Problemas al escribir

[megajandro]

fijate si te sirve algo asi.

public void test() throws IOException{
readFile();
}
public String readFile()
throws IOException {
// Declaración del FileWriter para escribir en el archivo destino
String result;
String fileName = "archivo.txt";

File file = new File(fileName);
result = getContents(file);
System.out.println(result);
return result;
}

static public String getContents(File aFile) {
//...checks on aFile are elided
StringBuilder contents = new StringBuilder();

try {
//use buffering, reading one line at a time
//FileReader always assumes default encoding is OK!
BufferedReader input = new BufferedReader(new FileReader(aFile));

try {
String line = null; //not declared within while loop
/*
* readLine is a bit quirky :
* it returns the content of a line MINUS the newline.
* it returns null only for the END of the stream.
* it returns an empty String if two newlines appear in a row.
*/

while ((line = input.readLine()) != null) {
contents.append(line);
contents.append(System.getProperty("line.separator "));
}
} finally {
input.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}

return contents.toString();
}