hi everybody,
i have written one hava program.i am getting so many errors but all are "cannot resolve symbol" i am sending my code.can anyone help me solve this...i will be very greatful to u....
class Directory {
/*********************** MENU CONTROLLER ************************/
public static void main (
String[] args) throws Exception {
// declare variables & object
boolean toRepeat;
char option, subOption, searchOption;
EntryController EC = new EntryController();
// display main menu
do {
option = '0'; // Initialise option
Main.displayMenu(option);
option = getUserOption('1', '3');
// display sub menu
subOption = '0'; // Initialise subOption
while (option != '3' && subOption != '6') {
Main.displayMenu(option);
subOption = getUserOption('1', '6');
switch(subOption) {
case '1': // New entry
do{
EC.addEntry(option);
System.out.print
("\tEntry saved. Add another (Y/N) > ");
toRepeat = getAnswer();
} while (toRepeat);
break;
case '2': // Edit entry
do{
EC.editEntry(option);
System.out.print("\tEdit another (Y/N) > ");
toRepeat = getAnswer();
} while (toRepeat);
break;
case '3': // Delete entry
do{
EC.deleteEntry(option);
System.out.print("\tDelete another (Y/N) > ");
toRepeat = getAnswer();
} while (toRepeat);
break;
case '4': // Search entry
do {
Main.displaySearchMenu(option);
searchOption = getUserOption('1', '4');
if (searchOption == '4')
toRepeat = false;
else {
EC.searchEntry(option, searchOption);
System.out.print
("\tEnd of search. Search another (Y/N) > ");
toRepeat = getAnswer();
}
} while (toRepeat);
break;
case '5': // Display all entries
do{
if (option =='1') System.out.println
("\n\n\t***** Friends: Display All Entries *****");
else System.out.println
("\n\n\t**** Business: Display All Entries *****");
EC.displayAllEntry(option);
System.out.print
("\tEnd of record. Display again (Y/N) > ");
toRepeat = getAnswer();
} while (toRepeat);
break;
default: // Return to main menu
break;
} // End switch
} // End while
} while (option != '3');
} // End main() method
/******************** GET USER TO INPUT OPTION ********************/
public static char getUserOption(char min, char max)
throws Exception {
// Get input from user
char option = (char)System.in.read();
System.in.read(); System.in.read(); // Clear buffer
//
Test whether input is within acceptable range
while (option < min || option > max) {
System.out.print("\tlnvalid option! Try again > ");
option = (char)System.in.read();
System.in.read(); System.in.read(); // Clear buffer
}
return option;
} // End getUserOption() method
/******************* ANSWER YES OR NO ******************/
public static boolean getAnswer() throws Exception {
// Receive input from user
char answer = (char)System.in.read();
// Test whether input is acceptable
while (answer != 'Y' && answer !='y' &&
answer != 'N' && answer != 'n') {
System.in.read(); System.in.read(); // Clear buffer
System.out.print("\tEntry must be Y or N > ");
answer = (char)System.in.read();
}
System.in.read();System.in.read(); // Clear buffer
// Return result
if (answer == 'Y' || answer == 'y') return true;
else return false;
} // End getAnswer() method
} // End Directory class
/*****************MAIN CLASS TO DISPLAY ALL MENUS *******************/
class Main {
/****************** DISPLAY MAIN MENU & SUB MENU ******************/
public static void displayMenu(char option) {
switch(option) {
case '0': // Display Main Menu
System.out.println("\n\n");
System.out.println("\n<<<<< ELECTRONIC DIRECTORY SYSTEM >>>\n");
System.out.println("\t*** MAIN MENU ***\n");
displayMainMenu();
break;
case '1': // Display Friend Menu
System.out.println("\n \n");
System.out.println("\t***** Friends *****\n");
displaySubMenu();
break;
case '2': // Display Business Menu
System.out.println("\n \n");
System.out.println("\t***** Business *****\n");
displaySubMenu();
break;
} // End switch
} // End displayMenu() method
/**************** DISPLAY DETAILS OF MAIN MENU *******************/
public static void displayMainMenu() {
