i'm an IT student. Our Instructor gave us assignment to edit and delete txt file.
how to edit and delete text file in java? can you give me the code ?
resiak -3 Newbie Poster
zeroliken 79 Nearly a Posting Virtuoso
Is searching the web for a sample too hard for you?
can you give me the code ?
that would be spoonfeading you and you'll learn nothing in the process
if you need specific help with your code, then post that here, explain the problem then we'll help
resiak -3 Newbie Poster
import java.util.*;
import java.io.*;
import java.io.PrintWriter;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class tondo {
public static void main(String[] args) throws IOException{
int ans = 1;
int day = 1, month = 0, year = 1, ageYears, ageMonths, ageDays;
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
Calendar cd = Calendar.getInstance();
String fileName = "out.txt";
PrintWriter outputStream = null;
do{
try{
outputStream = new PrintWriter(fileName);
outputStream = new PrintWriter(new FileOutputStream("outD.txt",true));
System.out.print(" First Name:");
Scanner keyboard1 = new Scanner(System.in);
while (!keyboard1.hasNext("[A-Za-z]+")) {
System.out.println("Enter Letter only:");
keyboard1.nextLine();
}
String word1 = keyboard1.nextLine();
System.out.print(" Middle Name:");
Scanner keyboard2 = new Scanner(System.in);
while (!keyboard2.hasNext("[A-Za-z]+")) {
System.out.println("Enter Letter Please:");
keyboard2.nextLine();
}
String word2 = keyboard2.nextLine();
int i = word2.indexOf(' ');
int j = word2.lastIndexOf(' ');
String middle = word2.substring(i+1, i+2);
System.out.print(" LastName:");
Scanner keyboard = new Scanner(System.in);
while (!keyboard.hasNext("[A-Za-z]+")) {
System.out.println("Enter Letter only");
keyboard.nextLine();
}
String line1 = keyboard.nextLine();
System.out.print("Gender:");
Scanner keyboard3 = new Scanner(System.in);
System.out.println("Male[1], Female[2]");
while (!keyboard3.hasNext("[1-2]")) {
System.out.println(" enter number 1 and 2 only.");
System.out.println("Male[1], Female[2]");
keyboard3.nextLine();
}
int input = keyboard3.nextInt();
if (input==1){
outputStream.print("Mr." + " "+ word1 + " " + word2 +" "+ line1 );
}
else if(input==2){
outputStream.print("Mrs/Ms."+ " " +word1 + " " +word2 + " " +line1);
}
else if (input!=1){
System.out.println("invalid input");
}
else if(input!=2) {
System.out.println("invalid input");
}
System.out.println(" year of birth : ");
Scanner info = new Scanner(System.in);
while (!info.hasNext("[0-M]+")) {
System.out.println("Enter number Please:");
info.nextLine();
}
year = info.nextInt();
if(year > cd.get(Calendar.YEAR)){
System.out.println("not born yet");
}
while(year > cd.get(Calendar.YEAR)){
year = Integer.parseInt(in.readLine());
if(year > cd.get(Calendar.YEAR)){
System.out.println("Invalid date of birth.");
}
}
System.out.println(" month of birth ");
Scanner info2 = new Scanner(System.in);
while (!info2.hasNext("[0-M]+")) {
System.out.println("Please enter a number:");
info.nextLine();
}
month = info2.nextInt();
if(month < 1 || month > 12){
System.out.println(" enter only month between 1 to 12.");
while(month < 1 || month > 12){
month = Integer.parseInt(in.readLine());
if(month < 1 || month > 12){
System.out.println("only enter month between 1 to 12.");
}
}
}
else{
month--;
if(year == cd.get(Calendar.YEAR)){
if(month > cd.get(Calendar.MONTH)){
System.out.println("Invalid input!");
System.exit(0);
}
}
}
System.out.println(" day of birth ");
Scanner info3 = new Scanner(System.in);
while (!info3.hasNext("[0-M]+")) {
System.out.println("Please enter a number:");
info3.nextLine();
}
day = info3.nextInt();
if(month == 0 || month == 2 || month == 4 || month == 6 || month == 7 || month == 9 || month == 11){
if(day > 31 || day < 1){
System.out.println("Please enter day between 1 to 31.");
