java为什么即使我声明了rand,它也会给我一个错误?
import java.util.Random;
class perro{
private Float animo;
private Float umbral;
Random rand = new Random();
public perro(){
animo = rand.nextFloat() * (5+5)-5;
umbral = rand.nextFloat() * (0-20);
}
public Float getAnimo(){
return animo;
}
public Float getUmbral(){
return umbral;
}
private void psican(persona p){
this.animo = (rand.nextFloat() -0.5) * 10 + this.animo;
if (p.tieneGalleta()){
p.darGalleta();
this.animo += (1.0 / p.getConfiabilidad()) * (rand.nextInt(2));
}
System.out.println("Mi nuevo animo es: " + this.animo);
}
我收到了这个错误:
"error: incompatible types: double cannot be converted to Float
this.animo = (rand.nextFloat() -0.5) * 10 + this.animo;"
我已经检查了所有的东西,但是,从一开始,所有的东西都是浮点数
# 1 楼答案
因为
0.5
是double
(不是float
)。改变这个到
或