System.out.println("\t1. Friends");
System.out.println("\t2. Business");
System.out.println("\t3. Exit\n");
System.out.print("\tOption > ");
} // End displayMainMenu() method
/**************** DISPLAY DETAILS OF SUB MENU ******************/
public static void displaySubMenu() {
System.out.println("\t1. New Entry");
System.out.println("\t2. Edit Entry");
System.out.println("\t3. Delete Entry");
System.out.println("\t4. Search Entry");
System.out.println("\t5. Display All Entries");
System.out.println("\t6. Main\n");
System.out.print("\tOption > ");
} // End subMenu() method
/********************** DISPLAY EDIT MENU *************************/
public static void displayEditMenu(char listCategory) {
// Display heading
if (listCategory =='1')
System.out.println("\n\n\t*** Friends: Edit Entry ***\n");
else
System.out.println("\n\n\t*** Business: Edit Entry ***\n");
// Display edit functions
System.out.println("\tl. Edit Name Only");
System.out.println("\t2. Edit Telephone Only");
System.out.println("\t3. Edit Address Only");
System.out.println("\t4. Edit Name, Telephone & Address");
System.out.println("\t5. Skip\n");
System.out.print("\tOption > ");
} // End displayEditMenu() method
/********************** DISPLAY SEARCH MENU ***********************/
public static void displaySearchMenu(char listCategory) {
// Display heading
if (listCategory == '1')
System.out.println("\n\n\t*** Friends: Search Entry ***\n");
else
System.out.println("\n\n\t*** Business: Search Entry ***\n");
// Display search functions
System.out.println("\tl. Search by Name");
System.out.println("\t2. Search by Telephone");
System.out.println("\t3. Search by Address");
System.out.println("\t4. Skip\n");
System.out.print("\tOption > ");
// End displaySearchMenu()
} // End Main class
/*********** PERSON CLASS TO HOLD PERSON DATA *****************/
class Person {
// Declaration of attributes of Person class
private String name;
private String telephone;
private String address;
/*************** RETRIEVE NAME FROM A PERSON OBJECT ***************/
public String getName() {
return name;
} // End getName() method
/************ RETRIEVE TELEPHONE FROM A PERSON OBJECT *************/
public String getTelephone() {
return telephone;
} // End getTelephone() method
/************* RETRIEVE ADDRESS FROM A PERSON OBJECT **************/
public String getAddress() {
return address;
} // End getAddress() method
/***************** ASSIGN NAME TO A PERSON OBJECT *****************/
public void setName(String entry) {
name = entry;
} // End setName()method
/************* ASSIGN TELEPHONE TO A PERSON OBJECT ***************/
public void setTelephone(String entry) {
telephone = entry;
} // End setTelephone() method
/*************** ASSIGN ADDRESS TO A PERSON OBJECT ****************/
public void setAddress(String entry) {
address = entry;
} // End setAddress() method
} // End Person class
/***** ENTRYCONTROLLER CLASS TO CONTROL ENTRIES & MAINTAIN DATA ******/
class EntryController {
// Declare variables
int noOfFriends, noOfBusiness;
// Declare arrays for friends and business category
Person[] friendsList = new Person[100];
Person[] businessList = new Person[100];
/***** CONSTRUCTOR TO INITIALISE NUMBER OF FRIENDS & BUSINESS *****/
EntryController() {
noOfFriends = 0;
noOfBusiness =0;
} //End EntryController() method
/******************* CONTROLLER FOR NEW ENTRY ********************/
public void addEntry(char listCategory) throws Exception {
// Declare variables
boolean valid;
Person addEntry = new Person();
String header, input;
// Display heading
if (listCategory == '1')
header = "\n\n\t*** Friends: New Entry ***\n";
else
header = "\n\n\t*** Business: New Entry ***\n";
System.out.println(header);
// Get user to input name
System.out.print("\tEnterName\t> ");
//addEntry.setName(getUserInput());
// Get user to input telephone
System.out.print("\tEnter Telephone\t> ");
do { // Test validity of telephone
input = getUserInput();
valid = validTelephone(input);
if (!valid) System.out.print
