Creating new object in java error

Question

I wrote this code in the main:

if (startAmount>0) //create new cashier object with or without a start amount
    Cashier newCashier = new Cashier(startAmount);
else Cashier newCashier = new Cashier();

and got an compile error for the second and third lines:

Multiple markers at this line
    - Cashier cannot be resolved to a variable
    - Syntax error on token "newCashier", delete

and:

Multiple markers at this line
    - Cashier cannot be resolved to a variable
    - Syntax error, insert "AssignmentOperator Expression" to complete 
     Assignment
    - Syntax error, insert ";" to complete Statement

but when i write the code like this with brackets:

if (startAmount>0)//create new cashier object with or without a start amount
{
    Cashier newCashier = new Cashier(startAmount);
}
else{ Cashier newCashier = new Cashier();}

it seems to be okay, no compile errors. can someone help me understand why?

remove the assignment, you don't use the variable newCashier anyway. — Augusto
– Augusto, Commented Mar 31, 2014 at 14:20

Javaboy · Accepted Answer · 2014-03-31 14:20:41Z

3

Why are you creating shadow variable for newCachier reference, you could rather do this

Cashier newCashier = null;
if (startAmount>0) //create new cashier object with or without a start amount
    newCashier = new Cashier(startAmount);
else 
     newCashier = new Cashier();

answered Mar 31, 2014 at 14:20

Javaboy

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2 Comments

Yuval Levy Over a year ago

What is the difference between what you wrote and what i wrote? In both cases was created one object no?

Yuval Levy Over a year ago

what do you mean "shadow variable"? it will create only once dependent on the if statement

malle · Accepted Answer · 2014-03-31 14:26:27Z

0

It's always better to add those curly braces. Cause you won't forget to add them when you extend your code, which leads to strange behavior otherwise.

I think your exception of the first might came cause you forgot to put your else statement in a new line, but I am not sure.

answered Mar 31, 2014 at 14:26

malle

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