I'm pretty new to coding so please bear with me, I am just experimenting with ways to shuffle an array for eventual use in shuffling a deck of cards in a card game I am creating in Java. I know that index 5 is out of bounds for length 5 but what is puzzling to me is that the error doesn't ALWAYS pop up. Sometimes I try to run my code and it works just fine, other times I get the error even if I haven't changed anything between times that I run it.
public class Card{
public static void shuffle(Object[] array) {
int noOfCards = array.length;
for (int i = 0; i < noOfCards; i++) {
int s = i + (int)(Math.random() * (noOfCards - 1));
Object temp = array[s]; //this is the first line it says has a problem
array[s] = array[i];
array[i] = temp;
}
}
public static void main(String[] args) {
String[] strOfCards = {"A","B","C","D","E"};
Card.shuffle(strOfCards); //this is the second line that has a problem
for(int i = 0; i < strOfCards.length; i++) {
System.out.println(strOfCards[i] + " ");
}
}
}
I have no idea how to change the flawed lines, any suggestions are welcome! *** i have tried changing the number of letters in the string but then the error changes with it ie "Index 6 out of bounds for length 6"
I'm pretty new to coding so please bear with me, I am just experimenting with ways to shuffle an array for eventual use in shuffling a deck of cards in a card game I am creating in Java. I know that index 5 is out of bounds for length 5 but what is puzzling to me is that the error doesn't ALWAYS pop up. Sometimes I try to run my code and it works just fine, other times I get the error even if I haven't changed anything between times that I run it.
public class Card{
public static void shuffle(Object[] array) {
int noOfCards = array.length;
for (int i = 0; i < noOfCards; i++) {
int s = i + (int)(Math.random() * (noOfCards - 1));
Object temp = array[s]; //this is the first line it says has a problem
array[s] = array[i];
array[i] = temp;
}
}
public static void main(String[] args) {
String[] strOfCards = {"A","B","C","D","E"};
Card.shuffle(strOfCards); //this is the second line that has a problem
for(int i = 0; i < strOfCards.length; i++) {
System.out.println(strOfCards[i] + " ");
}
}
}
I have no idea how to change the flawed lines, any suggestions are welcome! *** i have tried changing the number of letters in the string but then the error changes with it ie "Index 6 out of bounds for length 6"
I'm pretty new to coding so please bear with me, I am just experimenting with ways to shuffle an array for eventual use in shuffling a deck of cards in a card game I am creating in Java. I know that index 5 is out of bounds for length 5 but what is puzzling to me is that the error doesn't ALWAYS pop up. Sometimes I try to run my code and it works just fine, other times I get the error even if I haven't changed anything between times that I run it.
public class Card{
public static void shuffle(Object[] array) {
int noOfCards = array.length;
for (int i = 0; i < noOfCards; i++) {
int s = i + (int)(Math.random() * (noOfCards - 1));
Object temp = array[s]; //this is the first line it says has a problem
array[s] = array[i];
array[i] = temp;
}
}
public static void main(String[] args) {
String[] strOfCards = {"A","B","C","D","E"};
Card.shuffle(strOfCards); //this is the second line that has a problem
for(int i = 0; i < strOfCards.length; i++) {
System.out.println(strOfCards[i] + " ");
}
}
}
I have no idea how to change the flawed lines, any suggestions are welcome! *** i have tried changing the number of letters in the string but then the error changes with it ie "Index 6 out of bounds for length 6"
I'm pretty new to coding so please bear with me, I am just experimenting with ways to shuffle an array for eventual use in shuffling a deck of cards in a card game I am creating in Java. I know that index 5 is out of bounds for length 5 but what is puzzling to me is that the error doesn't ALWAYS pop up. Sometimes I try to run my code and it works just fine, other times I get the error even if I haven't changed anything between times that I run it.
