I have 2 variable like below
char s='s';
char Kaazoooombaa ='s';
how can I know which variable is consuming how much space ?
I have 2 variable like below char s=’s’; char Kaazoooombaa =’s’; how can I
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I have 2 variable like below
char s='s';
char Kaazoooombaa ='s';
how can I know which variable is consuming how much space ?
Other than a small amount of space for the metadata (which will be allocated once in total, not once per instance) the name makes no difference1. So in the example given, each of those variables will take 2 bytes, possibly padded to 4 bytes depending on the other fields and the VM being used.
Note that even for reference types (including arrays) the space taken by the variable itself is fixed by its type (and the details of the VM) – the space taken by a reference to an empty string is the same as the space taken by a reference to a huge string.
1 There may be a cost per use of the variable – or perhaps per class using the variable. You’d have to consult the VM specification to check the exact binary representation. Even then that’s the representation in the class file, which may well not lead to increased memory use by the time it’s all JIT compiled etc. It’s almost certain to be irrelevant in the grander scheme of things anyway – the memory required by actual objects almost always dwarfs the memory required by the code itself.