Find a string (or a line) in a txt File Java

Question

let\'s say I have a txt file containing:

john
dani
zack

the user will input a string, for example \"omar\" I want the program to search tha

Answer 1

You can do this with Files.lines:

try(Stream lines = Files.lines(Paths.get("...")) ) {
    if(lines.anyMatch("omar"::equals)) {
  //or lines.anyMatch(l -> l.contains("omar"))
        System.out.println("found");
    } else {
        System.out.println("not found");
    }
}

Note that it uses the UTF-8 charset to read the file, if that's not what you want you can pass your charset as the second argument to Files.lines.