java - Why below program is printing Object of different Array? -

i not able understand internal working happening behind screen confused because printing different result in console expected to. resolve problem explanation?

public class demo {  public int [] sort(int h[]) {     int temp;     for(int i=0;i<h.length;i++)     {         (int j=i;j<h.length;j++)         {             if(h[i]>h[j])             {                 temp=h[i];                 h[i]=h[j];                 h[j]=temp;             }          }     }     return h; } public static void main(string args[]) {     demo obj =new demo();     int a[]={9,2,3,5,32,1,5,3,7};      int[] sorted=obj.sort(a);      /*code display array a*/     for(int s :a)     {         system.out.print(s+ "  ");     }       system.out.println("");       /*code display array sorted*/     for(int k:sorted)     {         system.out.print(k+"  ");     } }    /*    expected output                9  2  3  5  32  1  5  3  7                1  2  3  3  5   5  7  9  32       actual output                 1  2  3  3  5  5  7  9  32                  1  2  3  3  5  5  7  9  32    */    } 

the sort method working on actual input parameter passed method call-by-reference (i know not 100% correct in terms of wording - see here). is, changes array h in sortare visible in calling code well.

if don't want change input parameter, need make copy of object. in case use system.arraycopy so.