char code convert (java)

96,5,2 version:
supports stdin/stdout
usage1: cat(type) inputfile | java sj2jis > outputfile
usage2: java sj2jis inputfile > outputfile
usage3: java sj2jis inputfile outputfile
usage4: cat inputfile |java sj2euc|java euc2jis|java jis2sj > outputfile ;-P

jis sjis euc
jis to... jis2sj jis2euc
sjis to... sj2jis sj2euc
euc to... euc2jis euc2sj

see also C++ version
test source (sjis)