为什么double price=120.5f;过不了，而double price=120.5;过了

public class HelloWorld{

    public static void main(String[] args) {

String name="爱慕课";

char sex='男';

int num=18;

double price=120.5;

boolean isOK=true;

System.out.println(""+name);

System.out.println(""+sex);

System.out.println(""+num);

System.out.println(""+price);

System.out.println(""+isOK);

}

}