while(day > 31 || day < 1){
day = Integer.parseInt(in.readLine());
if(day > 31 || day < 1){
System.out.println("Please enter day between 1 to 31.");
}
}
}
}
else if(month == 3 || month == 5 || month == 8 || month == 10){
if(day > 30 || day < 1){
System.out.println("Please enter day between 1 to 30.");
while(day > 30 || day < 1){
day = Integer.parseInt(in.readLine());
if(day > 30 || day < 1){
System.out.println("Please enter day between 1 to 30.");
}
}
}
}
else{
if(new GregorianCalendar().isLeapYear(year)){
if(day < 1 || day > 29){
System.out.println("Please enter day between 1 to 29.");
while(day < 1 || day > 29){
day = Integer.parseInt(in.readLine());
if(day < 1 || day > 29){
System.out.println("Please enter day between 1 to 29.");
}
}
}
}
else if(day < 1 || day > 28){
System.out.println("Please enter day between 1 to 28.");
while(day < 1 || day > 28){
day = Integer.parseInt(in.readLine());
if(day < 1 || day > 28){
System.out.println("Please enter day between 1 to 28.");
}
}
}
}
if(year == cd.get(Calendar.YEAR)){
if(month == cd.get(Calendar.MONTH)){
if(day > cd.get(Calendar.DAY_OF_MONTH)){
System.out.print("Invalid date!");
System.exit(0);
}
}
}
}
catch(FileNotFoundException e){
System.out.print("Error opening the file" +
fileName);
System.exit(0);
}
catch(NumberFormatException ne){
System.out.println(ne.getMessage() + " is not a legal entry!");
System.out.println("Please enter number.");
System.exit(0);
}
Calendar bd = new GregorianCalendar(year, month, day);
ageYears = cd.get(Calendar.YEAR) - bd.get(Calendar.YEAR);
if(cd.before(new GregorianCalendar(cd.get(Calendar.YEAR), month, day))){
ageYears--;
ageMonths = (12 - (bd.get(Calendar.MONTH) + 1)) + (bd.get(Calendar.MONTH));
if(day > cd.get(Calendar.DAY_OF_MONTH)){
ageDays = day - cd.get(Calendar.DAY_OF_MONTH);
}
else if(day < cd.get(Calendar.DAY_OF_MONTH)){
ageDays = cd.get(Calendar.DAY_OF_MONTH) - day;
}
else {
ageDays = 0;
}
}
else if(cd.after(new GregorianCalendar(cd.get(Calendar.YEAR), month, day))){
ageMonths = (cd.get(Calendar.MONTH) - (bd.get(Calendar.MONTH)));
if(day > cd.get(Calendar.DAY_OF_MONTH))
ageDays = day - cd.get(Calendar.DAY_OF_MONTH) - day;
else if(day < cd.get(Calendar.DAY_OF_MONTH)){
ageDays = cd.get(Calendar.DAY_OF_MONTH) - day;
}
else
ageDays = 0;
}
else {
ageYears = cd.get(Calendar.YEAR) - bd.get(Calendar.YEAR);
ageMonths = 0;
ageDays = 0;
}
outputStream.println("\t\t\t\t\t" + ageYears + " years");
outputStream.close();
System.out.println("Those lines were written to " +fileName);
ans--;
System.out.println("Try again[1=NO, 2=YES]:");
Scanner scan = new Scanner(System.in);
while (!scan.hasNext("[1-2]")){
System.out.println("Enter only 1 and 2");
scan.nextLine();
}
int t = scan.nextInt();
ans = t;
}
while (ans == 2);
}
}
Dani commented: Please format your code properly. -3
resiak -3 Newbie Poster
import java.util.*;
import java.io.*;
import java.io.PrintWriter;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class tondo {
public static void main(String[] args) throws IOException{
int ans = 1;
int day = 1, month = 0, year = 1, ageYears, ageMonths, ageDays;
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
Calendar cd = Calendar.getInstance();
String fileName = "out.txt";
PrintWriter outputStream = null;
do{
try{
outputStream = new PrintWriter(fileName);
outputStream = new PrintWriter(new FileOutputStream("outD.txt",true));
System.out.print(" First Name:");
Scanner keyboard1 = new Scanner(System.in);
while (!keyboard1.hasNext("[A-Za-z]+")) {
System.out.println("Enter Letter only:");
keyboard1.nextLine();
}
String word1 = keyboard1.nextLine();
System.out.print(" Middle Name:");
Scanner keyboard2 = new Scanner(System.in);
while (!keyboard2.hasNext("[A-Za-z]+")) {
System.out.println("Enter Letter Please:");
keyboard2.nextLine();
}
