Question

class Talk {
        String[] values;
        try {
            InputStream is = getAssets().open("jdata.txt");
            DataInputStream in = new DataInputStream(is);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));

            //Read File Line By Line
            while ((br.readLine()) != null) {
                 // Print the content on the console
                 strLine = strLine + br.readLine();
            }
        } catch (Exception e) { //Catch exception if any
            System.err.println("Error: " + e.getMessage());
        }
        parse(strLine);
    }

    public void parse(String jsonLine) {
        Data data = new Gson().fromJson(jsonLine, Data.class);
        values[0]= data.toString();
        return;
    }
}

This is in jdata.txt:

"{" + "'users':'john' + "}"

This is my Data.java:

public class Data {
    public String users;
}

The error I get is:

java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 9

Can anyone explain to me what this error means and how to remove it?

EDIT:

I got the answer. These are the tweaks I had to do. First, change the String array to an array list.

List<String> values = new ArrayList<String>();

The next tweak was here:

strLine = currentLine;
              currentLine = br.readLine();
              //Read File Line By Line
              while (currentLine != null)   {
              // Print the content on the console

                  strLine = strLine + currentLine;
                  currentLine = br.readLine();
              }

The final tweak was here:

String val = data.toString();
values.add(val);

Certain parts of the code might be redundant but I will take care of that later.

Answer 1

You’re calling readLine() twice. The following causes a line to be read from the file and lost:

while ((br.readLine()) != null)   {

Change the loop to:

//Read File Line By Line
String currentLine = br.readLine();
while (currentLine != null)   {
     // Print the content on the console
     strLine = strLine + currentLine;
     currentLine = br.readLine();
}

Also, the contents of jdata.txt should be:

{"users":"john"}

without superfluous + or " characters.