You are cd$\text{'}$d into a directory with multiple Java $(.$java$)$ files. You want to compile all of these files. Which of the following commands would do the job? $q,$

javac $-{?}^{**}.$java

cat $*|)$

Is $*.$java $|$ xargs javac $-$g

echo $*.$java $|$ xargs javac $-$c

cat $*.$java $|$ xargs javac $-$g