public class Card{
public static void shuffle(Object[] array) {
int noOfCards = array.length;
for (int i = 0; i < noOfCards; i++) {
int s = i + (int)(Math.random() * (noOfCards - 1));
Object temp = array[s]; //this is the first line it says has a problem
array[s] = array[i];
array[i] = temp;
}
}
public static void main(String[] args) {
String[] strOfCards = {"A","B","C","D","E"};
Card.shuffle(strOfCards); //this is the second line that has a problem
for(int i = 0; i < strOfCards.length; i++) {
System.out.println(strOfCards[i] + " ");
}
}
}
I have no idea how to change the flawed lines, any suggestions are welcome! *** i have tried changing the number of letters in the string but then the error changes with it ie "Index 6 out of bounds for length 6"
I'm pretty new to coding so please bear with me, I am just experimenting with ways to shuffle an array for eventual use in shuffling a deck of cards in a card game I am creating in Java. I know that index 5 is out of bounds for length 5 but what is puzzling to me is that the error doesn't ALWAYS pop up. Sometimes I try to run my code and it works just fine, other times I get the error even if I haven't changed anything between times that I run it.
public class Card{
public static void shuffle(Object[] array) {
int noOfCards = array.length;
for (int i = 0; i < noOfCards; i++) {
int s = i + (int)(Math.random() * (noOfCards - 1));
Object temp = array[s]; //this is the first line it says has a problem
array[s] = array[i];
array[i] = temp;
}
}
public static void main(String[] args) {
String[] strOfCards = {"A","B","C","D","E"};
Card.shuffle(strOfCards); //this is the second line that has a problem
for(int i = 0; i < strOfCards.length; i++) {
System.out.println(strOfCards[i] + " ");
}
}
}
I have no idea how to change the flawed lines, any suggestions are welcome! *** i have tried changing the number of letters in the string but then the error changes with it ie "Index 6 out of bounds for length 6"
I'm pretty new to coding so please bear with me, I am just experimenting with ways to shuffle an array for eventual use in shuffling a deck of cards in a card game I am creating in Java. I know that index 5 is out of bounds for length 5 but what is puzzling to me is that the error doesn't ALWAYS pop up. Sometimes I try to run my code and it works just fine, other times I get the error even if I haven't changed anything between times that I run it.
public class Card{
public static void shuffle(Object[] array) {
int noOfCards = array.length;
for (int i = 0; i < noOfCards; i++) {
int s = i + (int)(Math.random() * (noOfCards - 1));
Object temp = array[s]; //this is the first line it says has a problem
array[s] = array[i];
array[i] = temp;
}
}
public static void main(String[] args) {
String[] strOfCards = {"A","B","C","D","E"};
Card.shuffle(strOfCards); //this is the second line that has a problem
for(int i = 0; i < strOfCards.length; i++) {
System.out.println(strOfCards[i] + " ");
}
}
}
I have no idea how to change the flawed lines, any suggestions are welcome! *** i have tried changing the number of letters in the string but then the error changes with it ie "Index 6 out of bounds for length 6"
M getting the same issue with this code and still no idea how to solve it
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.io.IOException;
import java.util.List;
import java.util.ArrayList;
import javax.swing.JOptionPane;
public class Main
{
public static void main (String[] args)
{
while (true)
{
String number = JOptionPane.showInputDialog("Please Enter \n"
+ "1 for 'Add new Employee'"
+ "\n 2 for 'Search in employee'"
+ "\n 3 for 'Exit'");
