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Convert file in SJIS to UTF8

import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStreamReader; import java.io.OutputStreamWriter; public class Converter {   public static void main(String args[]) throws Exception {     FileInputStream fis = new FileInputStream(new File("input.txt"));     BufferedReader in = new BufferedReader(new InputStreamReader(fis, "SJIS"));     FileOutputStream fos = new FileOutputStream(new File("output.txt"));     BufferedWriter out = new BufferedWriter(new OutputStreamWriter(fos, "UTF8"));     int len = 80;     char buf[] = new char[len];     int numRead;     while ((numRead = in.read(buf, 0, len)) != -1)       out.write(buf, 0, numRead);     out.close();     in.close();   } }