function unjar {
	jar_name=${1}
	dir_name=${jar_name}_dir
	mkdir -p ${dir_name}
	pushd ${dir_name}
	jar xf ../${jar_name}
	popd
}

function unjarshadowed {
	unjar $1
	pushd ${1}_dir
	for j in $(find $(pwd) -type f|egrep 'jar$')
	do
		parent=$(dirname $j)
		jar_name=$(basename $j)
		pushd $parent
		unjar $jar_name
		rm -f $jar_name
		popd
	done
	popd
}