("\tOnly numeric and space allowed. Try again > ");
else addEntry.setTelephone(input);
} while (!valid);
// Get user to input address
System.out.print("\tEnter Address\t> ");
addEntry.setAddress(getUserInput());
// Add new entry to the relevant list
if (listCategory =='1'){
friendsList[noOfFriends++] = addEntry;
bubbleSort(friendsList, noOfFriends);
}
else {
businessList[noOfBusiness++] = addEntry;
bubbleSort(businessList, noOfBusiness);
} // End addEntry() method
/***************** CONTROLLER FOR EDIT ENTRY ********************/
public void editEntry(char listCategory) throws Exception {
// Declare variables & objects
boolean matched, toEdit, valid;
char editOption;
int count = 0, noOfMatch = 0, recordNum = 0;
int[] matchedRecord;
Person[] editList = getDirectoryList(listCategory);
Person editEntry = new Person();
String header, input;
// Display heading
if (listCategory == '1')
header = "\n\n\t*** Friends: Edit Entry ***\n";
else
header = "\n\n\t*** Business: Edit Entry ***\n";
// Get user to input name to edit
do{
matched = toEdit = true;
System.out.println(header);
System.out.print("\tEnter Name to Edit > ");
// Search for matching records
matchedRecord = searchEntry(listCategory, '0');
// Test if any matching record exists
if (matchedRecord[0] == -1) {
matched = toEdit = false;
}
} while (!matched && toEdit);
// Calculate no of matches if matching record(s) exist
while (matchedRecord[count] != -1) {
noOfMatch = ++count;
}
// Get user to select one if multiple matching records exist
if (noOfMatch ==1) recordNum = 1;
else if (noOfMatch > 1) {
System.out.print
("\tEnter matched record number to Edit (0 to Skip) > ");
do { // Test validity of record number
input = getUserlnput();
valid = validNumber(input);
if (valid) {
recordNum = Integer.parselnt(input);
if (recordNum < 0 || recordNum > noOfMatch)
valid = false;
}
if(!valid)
System.out.print("\tlnvalid entry! Try again > ");
} while (!valid);
// Skip editing if user chooses "0"
if (recordNum == 0) toEdit = false;
else toEdit = true;
}//End if
// Display Edit Menu
if (toEdit) {
editEntry = editList[matchedRecord[recordNum - 1]];
Main.displayEditMenu(listCategory);
editOption = Directory.getUserOption('1', '5');
switch(editOption) {
case '1': // Edit name only
System.out.println
("\tExisting Name > " + editEntry.getName());
System.out.print("\tEnter New Name > ");
editEntry.setName(getUserInput());
break;
case '2': // Edit telephone only
System.out.println
("\tExisting Telephone > " + editEntry.getTelephone());
System.out.print("\tEnter New Telephone > ");
do {// Test validity of Telephone
input = getUserInput();
valid = validTeIephone(input);
if (!valid) System.out.print
("\tOnIy numeric and space allowed. Try again > ");
else editEntry.setTelephone(input);
} while (!valid);
break;
case '3': // Edit address only
System.out.println
("\tExisting Address > " + editEntry.getAddress());
System.out.print("\tEnter New Address > ");
editEntry.setAddress(getUserInput());
break;
case '4': // Edit name, telephone & address
System.out.println
("\tExisting Name\t\t> " + editEntry.getName());
System.out.print("\tEnter New Name\t\t> ");
editEntry.setName(getUserInput());
System.out.println("\tExisting Telephone\t> " +
editEntry.getTelephone());
System.out.print("\tEnter New Telephone\t> ");
do { // Test validity of telephone
input = getUserInput();
valid = validTelephone(input);
if (!valid) System.out.print
("\tOnly numeric and space allowed. Try again > ");
else editEntry.setTelephone(input);
} while (!valid);
System.out.println("\tExisting Address\t> " + editEntry.getAddress());
System.out.print("\tEnterNew Address\t> ");
editEntry.setAddress(getUserInput());
break;
default: // Skip editing
break;
} // End switch
// Update entry in list
if (editOption == '5')
System.out.print("\tEntry not edited. ");
else {
editList[matchedRecord[recordNum - 1]] = editEntry;
System.out.print("\tEntry edited. ");
// Sort relevant list in order of names
if(listCategory == '1')
