这儿用float没问题吧？
public class HelloWorld{
public static void main(String[] args) {
String name="爱慕课";
char sex='男';
int num=18;
float 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);
}
}
