问题描述
我有一个Banking []数组，其限制为100（101）个对象，一个用户创建一个帐户，并且当他们要登录底部运行的小方法来查找时，他们的帐户作为对象插入到数组中他们的帐户，但是它永远找不到对象。 我不确定为什么，有什么想法吗？
public static void main(String[] args) {
Banking[] uaccounts;
uaccounts = new Banking[100]; // setting up array
int arrcount = 0; // setting counter for array
int menu = 1; // Creating a variable to loop menu
while (menu == 1) { //Creating the loop for the menu
System.out.println("|=================================================|"); // drawing the menu
System.out.println("| |");
System.out.println("| MAIN MENU |");
System.out.println("| 1. Create Account (BANK MANAGER RESTRICTED) |");
System.out.println("| 2. Check Account Balance |");
System.out.println("| 3. Deposit Into Account |");
System.out.println("| 4. Withdraw From Account |");
System.out.println("| 5. Quit |");
System.out.println("| |");
System.out.println("|=================================================|");
int uinput = Integer.parseInt(JOptionPane.showInputDialog("Please select an option from above(1 - 4):"));
if (uinput == 1) { // initiating menu option 1
String full_name = JOptionPane.showInputDialog("Please enter clients full name:"); // creating some variables
String address = JOptionPane.showInputDialog("Please enter the clients address:");
String password = JOptionPane.showInputDialog("Please enter the clients password:");
int accid = RandomInt(100000, 999999);
System.out.println("Customers Account ID:" + accid);
double balance = Double.parseDouble(JOptionPane.showInputDialog("Please enter the client's starting balance:"));
uaccounts[arrcount] = new Banking(full_name, address, accid, balance, password); // creating objectg in array
arrcount = arrcount + 1; //adding to counter for next time
}
if (uinput == 2) { // initiating menu option 2
int acc_id_input = Integer.parseInt(JOptionPane.showInputDialog("Please enter your account ID:"));
String password_input = JOptionPane.showInputDialog("Please enter your password:");
int arrcount2 = arrcount - 1;
LoginUser(acc_id_input, password_input, uaccounts, arrcount2);
}
public static void LoginUser(int account_id, String password, Banking[] uaccounts, int arrcount) {
boolean found = false;
int accIndex = 0;
for (int i = 0; i < arrcount - 1; i++) {
if ((uaccounts[i].accid == account_id) && (uaccounts[i].password.equals(password))) {
found = true;
accIndex = i;
break;
} else {
found = false;
}
}
1楼
我在上面的代码中做了很少的更改，并且工作正常。 我必须使用Math.random（）而不是RendomInt（）。 而且我用过useraccounts.length而不是arcount变量。
public class Test {
public static void main(String[] args) {
Banking[] uaccounts;
uaccounts = new Banking[100]; // setting up array
int arrcount = 0; // setting counter for array
int menu = 1; // Creating a variable to loop menu
while (menu == 1) { // Creating the loop for the menu
System.out.println("|=================================================|");
System.out.println("| |");
System.out.println("| MAIN MENU |");
System.out.println("| 1. Create Account (BANK MANAGER RESTRICTED) |");
System.out.println("| 2. Check Account Balance |");
System.out.println("| 3. Deposit Into Account |");
System.out.println("| 4. Withdraw From Account |");
System.out.println("| 5. Quit |");
System.out.println("| |");
System.out.println("|=================================================|");
int uinput = Integer.parseInt(JOptionPane.showInputDialog("Please select an option from above(1 - 4):"));
if (uinput == 1) { // initiating menu option 1
String full_name = JOptionPane.showInputDialog("Please enter clients full name:"); // creating some
// variables
String address = JOptionPane.showInputDialog("Please enter the clients address:");
String password = JOptionPane.showInputDialog("Please enter the clients password:");
int accid = (int) Math.random();// t(100000, 999999);
System.out.println("Customers Account ID:" + accid);
double balance = Double
.parseDouble(JOptionPane.showInputDialog("Please enter the client's starting balance:"));
uaccounts[arrcount] = new Banking(full_name, address, accid, balance, password); // creating objectg in
// array
arrcount = arrcount + 1; // adding to counter for next time
}
if (uinput == 2) { // initiating menu option 2
int acc_id_input = Integer.parseInt(JOptionPane.showInputDialog("Please enter your account ID:"));
String password_input = JOptionPane.showInputDialog("Please enter your password:");
int arrcount2 = arrcount - 1;
System.out.println("found" + LoginUser(acc_id_input, password_input, uaccounts, arrcount2));
}
}
}
public static boolean LoginUser(int account_id, String password, Banking[] uaccounts, int arrcount) {
boolean found = false;
int accIndex = 0;
for (int i = 0; i < uaccounts.length; i++) {
if ((uaccounts[i].accid == account_id) && (uaccounts[i].pass.equals(password))) {
found = true;
accIndex = i;
break;
} else {
found = false;
}
}
return found;
}
}