Count characters with FileInputStream
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import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
public class Count {
public static void countChars(InputStream in) throws IOException {
int count = 0;
while (in.read() != -1)
count++;
System.out.println("Counted " + count + " chars.");
}
public static void main(String[] args) throws Exception {
if (args.length >= 1)
countChars(new FileInputStream(args[0]));
else
System.err.println("Usage: Count filename");
}
}
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