String word2 = keyboard2.nextLine();
int i = word2.indexOf(' ');
int j = word2.lastIndexOf(' ');
String middle = word2.substring(i+1, i+2);
System.out.print(" LastName:");
Scanner keyboard = new Scanner(System.in);
while (!keyboard.hasNext("[A-Za-z]+")) {
System.out.println("Enter Letter only");
keyboard.nextLine();
}
String line1 = keyboard.nextLine();
System.out.print("Gender:");
Scanner keyboard3 = new Scanner(System.in);
System.out.println("Male[1], Female[2]");
while (!keyboard3.hasNext("[1-2]")) {
System.out.println(" enter number 1 and 2 only.");
System.out.println("Male[1], Female[2]");
keyboard3.nextLine();
}
int input = keyboard3.nextInt();
if (input==1){
outputStream.print("Mr." + " "+ word1 + " " + word2 +" "+ line1 );
}
else if(input==2){
outputStream.print("Mrs/Ms."+ " " +word1 + " " +word2 + " " +line1);
}
else if (input!=1){
System.out.println("invalid input");
}
else if(input!=2) {
System.out.println("invalid input");
}
System.out.println(" year of birth : ");
Scanner info = new Scanner(System.in);
while (!info.hasNext("[0-M]+")) {
System.out.println("Enter number Please:");
info.nextLine();
}
year = info.nextInt();
if(year > cd.get(Calendar.YEAR)){
System.out.println("not born yet");
}
while(year > cd.get(Calendar.YEAR)){
year = Integer.parseInt(in.readLine());
if(year > cd.get(Calendar.YEAR)){
System.out.println("Invalid date of birth.");
}
}
System.out.println(" month of birth ");
Scanner info2 = new Scanner(System.in);
while (!info2.hasNext("[0-M]+")) {
System.out.println("Please enter a number:");
info.nextLine();
}
month = info2.nextInt();
if(month < 1 || month > 12){
System.out.println(" enter only month between 1 to 12.");
while(month < 1 || month > 12){
month = Integer.parseInt(in.readLine());
if(month < 1 || month > 12){
System.out.println("only enter month between 1 to 12.");
}
}
}
else{
month--;
if(year == cd.get(Calendar.YEAR)){
if(month > cd.get(Calendar.MONTH)){
System.out.println("Invalid input!");
System.exit(0);
}
}
}
System.out.println(" day of birth ");
Scanner info3 = new Scanner(System.in);
while (!info3.hasNext("[0-M]+")) {
System.out.println("Please enter a number:");
info3.nextLine();
}
day = info3.nextInt();
if(month == 0 || month == 2 || month == 4 || month == 6 || month == 7 || month == 9 || month == 11){
if(day > 31 || day < 1){
System.out.println("Please enter day between 1 to 31.");
while(day > 31 || day < 1){
day = Integer.parseInt(in.readLine());
if(day > 31 || day < 1){
System.out.println("Please enter day between 1 to 31.");
}
}
}
}
else if(month == 3 || month == 5 || month == 8 || month == 10){
if(day > 30 || day < 1){
System.out.println("Please enter day between 1 to 30.");
while(day > 30 || day < 1){
day = Integer.parseInt(in.readLine());
if(day > 30 || day < 1){
System.out.println("Please enter day between 1 to 30.");
}
}
}
}
else{
if(new GregorianCalendar().isLeapYear(year)){
if(day < 1 || day > 29){
System.out.println("Please enter day between 1 to 29.");
while(day < 1 || day > 29){
day = Integer.parseInt(in.readLine());
if(day < 1 || day > 29){
System.out.println("Please enter day between 1 to 29.");
}
}
}
}
else if(day < 1 || day > 28){
System.out.println("Please enter day between 1 to 28.");
while(day < 1 || day > 28){
day = Integer.parseInt(in.readLine());
if(day < 1 || day > 28){
System.out.println("Please enter day between 1 to 28.");
}
}
}
}
if(year == cd.get(Calendar.YEAR)){
if(month == cd.get(Calendar.MONTH)){
if(day > cd.get(Calendar.DAY_OF_MONTH)){
System.out.print("Invalid date!");
System.exit(0);
}
}
}
}
catch(FileNotFoundException e){
System.out.print("Error opening the file" +
fileName);
System.exit(0);
}
catch(NumberFormatException ne){
System.out.println(ne.getMessage() + " is not a legal entry!");
System.out.println("Please enter number.");
System.exit(0);
}
