Cannot compare two strings using <

Question

My code reads a number ("4") from a .txt file, in sd card, then It is supposed to compare this number against "5". but It is not letting me, It says "operator '<' cannot be applied to java.lang.stringbuilder"

this is how I read-

  StringBuilder serverApkVersion = new StringBuilder();
        try {
            BufferedReader br = new BufferedReader(new FileReader(VerFileDirectory));
            String line;
            while ((line = br.readLine()) != null) {
                serverApkVersion.append(line);
                serverApkVersion.append('\n');
            }
            br.close();
        } catch ( IOException e ) {
            Toast.makeText(context, "error reading ver file", Toast.LENGTH_LONG).show();
        }

this is how I compare-

   if (serverApkVersion > 5) {

PS:: I have tried this -

int serverApkVersion = Integer.parseInt(String.valueOf(serverVersion));

but it force closes, log says "invalid int "5" "

see https://docs.oracle.com/javase/7/docs/api/java/lang/Integer.html#valueOf(java.lang.String) — Scary Wombat, May 26 '17 at 05:46
I recommend you learning at least Java basics before doing something. If you did that, you'd knwo that you can't compare string and integer. You have to convert string to int first. — Vladyslav Matviienko, May 26 '17 at 05:47
@JineshFrancis - Have you tried that? Hint: ... try your "solutions" before you post them. — Stephen C, May 26 '17 at 05:50

score 0 · Answer 1 · answered May 26 '17 at 06:22

0

You want to compare an Integer with an Integer so

if (Integer.valueOf (serverApkVersion.toString ()) > 5)

answered May 26 '17 at 06:22

Scary Wombat

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Cannot compare two strings using <

1 Answers1