Read a file and converting this file into a string

[kostinio]

Hello all,

In my code i created a text file which has 3 lines.. i want to read this file and to store these 3 lines in one string.. Does anyone have any idea how to do it?

Thanks in advance :)

[JosAH]

Use a StringBuilder and convert it to a String at the end when you have read your entire file; it's cheaper than just appending Strings to Strings. If you are reading your file line by line don't forget to append \n characters to your StringBuilder each time you have read a line.

kind regards,

Jos

[kostinio]

Can you give me an example?

[kostinio]

I tried to use this code but it didn't work :S

BufferedReader inputFile = new BufferedReader(new FileReader(myFilename));
String value = inputFile.readLine();

[JosAH]

I tried to use this code but it didn't work :S

BufferedReader inputFile = new BufferedReader(new FileReader(myFilename));
String value = inputFile.readLine();

That snippet of code just reads one line; read the API documentation for that BufferedReader class and see what happens if no more lines can be read from the file (that's the end-of-file condition). You'll need a loop as long as you can read lines. Append those lines (a String) to the StringBuffer and at the end convert that buffer to a String. Oh, and don't forget to close that file.

kind regards,

Jos

[AndreB]

Hm,

how about you open a FileInputStream, create a buffer of the size of the file and read the whole document in to that buffer. Afterwards create a string from that buffer.

E.g.

File file = new File("myFile");
FileInputStream fis = new FileInputStream(file);
char[] cbuff = new char[(int) file.length()];
fis.read(cbuff);
fis.close();
String mySuperString = new String(cbuff);

[JosAH]

Hm,

how about you open a FileInputStream, create a buffer of the size of the file and read the whole document in to that buffer. Afterwards create a string from that buffer.

E.g.

File file = new File("myFile");
FileInputStream fis = new FileInputStream(file);
char[] cbuff = new char[(int) file.length()];
fis.read(cbuff);
fis.close();
String mySuperString = new String(cbuff);

Better make that a byte[] instead of a char[] (InputStreams read bytes, not chars).

kind regards,

Jos

[AndreB]

yes, of course ;-) !

(wrote this from the mind)