import java.io.*;

public class CharUtil2 {
    public static void dump(Reader src, Writer dest) throws IOException {
        try(Reader input = src;Writer output = dest) {
            char[] data = new char[1024];
            int length;
            while ((length = input.read(data)) != -1) {
                output.write(data, 0, length);
            }
        }
    }

    public static void dump(InputStream src, OutputStream dest,String charset) throws IOException {
        dump(
                new InputStreamReader(src, charset),
                new OutputStreamWriter(dest, charset));
    }

    public static void dump(InputStream src, OutputStream dest) throws IOException {
        dump(src, dest, System.getProperty("file.encoding"));
    }
}