🚀 go-pugleaf

In article <984126262.29787.0.nnrp-09.3e31fcf2@news.demon.co.uk>, Wayne
Gibson <wayne.gibson@rendersoft.com> writes
>Hi,
>Was wondering if somebody could help.  I converting some routinues over from
>C/C++ to Java,  I know that Java doesn't support pointers. So is there a way
>of passing a variable by address/reference to a function ?

 This is a tricky question and should be in the FAQ.


 In Java,  all variables are (?32 bit) words. Either they exist
 as the actual values of primitive numeric types such as int.
 Or they exist as some sort of "reference" to the location
 where a class object or array object is kept.  
 Hence do not worry about code which looks like....

 doSomething(){
    int   myArray[] = new int[8];
    AnObj myObj     = new AnObj();
    doMore(myArray, myObj);

 This will send references to those same original array
 and class objects allocated in the calling routine
 [not entire copies of everything stored in them].


 I'm not sure how to change primitive numeric values
 in the calling routine.  Try putting them in a class
 object:

 class  FilletVars{
    int left=0;
    int right=0;
    int sideways=0;
    FilletVars(){  left=0; right=0; sideways=0; };
 };
 void fillet(){    
    FilletVars   myBlock = new FilletVars();
    shoveit(myBlock);
    ..........
 };
 void shoveit(FilletVars oldBlock){
    oldBlock.left = 12;
    ...........
 };






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