Help on reading from and writing to a file !!!!!!!!!!!!!!!!

Question

hi there
anyone can help me on how to write and read from a file? how can i read one string at a time instead of a char. thank you.

Answer 1

You can do this with classes FileReader and FileWriter directly, but it's easiest to wrap these with other classes and call methods on those to read and write a string. All of the classes used below are in the java.io package. The code fragments just print any I/O exceptions to stderr. Replace filename with the name of the file you want to use.
To write a string to a file:
String s = "hello";
try {
FileWriter fw = new FileWriter("filename");
PrintWriter pr = new PrintWriter(fw);
pr.println(s); // write a string with a newline at the end
// pr.print(s); // write a string without a newline at the end
pr.close(); // must close for string to be written
} catch (IOException e) {
System.out.println(e);
To read a string from a file:
String s;
try {
BufferedReader br = new BufferedReader(new FileReader("filename"));
s = br.readLine();
} catch (IOException e) {
System.out.println(e);