Tag Archives for boxing

Boxing with Java

By Tom | Published February 19, 2012

A bug was recently identified in a project I’m working on. Check the following code out:

private void addItem(Integer itemCode, Item itemFromDb){
    if(itemCode == itemFromDb.getItemCode()){
        //foo
    } else{
        //bar
    }
}

private void addItem(Integer itemCode, Item itemFromDb){

if(itemCode == itemFromDb.getItemCode()){

//foo

} else{

//bar

}

Naughty naughty. I had done a very silly thing and used == to test equality of Integer objects! As we all know, when comparing equality on objects we should be using .equals(). However, this bug was intermittent. Comparing [...]

Posted in Programming, Technology | Also tagged autoboxing, autounboxing, java, primitive, programming, software, unboxing, wrapper 15 Comments