🚀 go-pugleaf

Your code is just about alright, I suggest the following:

public void func1(){
     int i = 10;
    System.out.println(func2(i))  //===> 11
 }
 public int func2(int arg){
     arg = arg + 1;
 }

You don't have to convert i to an Object, because PrintStream (System.out in
this case) has println(int) method. But if you want to convert int to an
object anyway - you would use Integer class:

Integer objI = new Integer(i);

The reverse convertion looks:

int i = objI.intValue();

There is a "wrapper" object for every primitive type: Byte for byte, Short
for short, Boolean for boolean, etc.

Regards,
Stefan


"wallance" <wallance@sh.ctil.com> wrote in message news:3b3b1371_2@dnews...
> hi,
> i want to change a int type argument in java,what should i do?
> for example:
>
> public func1(){
>
> int i = 10;
> func2(i);
> System.out.println(i)  ===> 11
>
> }
> public func2(int arg){
>     arg = arg + 1;
> }
>
> i know in java your can trans a object .then it can modify by reference.
> but this is int type,not object.what should i do?
>
>