Title: Array object reference and memory structure analysis Given the

following code snippet:

java

Point$[]$ arr $=$ new Point$[4]$;

arr$[0]=$ new Point$(30,40)$;

arr$[1]=$ new Point$(50,60)$;

arr$[2]=$ new Point$(70,80)$;

$\backslash$operatorname $\{$ a r r $[3]=$ ~ n u l l ; $\}$

Point$[]$ arr$2=$ arr;

arr$2[1].$setX$(10)$;

arr$2=$ new Point$[3]$;

arr$2[0]=$ arr$[2]$;

arr$2[1]=$ new Point$()$;

arr$2[1].$setY$(-10$e$)$;

arr$[0].$setX$($arr$[0].$getX$()+5)$;

Questions:

Draw a diagram of the memory structure after arr $2=$arr; and explain the relationship

between arr$2$ and arr.

What happens to the content of arr$[1]$ after executing arr$2[1].$setx$(10)?$ Why?

What is the relationship between arr$2$ and arr after executing arr$2=$new Point$[3]?$ Draw

a new diagram of the memory structure.

What are the contents of the arrays pointed to by arr and arr$2$ respectively after the code

is executed? Please describe and explain the changes in memory in detail. Part $2$: