FileNotFoundException when saving to a file
up vote
-2
down vote
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I am trying to create a program that saves an array to a file but it doesn't work:
File archivo = new File("/home");
static ArrayList<Contacto> contactos = new ArrayList<Contacto>();
static void leerFichContactos(File archivo) throws IOException, ClassNotFoundException {
FileInputStream fileIn = new FileInputStream(archivo);
ObjectInputStream objectIn = new ObjectInputStream(fileIn);
contactos = (ArrayList<Contacto>)objectIn.readObject();
objectIn.close();
ObjectInputStream leyendoFichero = new ObjectInputStream(new FileInputStream("contactos.dat") );
contactos = (ArrayList <Contacto> )leyendoFichero.readObject();
leyendoFichero.close();
}
@RequiresApi(api = Build.VERSION_CODES.KITKAT)
static void escribirDatosContactos(File archivo) throws IOException {
// check if sd card is mounted and available for read & write
try {
// create a file in downloads directory
FileOutputStream fos =
new FileOutputStream(archivo);
ObjectOutputStream os = new ObjectOutputStream(fos);
os.writeObject(contactos);
os.close();
Log.v("MyApp","El archivo ha sido guardado");
} catch (Exception ex) {
Log.e("Ficheros","Error al escribir el fichero en la memoria interna");
}
}
It returns this error
java.io.FileNotFoundException: /home (No such file or directory)
It may have something to do with the fact that I create a new activity on Android when I try to upload the file, but I'm not sure.
java
android edited Nov 19 at 15:03
Mihai Chelaru
2,10071022
asked Nov 19 at 14:06
victor96
11
|
show 2 more comments
up vote
-2
down vote
favorite
I am trying to create a program that saves an array to a file but it doesn't work:
File archivo = new File("/home");
static ArrayList<Contacto> contactos = new ArrayList<Contacto>();
static void leerFichContactos(File archivo) throws IOException, ClassNotFoundException {
FileInputStream fileIn = new FileInputStream(archivo);
ObjectInputStream objectIn = new ObjectInputStream(fileIn);
contactos = (ArrayList<Contacto>)objectIn.readObject();
objectIn.close();
ObjectInputStream leyendoFichero = new ObjectInputStream(new FileInputStream("contactos.dat") );
contactos = (ArrayList <Contacto> )leyendoFichero.readObject();
leyendoFichero.close();
}
@RequiresApi(api = Build.VERSION_CODES.KITKAT)
static void escribirDatosContactos(File archivo) throws IOException {
// check if sd card is mounted and available for read & write
try {
// create a file in downloads directory
FileOutputStream fos =
new FileOutputStream(archivo);
ObjectOutputStream os = new ObjectOutputStream(fos);
os.writeObject(contactos);
os.close();
Log.v("MyApp","El archivo ha sido guardado");
} catch (Exception ex) {
Log.e("Ficheros","Error al escribir el fichero en la memoria interna");
}
}
It returns this error
java.io.FileNotFoundException: /home (No such file or directory)
It may have something to do with the fact that I create a new activity on Android when I try to upload the file, but I'm not sure.
java
android edited Nov 19 at 15:03
Mihai Chelaru
2,10071022
asked Nov 19 at 14:06
victor96
11
You don't have andhomefolder in your project
– XtremeBaumer
Nov 19 at 14:06
Are you on Windows or Linux? On Windows, you would be specifying a folderhomewhich is relative to your project. On Linux, that might meanhome, a folder relative to root.
– Tim Biegeleisen
Nov 19 at 14:07
/homeindicates you're on Linux. In that case this would be a directory, i.e. you can't read any data from it anyways.
– Thomas
Nov 19 at 14:08
Honestly: try to come up with a real Minimal, Complete, and Verifiable example. Avoid code that uses other languages than English. That just reduces your chances of getting good answers.
– GhostCat
Nov 19 at 14:08
i'm using windows, Can you give me a correct path for this case?
– victor96
Nov 19 at 14:10
|
show 2 more comments
up vote
-2
down vote
favorite
up vote
-2
down vote
favorite
I am trying to create a program that saves an array to a file but it doesn't work:
File archivo = new File("/home");
static ArrayList<Contacto> contactos = new ArrayList<Contacto>();
static void leerFichContactos(File archivo) throws IOException, ClassNotFoundException {
FileInputStream fileIn = new FileInputStream(archivo);
ObjectInputStream objectIn = new ObjectInputStream(fileIn);
contactos = (ArrayList<Contacto>)objectIn.readObject();
objectIn.close();
ObjectInputStream leyendoFichero = new ObjectInputStream(new FileInputStream("contactos.dat") );
contactos = (ArrayList <Contacto> )leyendoFichero.readObject();
leyendoFichero.close();
}
@RequiresApi(api = Build.VERSION_CODES.KITKAT)
static void escribirDatosContactos(File archivo) throws IOException {
// check if sd card is mounted and available for read & write
try {
// create a file in downloads directory
FileOutputStream fos =
new FileOutputStream(archivo);
ObjectOutputStream os = new ObjectOutputStream(fos);
os.writeObject(contactos);
os.close();
Log.v("MyApp","El archivo ha sido guardado");
} catch (Exception ex) {
Log.e("Ficheros","Error al escribir el fichero en la memoria interna");
}
}
It returns this error
java.io.FileNotFoundException: /home (No such file or directory)
It may have something to do with the fact that I create a new activity on Android when I try to upload the file, but I'm not sure.
