java - Declaring and initializing ints, error when calling constructor -

when try create new int object:

int g= new int();

netbeans tells me:

incompatible types required: int found: int[] '[' expected illegal start of expresion.

i want create new int.

for primitive datatypes dont have constructor:

int g = 5;

int g; //declaration

but keep in mind, there classes contain more functionallity every primitive datatype. datatypes name written first letter upper case:

integer g = new integer(5); //but needs parameter

where example have function create integer out of string:

integer.parseint("5");

but there not need them declaration part.

Error