Calendar bd = new GregorianCalendar(year, month, day);
ageYears = cd.get(Calendar.YEAR) - bd.get(Calendar.YEAR);
if(cd.before(new GregorianCalendar(cd.get(Calendar.YEAR), month, day))){
ageYears--;
ageMonths = (12 - (bd.get(Calendar.MONTH) + 1)) + (bd.get(Calendar.MONTH));
if(day > cd.get(Calendar.DAY_OF_MONTH)){
ageDays = day - cd.get(Calendar.DAY_OF_MONTH);
}
else if(day < cd.get(Calendar.DAY_OF_MONTH)){
ageDays = cd.get(Calendar.DAY_OF_MONTH) - day;
}
else {
ageDays = 0;
}
}
else if(cd.after(new GregorianCalendar(cd.get(Calendar.YEAR), month, day))){
ageMonths = (cd.get(Calendar.MONTH) - (bd.get(Calendar.MONTH)));
if(day > cd.get(Calendar.DAY_OF_MONTH))
ageDays = day - cd.get(Calendar.DAY_OF_MONTH) - day;
else if(day < cd.get(Calendar.DAY_OF_MONTH)){
ageDays = cd.get(Calendar.DAY_OF_MONTH) - day;
}
else
ageDays = 0;
}
else {
ageYears = cd.get(Calendar.YEAR) - bd.get(Calendar.YEAR);
ageMonths = 0;
ageDays = 0;
}
outputStream.println("\t\t\t\t\t" + ageYears + " years");
outputStream.close();
System.out.println("Those lines were written to " +fileName);
ans--;
System.out.println("Try again[1=NO, 2=YES]:");
Scanner scan = new Scanner(System.in);
while (!scan.hasNext("[1-2]")){
System.out.println("Enter only 1 and 2");
scan.nextLine();
}
int t = scan.nextInt();
ans = t;
}
while (ans == 2);
}
}
resiak -3 Newbie Poster
import java.util.*;
import java.io.*;
import java.io.PrintWriter;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class tondo {
public static void main(String[] args) throws IOException{
int ans = 1;
int day = 1, month = 0, year = 1, ageYears, ageMonths, ageDays;
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
Calendar cd = Calendar.getInstance();
String fileName = "out.txt";
PrintWriter outputStream = null;
do{
try{
outputStream = new PrintWriter(fileName);
outputStream = new PrintWriter(new FileOutputStream("outD.txt",true));
System.out.print(" First Name:");
Scanner keyboard1 = new Scanner(System.in);
while (!keyboard1.hasNext("[A-Za-z]+")) {
System.out.println("Enter Letter only:");
keyboard1.nextLine();
}
String word1 = keyboard1.nextLine();
System.out.print(" Middle Name:");
Scanner keyboard2 = new Scanner(System.in);
while (!keyboard2.hasNext("[A-Za-z]+")) {
System.out.println("Enter Letter Please:");
keyboard2.nextLine();
}
String word2 = keyboard2.nextLine();
int i = word2.indexOf(' ');
int j = word2.lastIndexOf(' ');
String middle = word2.substring(i+1, i+2);
System.out.print(" LastName:");
Scanner keyboard = new Scanner(System.in);
while (!keyboard.hasNext("[A-Za-z]+")) {
System.out.println("Enter Letter only");
keyboard.nextLine();
}
String line1 = keyboard.nextLine();
System.out.print("Gender:");
Scanner keyboard3 = new Scanner(System.in);
System.out.println("Male[1], Female[2]");
while (!keyboard3.hasNext("[1-2]")) {
System.out.println(" enter number 1 and 2 only.");
System.out.println("Male[1], Female[2]");
keyboard3.nextLine();
}
int input = keyboard3.nextInt();
if (input==1){
outputStream.print("Mr." + " "+ word1 + " " + word2 +" "+ line1 );
}
else if(input==2){
outputStream.print("Mrs/Ms."+ " " +word1 + " " +word2 + " " +line1);
}
else if (input!=1){
System.out.println("invalid input");
}
else if(input!=2) {
System.out.println("invalid input");
}
System.out.println(" year of birth : ");
Scanner info = new Scanner(System.in);
while (!info.hasNext("[0-M]+")) {
System.out.println("Enter number Please:");
info.nextLine();
}
year = info.nextInt();
if(year > cd.get(Calendar.YEAR)){
System.out.println("not born yet");
}
while(year > cd.get(Calendar.YEAR)){
year = Integer.parseInt(in.readLine());
if(year > cd.get(Calendar.YEAR)){
System.out.println("Invalid date of birth.");
}
}
System.out.println(" month of birth ");
Scanner info2 = new Scanner(System.in);
while (!info2.hasNext("[0-M]+")) {
