Question

I’m having trouble determining a way to parse a given text file.

Here is an entry in the file:

type = "book"
callnumber = "1"
authors = "a"
title = "t"
publisher = "p"
year = "2023"

each entry is separated by a line of whitespace (newline character).

so i have these variables (type, callnumber, authors, title….), and need to read this text and determine what values to set them to. For example, when i read the line “callnumber = 1”, then I need set that variable to 1.

This is what I have so far. I read in a line at a time, so type = "book" for example, and then I split that line into an array of strings, with the delimiter being “, so the array would contain type = and book .
Now my problem comes in going further from there. I figured I could cycle through each string in the array, character by character, until I hit whitespace. So i would have type, but I don’t have any data yet to store in type, and the grab will give me book (ignoring the = and whitespace), but how can I attribute book to type?

In summary, I’m looking for a way to parse a text file line by line, and assign variables values, based on the words I find.

Thanks.

Answer 1

Ignoring the current route, why not make use of Properties.load(InputStream inputStream)

Properties properties = new Properties();
properties.load(new FileInputStream("filename"));

string type = properties.getProperty("type");
System.out.println(type);

book