----------------------------------- venom Fri Oct 13, 2006 8:41 am FILE SAVING assistance ----------------------------------- curretly in java we have been dooing file saving currently im having a bit of a problem with retrive old data and some other parts >.> // The "FileSaving" class. import java.awt.*; import hsa.Console; import java.io.*; //--Part A) Without methods, mainline olny. //--Keyboard entry get array names a adress city ,etc to a dat file to Oct 11 //--Repeat this in a while,check the yes/no response //--Part B) With a method //--Part C) Start the program to read data , ask to read the old data //--Hint: Read the data file first //-- public class FileSaving { static Console c; // The output console public static void data (String name[], String city[], String age[], String address[], String postal[], int num) { c.print ("name", 10); c.print ("age", 10); c.print ("city", 10); c.print ("address", 10); c.print ("postal", 10); for (int i = 0 ; i < num ; i++) { c.print (name [i], 10); c.print (age [i], 10); c.print (city [i], 10); c.print (address [i], 10); c.print (postal [i], 10); } } int num; public static int check () { num = c.readInt (); if (!(num == 1) & !(num == 2) & !(num == 3)) { c.println ("please enter 1,2 or 3."); check (); } return (num); } public static void main (String[] args) throws IOException { String choice = "o"; String ch = "o"; String name[]; String city[]; String postal[]; String age[]; String address[]; String text; String oldtext[]; int num; int counter = 1; c = new Console (); // Place your program here. 'c' is the output console while (!(ch.equals ("y") || ch.equals ("n"))) { c.println ("would you like to see previous data?"); ch = c.readLine (); } while (!choice.equals ("n")) { choice = "o"; PrintWriter output; BufferedReader input; input = new BufferedReader (new FileReader ("oct11.dat")); // output = new PrintWriter (new FileWriter ("oct11.dat")); text = input.readLine (); while (text != null) { if (ch.equals ("y")) { c.println (text); } counter = counter + 1; text = input.readLine (); } oldtext = new String [counter + 1]; counter = 0; BufferedReader in; in = new BufferedReader (new FileReader ("oct11.dat")); oldtext [0] = in.readLine (); while (oldtext [counter] != null) { counter = counter + 1; oldtext [counter] = in.readLine (); } c.println ("how many people are submitting information"); num = c.readInt (); name = new String [num + counter]; //gives name a number city = new String [num + counter]; //gives age a number age = new String [num + counter]; //gives city a number postal = new String [num + counter]; //gives postal code a number address = new String [num + counter]; //gives address a number for (int i = 0 ; i < num ; i++) { c.println ("enter your name."); //asks name name [i] = c.readLine (); //gets name c.println ("enter your age."); //asks age age [i] = c.readLine (); //gets age c.println ("enter your city."); //asks city city [i] = c.readLine (); //gets city c.println ("enter your address."); //asks address address [i] = c.readLine (); //gets address c.println ("enter your postal code."); //asks postal code postal [i] = c.readLine (); //gets postal code c.clear (); //clears screen } output = new PrintWriter (new FileWriter ("oct11.dat")); // saves data to a data file for (int i = 0 ; i < num ; i++) { output.println ((i + 1) + " " + name [i]); output.println (" " + age [i]); output.println (" " + city [i]); output.println (" " + address [i]); output.println (" " + postal [i]); } // BufferedReader input; // input = new BufferedReader (new FileReader ("oct11.dat")); for (int i = 0 ; i < counter ; i++) { output.println (oldtext [i]); } output.close (); while (!choice.equals ("y") || choice.equals ("n")) { c.println ("wouldyou like to continue? y/n"); choice = c.readLine (); } } } // main method } // FileSaving class i would ask my teacher for help but he is less than useless when it comes to actually teaching java and turing :roll: and im reading through the tuts on this forum so i may figure it out on my own ----------------------------------- wtd Fri Oct 13, 2006 11:46 am ----------------------------------- Looking at this I really think you need to go back to basics with Java. No, I do not mean "BASIC." ;) You have numerous extraneous comments, you use the HSA garbage so that you won't be able to receive help from a huge chunk of the Java community, you have extremely poorly named methods and variables ("c" and "data", for instance. You write array declarations as "String fooNow, I am not saying this is your fault. However, it is your responsibility, if you wish to become a good Java programmer, to overcome these problems. ----------------------------------- venom Fri Oct 13, 2006 12:44 pm ----------------------------------- well this is what happens when you have to deal with a failure of a teacher teaching something you really want to learn but a rock could be more help then the teacher im still reading through that java tut so i hope to be getting better a java X3 ----------------------------------- CroAnte Wed Oct 18, 2006 9:13 am ----------------------------------- So what is it you're trying to do? I could cut and paste the code into my Java (we use Holt at my school too), but I'm too lazy. :) ----------------------------------- venom Thu Oct 19, 2006 7:56 am ----------------------------------- more or less i was trying to get the file saving program to work in a method but that not important atm more or less i wanted to check for old data before inputing new data. doesnt matter now i figured it out :p