How to convert from full-width to half-width Japanese characters in Java?

Question

I'm using class Transliterator of the icu project to convert from half-width to full-width characters like this:

Transliterator transliterator = Transliterator.getInstance("Hiragana-Katakana");
String converted = transliterator.transliterate("ｺﾝﾆﾁﾊ");  //half-width

The result of converted is: コンニチハ (full-width)

But:

String converted = transliterator.transliterate("コンニチハ");  //full-width

The result of converted is still: コンニチハ (full-width)

My expectation isｺﾝﾆﾁﾊ. Can anyone help me solve this?

Thanks.

Answer 1

I found the answer here . It's so simple by using different params as below:

Transliterator transliterator = Transliterator.getInstance("Halfwidth-Fullwidth");
String converted = transliterator.transliterate("ｺﾝﾆﾁﾊ");  //half-width

converted value: コンニチハ

Transliterator transliterator = Transliterator.getInstance("Fullwidth-Halfwidth");
String converted = transliterator.transliterate("コンニチハ");  //full-width

converted value: ｺﾝﾆﾁﾊ