Question

I was trying to find out how to determine which class a given object instantiate when it’s in Object[] array. For example:

Object[] array = new Object[]{175, "sss", new Table(), true};
Object obj = array[0]; // hmm... can this be used as an integer or maybe as a string?

Is it even possible?

Answer 1

You can call getClass() to find out the class of a particular object, or you can use instanceof to check a specific type:

if (array[0] instanceof Integer) {
}

Normally having to do a lot of this indicates a weakness in your design though – you should try to avoid needing to do this.