Sha256: 847f9b57e7042d3268aadfe0b40a3a75801cc1c2e6d17df8eee7da74dcd374ad
Contents?: true
Size: 1.24 KB
Versions: 71
Compression:
Stored size: 1.24 KB
Contents
class BankAccount {
boolean isOpen=false;
int balance=0;
// You cannot do any operations before you open the account.
// An account opens with a balance of 0
// You can reopen an account
synchronized void open(){
isOpen=true;
balance=0;
}
// you cannot do any operations after you close the account
synchronized void close() {
checkOpen();
balance=0;
isOpen=false;
}
// this should increment the balance
// you cannot deposit into a closed account
// you cannot deposit a negative amount
synchronized void deposit(int amount) {
checkOpen();
if(amount<=0)
throw new Exception("Amount must be greater than 0")
balance+=amount;
}
synchronized void withdraw(int amount) {
checkOpen();
if(amount<=0)
throw new Exception("Amount must be greater than 0")
if(amount>balance)
throw new Exception("You cannot withdraw more than your balance")
balance -= amount;
}
synchronized int getBalance(){
checkOpen();
return balance
}
void checkOpen() {
if(!isOpen)
throw new Exception("Account must be open")
}
}
Version data entries
71 entries across 71 versions & 1 rubygems