Write a program in java langauge to calculate the total size $($in bytes, no

text

or commas, just the integer answer$)$ of all files in the current directory $/$

folder and all sub$-$folders. Your code must include a recursive function

written and called by the student. Follow the pseudo code exactly.

PSEUDOCODE

int main

long total $=0$

print dirspace$("")$

dirspace$($targetDir$)$

long sum $=0$;

for every entry in targetDir

if entry is a file

sum $+=$ size of entry

if entry is a dir and $!("."$ or $"..")$;

sum $+=$ dirspace$($entry$)$

return sum