public class Bank
{
private int bal=20000,ano=12345;
private short pin=5555;
private boolean f=false;
public boolean lock=false;

public String login(int a, short p)
{
if(a==ano && p==pin)
{
f=true;
return("Your Bal is...."+bal);
}
else
{
f=false;
return("Sorry! Invalid A/c Num or PIN num! Try Again.");
}
}

public String deposit(int amt)
{
if(f)
{
bal+=amt;
return("Amount Deposited");
}
else
return("Plz login first.");
}

public String withdraw(int amt)
{
if(f)
{
bal-=amt;
return("Withdrawl Successful.");
}
else
return("Plz login first.");
}

public String getBal()
{
if(f)
return("Your Bal is...."+bal);
else
return("Plz login first.");
}
}