java 101-200之间的素数

public static void main(String[] args) {
List list =new ArrayList();
for (int i=101;i<200;i++) {
if(beS(i)){
list.add(i);
}
}
System.out.println(list);
}

private static Boolean beS(int i){
Boolean flag=true;
for (int j =2;j<=Math.sqrt(i);j++){
if (i%j==0&&j!=1){
flag = false;
}
}
return flag;
}