Writing Inside a text file using Scanner Class

Question

I have Come across so many programmes of how to read a text file using Scanner in Java. Following is some dummy code of Reading a text file in Java using Scanner:

public static void main(String[] args) {

    File file = new File("10_Random");

    try {

        Scanner sc = new Scanner(file);

        while (sc.hasNextLine()) {
            int i = sc.nextInt();
            System.out.println(i);
        }
        sc.close();
    } 
    catch (FileNotFoundException e) {
        e.printStackTrace();
    }
 }

But, please anyone help me in "Writing" some text (i.e. String or Integer type text) inside a .txt file using Scanner in java. I don't know how to write that code.

`Scanner` is for reading, not for writing. – Arnaud Apr 29 '16 at 07:01 — Arnaud, Apr 29 '16 at 07:01
consider `OutputStream` for your purpose – Andrew Tobilko Apr 29 '16 at 07:03 — Andrew Tobilko, Apr 29 '16 at 07:03

score 9 · Answer 1 · edited Apr 29 '16 at 07:46

9

Scanner can't be used for writing purposes, only reading. I like to use a BufferedWriter to write to text files.

BufferedWriter out = new BufferedWriter(new FileWriter(file));
out.write("Write the string to text file");
out.newLine();

edited Apr 29 '16 at 07:46

Marcel

1,509
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answered Apr 29 '16 at 07:27

jamesomahony

129
6

1

Ok, I didn't know that Scanner is for reading only. I will use this BufferedWriter class. Thanks a lot. :) – Vinay Verma Apr 29 '16 at 08:46

Sanjeev · Answer 2 · 2016-04-29T07:31:33.520

4

Scanner is for reading purposes. You can use Writer class to write data to a file.

For Example:

Writer wr = new FileWriter("file name.txt");
wr.write(String.valueOf(2))  // write int
wr.write("Name"); // write string

wr.flush();
wr.close();

Hope this helps

edited Apr 29 '16 at 07:31

answered Apr 29 '16 at 07:11

Sanjeev

9,876
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33

Ok, I didn't know that Scanner is for reading only. I will use this Writer class. Thanks a lot. :) – Vinay Verma Apr 29 '16 at 08:46

Writing Inside a text file using Scanner Class

2 Answers2