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import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
public class Main {
/**
* Read input from reader and write it to writer until there is no more
* input from reader.
*
* @param reader the reader to read from.
* @param writer the writer to write to.
* @param buf the char array to use as a bufferx
*/
public static void flow( Reader reader, Writer writer, char[] buf )
throws IOException {
int numRead;
while ( (numRead = reader.read(buf) ) >= 0) {
writer.write(buf, 0, numRead);
}
}
}
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