file input/output stream (text file)

jrturner0112 · by **jrturner0112** » Tue Feb 22, 2011 9:16 pm

I'm having difficulty writing strings to and from files.

String String_1 = "I'm";
String String_2 = "Getting";
String String_3 = "Frustrated";
String String_4 = null;
String String_5 = null;
String String_6 = null;

FileOutputStream fOut = null;
OutputStreamWriter osw = null;
try{
fOut = openFileOutput("user1Profile.txt", 0);
osw = new OutputStreamWriter(fOut);
osw.write(String_1);
osw.write(String_2);
osw.write(String_3);
fOut.close()
}
catch(){}
----------------------------------
FileInputStream fln = null;
InputStreamReader isr = null;

try {
char[]inputBuffer = new char[1024];
fln = openFileInput("user1Profile.txt");
isr = new InputStreamReader(fln);
isr.read(inputBuffer);
String_4 = new String(inputBuffer);
isr.close();
fln.close();
}

catch() {}

Will all 3 strings be stored in String_4?

How would I put String 1, 2, and 3 into 4, 5 and 6???
I've tried countless combinations. Please help.

lockon_stratos · by **lockon_stratos** » Wed Mar 16, 2011 7:14 am

hi jrturner0112,

Here is the code snippet on how to write and read using file stream.

Writing using FileOutputStream:

Syntax: [ Download ] [ Hide ]

Using java Syntax Highlighting

try {
                String str1 = "hello";
                String str2 = "world";
                
                FileOutputStream fos = openFileOutput("test.txt", MODE_PRIVATE);
                fos.write(str1.getBytes());
                fos.write(str2.getBytes());
                fos.close();
        } catch(IOException ex) {
                Log.e(TAG, ex.getMessage());
        }
 
Parsed in 0.032 seconds,  using GeSHi 1.0.8.4

Reading using FileInputStream:

Syntax: [ Download ] [ Hide ]

Using java Syntax Highlighting

try {
                                        FileInputStream fis = openFileInput("test.txt");
                                        byte[] b = new byte[1024];
                                        String s = "";
                                        
                                        while(fis.read(b) > -1) {
                                                s += new String(b, 0, b.length);
                                        }
                                        
                                        fis.close();
                                        TextView textview1 = (TextView) findViewById(R.id.textview1);
                                        textview1.setText(s);
                                } catch(IOException ex) {
                                        Log.e(TAG, ex.getMessage());
                                }
 
Parsed in 0.032 seconds,  using GeSHi 1.0.8.4

file input/output stream (text file)

file input/output stream (text file)

Re: file input/output stream (text file)

Who is online