Menu
I was reading More Joel on Software when I came across Joel Spolsky saying something about a particular type of programmer knowing the difference between an int and an Integer in Java/C# (Object-Oriented Programming Languages).
So, what is the difference?
802
A int is a data type that stores 32 bit signed two's compliment integer. On other hand Integer is a wrapper class which wraps a primitive type int into an object. int helps in storing integer value into memory. Integer helps in converting int into object and to convert an object into int as per requirement.
Nothing. They are one and the same. The end result is same — we have two integer variables named a and b and they both are uninitialized. What is the difference between * (int *) and (int *) in C (pointers and development)?
In both languages (Java and C#) int is 4-byte signed integer.
An integer in Java is a memory location that can hold an integer, a positive or negative non-decimal number. It is denoted by the keyword, 'int'.
In Java, the 'int' type is a primitive, whereas the 'Integer' type is an object.
In C#, the 'int' type is the same as System.Int32 and is a value type (ie more like the java 'int'). An integer (just like any other value types) can be boxed ("wrapped") into an object.
The differences between objects and primitives are somewhat beyond the scope of this question, but to summarize:
Objects provide facilities for polymorphism, are passed by reference (or more accurately have references passed by value), and are allocated from the heap. Conversely, primitives are immutable types that are passed by value and are often allocated from the stack.
132
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
