public?static?void?main(String[]?args)?{
for?(int?i?=?1;?i?<=?100;?i++)?{
if?(isZhishu(i))?{
System.out.println(i);
}
}
}
private?static?boolean?isZhishu(int?num)?{
if?(num?==?1)?{
return?false;
}
int?sqrt?=?(int)?Math.sqrt(num)?+?1;
for?(int?i?=?2;?i?<?sqrt;?i++)?{
if?(num?%?i?==?0)?{
return?false;
}
}
return?true;
}
}