利用 Java 獲取文件的編碼類型 (Use Java to get the file encoding)

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import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException;

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public static String fileEncoding(File file) throws FileNotFoundException, IOException{     FileInputStream in = new FileInputStream(file);     int[] bytes = new int[3];     for (int ch, i = 0; (ch = in.read()) > 0 && i < bytes.length; i++){         bytes[i] = ch;     }     String encoding = "ANSI";     if (bytes[0] == 0xff && bytes[1] == 0xfe){         encoding = "Unicode";     } else if (bytes[0] == 0xfe && bytes[1] == 0xff){         encoding = "Unicode Big-Endian";     } else if (bytes[0] == 0xef && bytes[1] == 0xbb && bytes[2] == 0xbf){         encoding = "UTF-8";     }     return encoding; }