int convertnumber = Integer.parseInt(number);
if (convertnumber == 1)
{
addEmployee();
}
else if (convertnumber == 2)
{
String eId = JOptionPane.showInputDialog("Enter ID to search");
searchEmplye(eId);
}
else if (convertnumber == 3)
{
JOptionPane.showMessageDialog(null, "Developed By: BC180401942 SHEHZAD ADEEL");
System.exit(0);
}
else
{
JOptionPane.showMessageDialog(null, "Invalid input");
}
}
}
public static void searchEmplye(String eId)
{
try
{
String tokens[] = null;
String id, name, dob, qual, expe, pays;
FileReader fr = new FileReader("empData.txt");
BufferedReader br = new BufferedReader(fr);
String line = br.readLine();
if (line == null)
{
JOptionPane.showMessageDialog(null, "Employee Not found");
}
while (line != null)
{
tokens = line.split (",");
id = tokens[0];
name = tokens[1];
dob = tokens[2];
qual = tokens[3];
expe = tokens[4];
pays = tokens[5];
Employee emp = new Employee (id, name, dob, qual, expe, pays);
ArrayList list = new ArrayList();
list.add(emp);
line = br.readLine();
/*
for (int i = 0; i < list.size(); i++)
{
Employee p = (Employee) list.get(i);
if (eId.equals(p.getEmpId()))
{
JOptionPane.showMessageDialog(null, "Employee: \n"
+ "Employee ID: " + p.getEmpId()
+ " \n Employee Name: " +p.getEmpName()
+ " \n Employee DOB: " + p.getEmpDoB()
+ " \n Qualification: " + p.getEmpQualf()
+ " \n Experience: " + p.getEmpExp()
+ " \n Pay Scal: " + p.getEmpPSacle()
);
}
*/
for (int i = 0; i < list.size(); i++)
{
Employee p = (Employee) list.get(i);
if (eId.equals(p.getEmpId()))
{
JOptionPane.showMessageDialog( null, "Employee: \n" +
"EmpId: " + p.getEmpId() + "\n" +
"Name: " + p.getEmpName() + "\n" +
"DoB: " + p.getEmpDoB() + "\n" +
"Qualification: " + p.getEmpQualf() + "\n" +
"Experience: " + p.getEmpExp() + "\n" +
"PayScale: " + p.getEmpPScale() );
}
else
{
JOptionPane.showMessageDialog(null, "Employee Not found");
}
}
}
br.close();
fr.close();
}
catch (Exception ex)
{
ex.printStackTrace();
}
}
public static void addEmployee()
{
try
{
ArrayList list = new ArrayList();
String id = JOptionPane.showInputDialog("Enter Employee ID: ");
String name = JOptionPane.showInputDialog("Enter name: ");
String dob = JOptionPane.showInputDialog("Enter DoB (year): ");
String qual = JOptionPane.showInputDialog("Enter Qualification: ");
String exp = JOptionPane.showInputDialog("Enter Employee experience (in months): ");
String pays = JOptionPane.showInputDialog("Enter Employee Pay Scale (in number): ");
Employee emp = new Employee (id, name, dob, qual, exp, pays);
list.add(emp);
/*
ArrayList list = new ArrayList();
String id = JOptionPane.showInputDialog("Enter ID ");
String name = JOptionPane.showInputDialog("Enter Name ");
String dob = JOptionPane.showInputDialog("Enter DOB ");
String qualification = JOptionPane.showInputDialog("Enter qualification ");
String experience = JOptionPane.showInputDialog("Enter Employee Experience");
String paScale = JOptionPane.showInputDialog("Enter Employee pay scale ");
Employee emp = new Employee(id, name, qualification, experience, paScale);
list.add(emp);
*/
String line;
FileWriter fw = new FileWriter("empData.txt");
PrintWriter pw = new PrintWriter(fw);
for (int i = 0; i < list.size(); i++)
{
emp = (Employee) list.get(i);
//line = emp.getEmpId() + "," + emp.getEmpName() + "," + emp.getEmpDoB() + "," + emp.getEmpQualf() + "," + emp.getEmpExp() + "," + emp.getEmpPSacle();
line = emp.getEmpId() + "," +
emp.getEmpName() + "," +
emp.getEmpDoB() + "," +
emp.getEmpQualf() + "," +
emp.getEmpPScale();
pw.println(line);
}
pw.flush();
pw.close();
fw.close();
}
catch (IOException ioEx)
{
System.out.println(ioEx);
}
}
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.