System.out.println("Please enter a number:");
info.nextLine();
}
month = info2.nextInt();
if(month < 1 || month > 12){
System.out.println(" enter only month between 1 to 12.");
while(month < 1 || month > 12){
month = Integer.parseInt(in.readLine());
if(month < 1 || month > 12){
System.out.println("only enter month between 1 to 12.");
}
}
}
else{
month--;
if(year == cd.get(Calendar.YEAR)){
if(month > cd.get(Calendar.MONTH)){
System.out.println("Invalid input!");
System.exit(0);
}
}
}
System.out.println(" day of birth ");
Scanner info3 = new Scanner(System.in);
while (!info3.hasNext("[0-M]+")) {
System.out.println("Please enter a number:");
info3.nextLine();
}
day = info3.nextInt();
if(month == 0 || month == 2 || month == 4 || month == 6 || month == 7 || month == 9 || month == 11){
if(day > 31 || day < 1){
System.out.println("Please enter day between 1 to 31.");
while(day > 31 || day < 1){
day = Integer.parseInt(in.readLine());
if(day > 31 || day < 1){
System.out.println("Please enter day between 1 to 31.");
}
}
}
}
else if(month == 3 || month == 5 || month == 8 || month == 10){
if(day > 30 || day < 1){
System.out.println("Please enter day between 1 to 30.");
while(day > 30 || day < 1){
day = Integer.parseInt(in.readLine());
if(day > 30 || day < 1){
System.out.println("Please enter day between 1 to 30.");
}
}
}
}
else{
if(new GregorianCalendar().isLeapYear(year)){
if(day < 1 || day > 29){
System.out.println("Please enter day between 1 to 29.");
while(day < 1 || day > 29){
day = Integer.parseInt(in.readLine());
if(day < 1 || day > 29){
System.out.println("Please enter day between 1 to 29.");
}
}
}
}
else if(day < 1 || day > 28){
System.out.println("Please enter day between 1 to 28.");
while(day < 1 || day > 28){
day = Integer.parseInt(in.readLine());
if(day < 1 || day > 28){
System.out.println("Please enter day between 1 to 28.");
}
}
}
}
if(year == cd.get(Calendar.YEAR)){
if(month == cd.get(Calendar.MONTH)){
if(day > cd.get(Calendar.DAY_OF_MONTH)){
System.out.print("Invalid date!");
System.exit(0);
}
}
}
}
catch(FileNotFoundException e){
System.out.print("Error opening the file" +
fileName);
System.exit(0);
}
catch(NumberFormatException ne){
System.out.println(ne.getMessage() + " is not a legal entry!");
System.out.println("Please enter number.");
System.exit(0);
}
Calendar bd = new GregorianCalendar(year, month, day);
ageYears = cd.get(Calendar.YEAR) - bd.get(Calendar.YEAR);
if(cd.before(new GregorianCalendar(cd.get(Calendar.YEAR), month, day))){
ageYears--;
ageMonths = (12 - (bd.get(Calendar.MONTH) + 1)) + (bd.get(Calendar.MONTH));
if(day > cd.get(Calendar.DAY_OF_MONTH)){
ageDays = day - cd.get(Calendar.DAY_OF_MONTH);
}
else if(day < cd.get(Calendar.DAY_OF_MONTH)){
ageDays = cd.get(Calendar.DAY_OF_MONTH) - day;
}
else {
ageDays = 0;
}
}
else if(cd.after(new GregorianCalendar(cd.get(Calendar.YEAR), month, day))){
ageMonths = (cd.get(Calendar.MONTH) - (bd.get(Calendar.MONTH)));
if(day > cd.get(Calendar.DAY_OF_MONTH))
ageDays = day - cd.get(Calendar.DAY_OF_MONTH) - day;
else if(day < cd.get(Calendar.DAY_OF_MONTH)){
ageDays = cd.get(Calendar.DAY_OF_MONTH) - day;
}
else
ageDays = 0;
}
else {
ageYears = cd.get(Calendar.YEAR) - bd.get(Calendar.YEAR);
ageMonths = 0;
ageDays = 0;
}
outputStream.println("\t\t\t\t\t" + ageYears + " years");
outputStream.close();
System.out.println("Those lines were written to " +fileName);
ans--;
System.out.println("Try again[1=NO, 2=YES]:");
Scanner scan = new Scanner(System.in);
while (!scan.hasNext("[1-2]")){
System.out.println("Enter only 1 and 2");
scan.nextLine();
}
int t = scan.nextInt();
ans = t;
}
while (ans == 2);
}
}
zeroliken 79 Nearly a Posting Virtuoso
please use the Code button on your editor to retain the formatting, it's much easier to read that way,
also could you explain what's the problem/errors with the code?
