you still have JDK 1.8 installed, you can continue to use it to convert Java source from one encoding to another.
"javac" uses "Cp1252" as the default encoding to process Java source files.
You can use escape sequences to enter Unicode characters in Java source files like, "System.out.println("\u4e16\u754c\u4f60\u597d\uff01");".
"native2ascii -encoding utf-8" command converts source file from UTF-8 encoding to escape sequences.
"native2ascii -reverse -encoding utf-8" command converts source file from escape sequences to UTF-8 encoding.
"native2ascii" has been discontinued since JDK 9. So you have to install JDK 8, if you want to use it.