bubbleSort(friendsList, noOfFriends);
else
bubbleSort(businessList,noOfBusiness);
}
}
else System.out.print("\tEntry not edited. ");
} // End editEntry() method
/****************** CONTROLLER FOR DELETE ENTRY *******************/
public void deleteEntry(char listCategory) throws Exception {
// Declare variables & objects
boolean matched, toDelete, valid;
int count = 0, noOfMatch = 0, recordNum = 0;
int[] matchedRecord;
Person[] deleteList = getDirectoryList(listCategory);
String header, input;
// Display heading
if (listCategory == '1')
header = "\n\n\t*** Friends: Delete Entry ***\n";
else
header = "\n\n\t*** Business: Delete Entry ***\n";
// Gef user to input name to delete
do{
matched = toDelete = true;
System.out.println(header);
System.out.print("\tEnterName to Delete > ");
// Search for any matching record
matchedRecord = searchEntry(listCategory, '0');
// Test if any matching record exists
if (matchedRecord[0] = -1) { matched = toDelete = false;
}
} while (!matched && toDelete);
// Calculate no of matches if matching record(s) exist
while (matchedRecord[count] !=-1){
noOfMatch = ++count;
}
// Get user to select one if multiple matching records exist
if (noOfMatch ==1){
recordNum= 1;
System.out.print("\tOnly 1 matched record. Delete it (Y/N) > ");
toDelete = Directory.getAnswer();
}
else if (noOfMatch > 1 ) {
System.out.print
("\tEnter matched record number to Delete (0 to Skip) > ");
do { // Test validity of record number
input = getUserlnput();
valid = validNumber(input);
if (valid) {
recordNum = Integer.parselnt(input);
if (recordNum < 0 || recordNum > noOfMatch)
valid = false;
}
if (! valid)
System.out.print("\tlnvalid entry! Try again > ");
} while (!valid);
// Skip editing if user chooses "0" if (recordNum ==0) toDelete = false;
else toDelete = true;
}
// Delete entry
if (toDelete) {
count = matchedRecord[recordNum - 1];
// Pack the relevant list starting from deleted entry
while (deleteList[count] != null) {
deleteList[count]=deleteList[++count];
}
if (listCategory = '1') -noOfFriends;
else - noOfBusiness;
System.out.print("\tEntry deleted, ");
}
else System.out.print("\tEntry not deleted. ");
} // End deleteEntry() method
/***************** CONTROLLER FOR SEARCH ENTRY *******************/
public int[] searchEntry(char listCategory, char searchOption)
throws Exception {
// Declare variables & objects
int count = 0, noOfMatch = 0;
int[] matchedRecord = new int[100];
Person[] searchList = getDirectoryList(listCategory);
String header, searchEntry;
// Display heading
if (listCategory == '1')
header = "\n\n\t*** Friends: Search Entry ***\n";
else
header = "\n\n\t*** Business: SearchEntry ***\n";
matchedRecord[0] = -1;// Array to hold indices of matched record
switch(searchOption) {
case '1': // Search by name
System.out.println(header);
System.out.print("\tEnter Name to Search > ");
searchEntry = getUserInput();
while (searchList[count] != null) {
if (searchList[count].getName().toUpperCase().
startsWith(searchEntry.toUpperCase()))
matchedRecord[noOfMatch++-] = count;
matchedRecord[noOfMatch]=-1;
++count;
} // End while
break;
case '2': // Search by telephone
System.out.println(header);
System.out.print("\tEnter Telephone to Search > ");
searchEntry = getUserInput();
while (searchList[count] !=null){
if(searchList[count].getTelephone().
toUpperCase().startsWith(searchEntry.toUpperCase()))
matchedRecord[noOfMatch++] = count;
matchedRecord[noOfMatch] = -1;
++count;
} // End while
break;
case'3'://Search by address
System.out.println(header);
System.out.print("\tEnter Address to Search > ");
searchEntry = getUserlnput();
while (searchList[count] != null) {
if(searchList[count].getAddress().
toUpperCase().startsWith(searchEntry.toUpperCase()))
matchedRecord[noOfMatch++] = count;
matchedRecord[noOfMatch] = -1;
++count;
} // end while
break;
default: // Search by name for edit & delete only
searchEntry = getUserInput();
while (searchList[count] != null) {
if (searchList[count].getName().toUpperCase().