camnuj 0 Newbie Poster
walay lain imba sa kalibutan .. kaiser nato or itatago natin sa pangalan na " RESIAK " . ahahaha
it is useful to me .. thank you RESIAK for sharing this java program .
camnuj 0 Newbie Poster
zeroliken : : can you give me a code that it read,edit,and write in text file ?
camnuj 0 Newbie Poster
RESIAK :: can you explain your code >? .please !!
resiak -3 Newbie Poster
import java.util.*;
import java.io.*;
import java.io.PrintWriter;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class tondo {
public static void main(String[] args) throws IOException{
int ans = 1;
int day = 1, month = 0, year = 1, ageYears, ageMonths, ageDays;
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
Calendar cd = Calendar.getInstance();
String fileName = "out.txt";
PrintWriter outputStream = null;
do{
try{
outputStream = new PrintWriter(fileName);
outputStream = new PrintWriter(new FileOutputStream("outD.txt",true));
System.out.print(" First Name:");
Scanner keyboard1 = new Scanner(System.in);
while (!keyboard1.hasNext("[A-Za-z]+")) {
System.out.println("Enter Letter only:");
keyboard1.nextLine();
}
String word1 = keyboard1.nextLine();
System.out.print(" Middle Name:");
Scanner keyboard2 = new Scanner(System.in);
while (!keyboard2.hasNext("[A-Za-z]+")) {
System.out.println("Enter Letter Please:");
keyboard2.nextLine();
}
String word2 = keyboard2.nextLine();
int i = word2.indexOf(' ');
int j = word2.lastIndexOf(' ');
String middle = word2.substring(i+1, i+2);
System.out.print(" LastName:");
Scanner keyboard = new Scanner(System.in);
while (!keyboard.hasNext("[A-Za-z]+")) {
System.out.println("Enter Letter only");
keyboard.nextLine();
}
String line1 = keyboard.nextLine();
System.out.print("Gender:");
Scanner keyboard3 = new Scanner(System.in);
System.out.println("Male[1], Female[2]");
while (!keyboard3.hasNext("[1-2]")) {
System.out.println(" enter number 1 and 2 only.");
System.out.println("Male[1], Female[2]");
keyboard3.nextLine();
}
int input = keyboard3.nextInt();
if (input==1){
outputStream.print("Mr." + " "+ word1 + " " + word2 +" "+ line1 );
}
else if(input==2){
outputStream.print("Mrs/Ms."+ " " +word1 + " " +word2 + " " +line1);
}
else if (input!=1){
System.out.println("invalid input");
}
else if(input!=2) {
System.out.println("invalid input");
}
System.out.println(" year of birth : ");
Scanner info = new Scanner(System.in);
while (!info.hasNext("[0-M]+")) {
System.out.println("Enter number Please:");
info.nextLine();
}
year = info.nextInt();
if(year > cd.get(Calendar.YEAR)){
System.out.println("not born yet");
}
while(year > cd.get(Calendar.YEAR)){
year = Integer.parseInt(in.readLine());
if(year > cd.get(Calendar.YEAR)){
System.out.println("Invalid date of birth.");
}
}
System.out.println(" month of birth ");
Scanner info2 = new Scanner(System.in);
while (!info2.hasNext("[0-M]+")) {
System.out.println("Please enter a number:");
info.nextLine();
}
month = info2.nextInt();
if(month < 1 || month > 12){
System.out.println(" enter only month between 1 to 12.");
while(month < 1 || month > 12){
month = Integer.parseInt(in.readLine());
if(month < 1 || month > 12){
System.out.println("only enter month between 1 to 12.");
}
}
}
else{
month--;
if(year == cd.get(Calendar.YEAR)){
if(month > cd.get(Calendar.MONTH)){
System.out.println("Invalid input!");
System.exit(0);
}
}
}
System.out.println(" day of birth ");
