File read assumes default encoding

Code reviewCode quality & reviewMid–Senior~25 min

Review this Java that reads an uploaded text file's contents.

What a strong answer looks like

Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix, specific and kind.

0:00 of about 25 min

Mark a line and say what kind of problem it is.0 findings

1import java.io.*;

3String readAll(InputStream in) throws IOException {

4 BufferedReader r = new BufferedReader(new InputStreamReader(in));

5 StringBuilder sb = new StringBuilder();

6 String line;

7 while ((line = r.readLine()) != null) sb.append(line).append('\n');

8 return sb.toString();

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