Get all text together from txt file and print to the console

Question

I have a text file where text file Looks like output.txt

  | Component  | Tests Run   | Tests Failed                                   |
  |:-----------|:-----------:|:-----------------------------------------------|
  | Server     | 948         | :white_check_mark: 0                           |
  | Web Client | 123         | :warning: 2 [(see details)](http://linktologs) |
  | iOS Client | 78          | :warning: 3 [(see details)](http://linktologs) |

Here my work purpose I need to push all the code somewhere so that it will show like a table I want to read all the text from the text file and print the text together.

Currently its print line by line

try {
                FileReader reader = new FileReader("C:\\Users\\Zsbappa\\Pictures\\test\\output.txt");
                int line;

                while ((line = reader.read()) != -1) {
                    System.out.print((char) line);
                }
                reader.close();

            } catch (IOException e) {
                e.printStackTrace();
            }

Any suggestion will really appreciated

Possible duplicate of [Reading and displaying data from a .txt file](https://stackoverflow.com/questions/731365/reading-and-displaying-data-from-a-txt-file) — gtgaxiola, Aug 06 '18 at 18:19
It's not duplicate sir.I want to get all the text together. They read line by line.Before adding flag you suppose to read details — Zakaria Shahed, Aug 06 '18 at 18:21
i want to get full text in one variable and print it..Its print line by line — Zakaria Shahed, Aug 06 '18 at 18:48

score 2 · Answer 1 · answered Aug 06 '18 at 18:24

2

If you are on Java 8 or beyond, read them as a stream:

Files.lines(Paths.get("C:\\Users\\Zsbappa\\Pictures\\test\\output.txt")).forEach(System.out::println);

answered Aug 06 '18 at 18:24

M. le Rutte

3,525
3
18
31

its work perfectly but not help me..Thanks for your effort – Zakaria Shahed Aug 06 '18 at 18:53

TVASO · Answer 2 · 2018-08-06T18:24:25.810

1

Try using:

FileInputStream inputStream = new FileInputStream("output.txt");
try {
   System.out.println(IOUtils.toString(inputStream));
} finally {
    inputStream.close();
}

The IOUtils class is part of the Apache Commons IO. It can be downloaded here.

edited Aug 06 '18 at 18:24

answered Aug 06 '18 at 18:19

TVASO

481
3
15

Its throwing error Exception in thread "main" java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOf(Arrays.java:3332) – Zakaria Shahed Aug 06 '18 at 18:23

agillgilla · Accepted Answer · 2018-08-06T18:48:58.467

1

According to your question, you want to read the file all at once, but only print it line by line. I'm not sure why you would want to do this, but this should work:

    try {
        File file = new File("C:\\Users\\Zsbappa\\Pictures\\test\\output.txt");
        FileInputStream fis = new FileInputStream(file);
        byte[] data = new byte[(int) file.length()];
        fis.read(data);
        fis.close();

        String str = new String(data, "UTF-8");

        String lines[] = str.split("\\r?\\n");
        for (String line : lines) {
            System.out.println(line);
        }
    } catch (IOException e) {
        e.printStackTrace();
    }

This will be quite inefficient for large text files and will eat up your RAM, but this is the best solution I could think of for your specific problem.

Also remember to import File and FileInputStream since they are new standard library dependencies you are using.

edited Aug 06 '18 at 18:48

answered Aug 06 '18 at 18:37

agillgilla

859
1
7
22

Actually, I am integration a massager where if get all the output file and send it its will formatting like a table. This is my purpose.It will be not a big text file..Lets check your program – Zakaria Shahed Aug 06 '18 at 18:40
got an exception Exception in thread "main" java.lang.NegativeArraySizeException in this line byte[] data = new byte[(int) file.length()]; – Zakaria Shahed Aug 06 '18 at 18:42
Does the file have anything in it? Is it corrupted? I don't see how getting the length of the file would return a negative number unless there is something wrong with your file. – agillgilla Aug 06 '18 at 18:45
Same text like output – Zakaria Shahed Aug 06 '18 at 18:45
I just edited my solution to have a proper `try` `catch` so that the error handling is done. I copied your `output.txt` file to my computer and ran the program on it. It printed fine. Are you sure yours isn't corrupted (or that the path isn't messed up)? – agillgilla Aug 06 '18 at 18:50
sorry, I was missing the path. It's working perfectly for me now.Thanks, lots – Zakaria Shahed Aug 06 '18 at 18:52

Get all text together from txt file and print to the console

3 Answers3