Scanner info3 = new Scanner(System.in);
while (!info3.hasNext("[0-M]+")) {
System.out.println("Please enter a number:");
info3.nextLine();
}
day = info3.nextInt();
if(month == 0 || month == 2 || month == 4 || month == 6 || month == 7 || month == 9 || month == 11){
if(day > 31 || day < 1){
System.out.println("Please enter day between 1 to 31.");
while(day > 31 || day < 1){
day = Integer.parseInt(in.readLine());
if(day > 31 || day < 1){
System.out.println("Please enter day between 1 to 31.");
}
}
}
}
else if(month == 3 || month == 5 || month == 8 || month == 10){
if(day > 30 || day < 1){
System.out.println("Please enter day between 1 to 30.");
while(day > 30 || day < 1){
day = Integer.parseInt(in.readLine());
if(day > 30 || day < 1){
System.out.println("Please enter day between 1 to 30.");
}
}
}
}
else{
if(new GregorianCalendar().isLeapYear(year)){
if(day < 1 || day > 29){
System.out.println("Please enter day between 1 to 29.");
while(day < 1 || day > 29){
day = Integer.parseInt(in.readLine());
if(day < 1 || day > 29){
System.out.println("Please enter day between 1 to 29.");
}
}
}
}
else if(day < 1 || day > 28){
System.out.println("Please enter day between 1 to 28.");
while(day < 1 || day > 28){
day = Integer.parseInt(in.readLine());
if(day < 1 || day > 28){
System.out.println("Please enter day between 1 to 28.");
}
}
}
}
if(year == cd.get(Calendar.YEAR)){
if(month == cd.get(Calendar.MONTH)){
if(day > cd.get(Calendar.DAY_OF_MONTH)){
System.out.print("Invalid date!");
System.exit(0);
}
}
}
}
catch(FileNotFoundException e){
System.out.print("Error opening the file" +
fileName);
System.exit(0);
}
catch(NumberFormatException ne){
System.out.println(ne.getMessage() + " is not a legal entry!");
System.out.println("Please enter number.");
System.exit(0);
}
Calendar bd = new GregorianCalendar(year, month, day);
ageYears = cd.get(Calendar.YEAR) - bd.get(Calendar.YEAR);
if(cd.before(new GregorianCalendar(cd.get(Calendar.YEAR), month, day))){
ageYears--;
ageMonths = (12 - (bd.get(Calendar.MONTH) + 1)) + (bd.get(Calendar.MONTH));
if(day > cd.get(Calendar.DAY_OF_MONTH)){
ageDays = day - cd.get(Calendar.DAY_OF_MONTH);
}
else if(day < cd.get(Calendar.DAY_OF_MONTH)){
ageDays = cd.get(Calendar.DAY_OF_MONTH) - day;
}
else {
ageDays = 0;
}
}
else if(cd.after(new GregorianCalendar(cd.get(Calendar.YEAR), month, day))){
ageMonths = (cd.get(Calendar.MONTH) - (bd.get(Calendar.MONTH)));
if(day > cd.get(Calendar.DAY_OF_MONTH))
ageDays = day - cd.get(Calendar.DAY_OF_MONTH) - day;
else if(day < cd.get(Calendar.DAY_OF_MONTH)){
ageDays = cd.get(Calendar.DAY_OF_MONTH) - day;
}
else
ageDays = 0;
}
else {
ageYears = cd.get(Calendar.YEAR) - bd.get(Calendar.YEAR);
ageMonths = 0;
ageDays = 0;
}
outputStream.println("\t\t\t\t\t" + ageYears + " years");
outputStream.close();
System.out.println("Those lines were written to " +fileName);
ans--;
System.out.println("Try again[1=NO, 2=YES]:");
Scanner scan = new Scanner(System.in);
while (!scan.hasNext("[1-2]")){
System.out.println("Enter only 1 and 2");
scan.nextLine();
}
int t = scan.nextInt();
ans = t;
}
while (ans == 2);
}
}
camnuj 0 Newbie Poster
explain
resiak -3 Newbie Poster
this program will output first name ,last name, ang gender in the notepad..
and this output i am going to edit.
DavidKroukamp 105 Master Poster Team Colleague Featured Poster
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