參數ab及c從命令行做參數輸入java？

private static X fx (int a,int b,int c) throws Exception{

X x = new X();

double m = b*b - 4*a*c;

if(m>=0){

x.x1=(-1*b+Math.sqrt(m))/(2*a);

x.x2=(-1*b-Math.sqrt(m))/(2*a);

return x;

}

else throw new Exception("無解");

}