Does Java, sometimes, do automatic type conversion?

[seb petterson]

I've become a bit confused at times when I have accessed bean properties. For example, I have a bean that in one scenario should have a property, an array, that is null, but when I access it its an array of length 0 instead.

Another weird behaviour is with say bean1 with an Integer property and bean2 with a String property. At one point I want to do bean1.IntegerProp -> bean2.StringProp. So I wrote:

 bean2.setStringProp(Integer.toString(bean1.getIntegerProp()) 

And it compiles and works. But when I think about it, it shouldnt work. Because Integer.toString() doesnt take an Integer as argument, only int. Where's the magic?

seb

[M Beck]

Originally posted by seb petterson:

 bean2.setStringProp(Integer.toString(bean1.getIntegerProp()) 

And it compiles and works. But when I think about it, it shouldnt work. Because Integer.toString() doesnt take an Integer as argument, only int. Where's the magic?

if you're using Java 5, the magic is in autoboxing. it's a new feature in that version. if you're using java 1.4 or earlier, then you're right, that shouldn't work.