java
android edited Nov 19 at 15:03
Mihai Chelaru
2,10071022
asked Nov 19 at 14:06
victor96
11
I am trying to create a program that saves an array to a file but it doesn't work:
File archivo = new File("/home");
static ArrayList<Contacto> contactos = new ArrayList<Contacto>();
static void leerFichContactos(File archivo) throws IOException, ClassNotFoundException {
FileInputStream fileIn = new FileInputStream(archivo);
ObjectInputStream objectIn = new ObjectInputStream(fileIn);
contactos = (ArrayList<Contacto>)objectIn.readObject();
objectIn.close();
ObjectInputStream leyendoFichero = new ObjectInputStream(new FileInputStream("contactos.dat") );
contactos = (ArrayList <Contacto> )leyendoFichero.readObject();
leyendoFichero.close();
}
@RequiresApi(api = Build.VERSION_CODES.KITKAT)
static void escribirDatosContactos(File archivo) throws IOException {
// check if sd card is mounted and available for read & write
try {
// create a file in downloads directory
FileOutputStream fos =
new FileOutputStream(archivo);
ObjectOutputStream os = new ObjectOutputStream(fos);
os.writeObject(contactos);
os.close();
Log.v("MyApp","El archivo ha sido guardado");
} catch (Exception ex) {
Log.e("Ficheros","Error al escribir el fichero en la memoria interna");
}
}
It returns this error
java.io.FileNotFoundException: /home (No such file or directory)
It may have something to do with the fact that I create a new activity on Android when I try to upload the file, but I'm not sure.
java
android java
android edited Nov 19 at 15:03
Mihai Chelaru
2,10071022
asked Nov 19 at 14:06
victor96
11
edited Nov 19 at 15:03
Mihai Chelaru
2,10071022
asked Nov 19 at 14:06
victor96
11
edited Nov 19 at 15:03
Mihai Chelaru
2,10071022
edited Nov 19 at 15:03
Mihai Chelaru
2,10071022
edited Nov 19 at 15:03
Mihai Chelaru
2,10071022
2,10071022
asked Nov 19 at 14:06
victor96
11
asked Nov 19 at 14:06
victor96
11
asked Nov 19 at 14:06
victor96
11
11
You don't have andhomefolder in your project
– XtremeBaumer
Nov 19 at 14:06
Are you on Windows or Linux? On Windows, you would be specifying a folderhomewhich is relative to your project. On Linux, that might meanhome, a folder relative to root.
– Tim Biegeleisen
Nov 19 at 14:07
/homeindicates you're on Linux. In that case this would be a directory, i.e. you can't read any data from it anyways.
– Thomas
Nov 19 at 14:08
Honestly: try to come up with a real Minimal, Complete, and Verifiable example. Avoid code that uses other languages than English. That just reduces your chances of getting good answers.
– GhostCat
Nov 19 at 14:08
i'm using windows, Can you give me a correct path for this case?
– victor96
Nov 19 at 14:10
|
show 2 more comments
You don't have andhomefolder in your project
– XtremeBaumer
Nov 19 at 14:06
Are you on Windows or Linux? On Windows, you would be specifying a folderhomewhich is relative to your project. On Linux, that might meanhome, a folder relative to root.
– Tim Biegeleisen
Nov 19 at 14:07
/homeindicates you're on Linux. In that case this would be a directory, i.e. you can't read any data from it anyways.
– Thomas
Nov 19 at 14:08
Honestly: try to come up with a real Minimal, Complete, and Verifiable example. Avoid code that uses other languages than English. That just reduces your chances of getting good answers.
– GhostCat
Nov 19 at 14:08
i'm using windows, Can you give me a correct path for this case?
– victor96
Nov 19 at 14:10
You don't have and
home folder in your project– XtremeBaumer
Nov 19 at 14:06
You don't have and
home folder in your project– XtremeBaumer
Nov 19 at 14:06
Are you on Windows or Linux? On Windows, you would be specifying a folder
home which is relative to your project. On Linux, that might mean home, a folder relative to root.– Tim Biegeleisen
Nov 19 at 14:07
Are you on Windows or Linux? On Windows, you would be specifying a folder
home which is relative to your project. On Linux, that might mean home, a folder relative to root.– Tim Biegeleisen
Nov 19 at 14:07
/home indicates you're on Linux. In that case this would be a directory, i.e. you can't read any data from it anyways.– Thomas
Nov 19 at 14:08
/home indicates you're on Linux. In that case this would be a directory, i.e. you can't read any data from it anyways.– Thomas
Nov 19 at 14:08
Honestly: try to come up with a real Minimal, Complete, and Verifiable example. Avoid code that uses other languages than English. That just reduces your chances of getting good answers.
– GhostCat
Nov 19 at 14:08
Honestly: try to come up with a real Minimal, Complete, and Verifiable example. Avoid code that uses other languages than English. That just reduces your chances of getting good answers.
– GhostCat
Nov 19 at 14:08
i'm using windows, Can you give me a correct path for this case?
– victor96
Nov 19 at 14:10
i'm using windows, Can you give me a correct path for this case?
– victor96
Nov 19 at 14:10
|
show 2 more comments
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You don't have and
homefolder in your project– XtremeBaumer
Nov 19 at 14:06
Are you on Windows or Linux? On Windows, you would be specifying a folder
homewhich is relative to your project. On Linux, that might meanhome, a folder relative to root.– Tim Biegeleisen
Nov 19 at 14:07
/homeindicates you're on Linux. In that case this would be a directory, i.e. you can't read any data from it anyways.– Thomas
Nov 19 at 14:08
Honestly: try to come up with a real Minimal, Complete, and Verifiable example. Avoid code that uses other languages than English. That just reduces your chances of getting good answers.
– GhostCat
Nov 19 at 14:08
i'm using windows, Can you give me a correct path for this case?
– victor96
Nov 19 at 14:10