startsWith(searchEntry.toUpperCase()))
matchedRecord[noOfMatch++] = count;
matchedRecord[noOfMatch] = -1;
++count;
} // End while
break;
} //End switch
// Display all matching records
for (count = 0; count < noOfMatch; ++count) {
System.out.println("\tMatched record #" + (count + 1));
System.out.println("\tName\t\t: " +
searchList[matchedRecord[count]].getName());
System.out.println("\tTelephone\t: " +
searchList[matchedRecord[count]].getTelephone());
System.out.println("\tAddress\t\t: " +
searchList[matchedRecord[count]].getAddress());
// Display entries in group of 5
if ((count +1)% 5 == 0){
System.out.print("\tPress ENTER to Continue > ");
System.in.read(); System.in.read();
}
}
// Display number of matched records
if (noOfMatch == 0)
System.out.println("\tNo matched record.");
else
System.out.println("\t Total number of matched records: " + noOfMatch);
return matchedRecord;
} // End searchEntry() method
/*************** CONTROLLER FOR DISPLAY ALL ENTRIES ***************/
public void displayAllEntry(char listCategory) throws Exception {
// Declare variables & objects
int count = 0;
Person[] displayList = getDirectoryList(listCategory);
// Display all entries
while (displayListfcount] != null) {
System.out.println("\tName\t\t: " +
displayList[count] .getName());
System.out.println("\tTelephone\t: " +
displayList[count].getTelephone());
System.out.println("\tAddress\t\t: " +
displayList[count].getAddress() + "\n");
++count;
// Display entries in group of 5
if(count%5 = 0){
System.out.print("\tPress ENTER to Continue > ");
System.in.read(); System.in.read();
}
} // End while
System.out.println("\tTotal number of records: " + count);
} // End displayAllEntry()
/************** RETRIEVE FRIENDS OR BUSINESS LIST ****************/
public Person[] getDirectoryList (char HstCategory) {
if (listCategory == '1') return friendsList;
else return businessList;
} // End getDirectoryList() method
/******************* GET USER TO INPUT STRING ********************/
public String getUserlnput() throws Exception {
IStream userInput = new IStream();
return userInput.readStr();
} // End getUserInput() method
/****************SORT LISTING IN ORDER OF NAMES *****************/
public static void bubbleSort(Person[] list, int listSize) {
// Declare variables & object
int loop1, Ioop2;
int highSubscript = listSize - 1, comparesToMake = listSize - 1;
Person temp;
// Bubble sort Person object by names
for (loopl = 0; loopl < highSubscript; ++loop1) {
for (Ioop2 = 0; Ioop2 < comparesToMake; ++loop2) {
if (list[loop2] .getName().toUpperCase().compareTo
(list[loop2 + l].getName().toUpperCase()) > 0) {
temp = list[loop2];
list[loop2] = list[loop2 + 1];
list[loop2 + 1] = temp;
}
} // End loop2
--comparesToMake;
}//Endloop1
return Temp;
} // End bubbleSort() method
/************ TEST WHETHER STRING INPUT IS NUMERIC **************/
public static boolean validNumber(String input) {
// Declare variables
boolean valid = true;
int position = 0;
// Do not accept empty input
if (input.equals("")) valid = false;
// Test whether characters in the string are numeric
while (valid && position < inputlength()) {
if (input.charAt(position) < '0' ||
input.charAt(position) > '9')
valid = false;
++position;
} // End while
return valid;
} // End validNumber() method
/****** TEST WHETHER STRING INPUT IS NUMERIC (SPACE ALLOWED) ******/
public static boolean validTelephone(String input) {
// Declare variables
boolean valid = true;
int position = 0;
// Do not accept empty input
if (input.equals("")) valid = false;
// Test whether characters in the string are numeric or space
while (valid && position < input.length()) {
if ((input.charAt(position) <'0' ||
input.charAt(position) > '9') &&
input.charAt(position) != ' ')
valid = false;
++position;
} // End while
return valid;
}; //End validTelephone() method
}
} // End EntryController
}
import java.io.*;
public class IStream {
public String readStr() throws IOException {
InputStream istream;
int c;
char x;
String istr = new String();
istream = System.in;
try{
while ((c = istream.read()) != 13) {
x = (char) c;
istr = istr + x;
}//end while
}//end try
catch(IOException e) {
System.out.println ("Err Input");
return ("-1");
}//end catch
finally {
istream.close();
System.in.read();
return (istr);
}//end finally
}//end readstr
public int readlnt() throws IOException {
String inputString = new String();
char newchar;
int inputNumber=-1;
try{
System.out.println ("Enter Number > ");
newchar = (char) System.in.read();
while (newchar >= '0' && newchar <= '9') {
inputString = inputString + newchar;
newchar = (char) System.in.read();
inputNumber = Integer.parseInt(inputString);
System.out.println (inputNumber);
}
}//end try
catch(IOException e) {
System.out.println ("Err Input");
return (-1);
}//end catch
finally {
//istream.close();
System.in.read();
return (inputNumber);
}//end finally
}//end readstr
}
