Q$5(10$ marks$)$: Suppose that $51$ and $52$ are given as follows:

StringBuilder s$1=$ new StringBuilder$("$Java$")$;

stringBuilder s$2=$ new StringBuilder$("$HTML$")$;

Show the value of $51$ after each of the following statements.

Show the value of char $c$ in part e and String $s3$ in part $j.$

The statements are independent. Each part should use the original value of $s1.$

a$.$ s$1\_$append$("$ is fun"$)$;

b$.51.$append $(52)$;

c$.$ s$1.$insert $(2,"$is fun"$)$;

d$.$ s$1.$insert $(1,$ s$2)$;

e$.$ char $c=$ s$1.$ rharAt $(2)$;

f$.$ s$1.$deleterharat $(3)$;

g$.$ s$1.$delete $(0,2)$;

h$.$ s$1.$reverse$()$;

i$.$ s$1.$replare $,$ "Computer"$)$;

j$.$ String $53=51.$ substring $(1,3)$;