Class 方法类和对象

我不知道我的错误是我不理解课程

我读过一本java的书，但没有帮助 类、代码和方法让我感到困惑，尽管你能理解我的代码，但我会更好地理解这些东西的实际用途

public double intoxicated(double weight)
     {
         double numDrinks;

         numDrinks = (0.08 + 0.015) * weight / 
                  (12 * 7.5 * alcohol);
         return numDrinks;
     }


public class Beer
{
   private String name; 
   private double alcohol; 

   public String getName(){
       return name;
   }

   public void setName(String n)
   {
       this.name= name;

   }

   public double getAlcohol()
   {
       return Alcohol;

   }

   public void setAlcohol(double a)
   {
      this.age = age;

   }

   public double intoxicated(double weight)
    {
    double numDrinks;

    numDrinks = (0.08 + 0.015) * weight /
            (12 * 7.5 * alcohol);
    return numDrinks;
    }

   public static void main(String[] args)
   {
       Beer beer1 = new Beer();
       Beer beer2 = new Beer();


       beer1.setName("Cors Light");
       beer1.setAlcohol(0.042); 
       beer2.setName("Heinaken");
       beer2.setAlcohol(0.042); 

       double lightWeight = 100.0;
       double heavyWeight = 250.0; 

       double lightDrinks1 = beer1.intoxicated(lightWeight);
       System.out.println("The number of " + beer1.getName() +
               " drinks needed to make\na person weighing " +
               lightWeight + " pounds intoxicated is " + lightDrinks1);
       System.out.println();



   double heavyDrinks1 = beer1.intoxicated(heavyWeight);
   System.out.println("The number of " + beer1.getName() +
           " drinks needed to make\na person weighing " +
           heavyWeight + " pounds intoxicated is " + heavyDrinks1);
   System.out.println();


      double lightDrinks2 = beer2.intoxicated(lightWeight);
      System.out.println("The number of " + beer2.getName() +
               " drinks needed to make\na person weighing " +
               lightWeight + " pounds intoxicated is " + lightDrinks2);
       System.out.println();


       double heavyDrinks2 = beer2.intoxicated(heavyWeight);
       System.out.println("The number of " + beer2.getName() +
               " drinks needed to make\na person weighing " +
               heavyWeight + " pounds intoxicated is " + heavyDrinks2);
       System.out.println();


       Beer beer3 = new Beer();
       beer3.setName("Miller Genuine Draft Light");
       beer3.setAlcohol(0.042); // 4.2% alcohol

       lightWeight = 100.0; 
       heavyWeight = 250.0; 

       double lightDrinks3 = beer3.intoxicated(lightWeight);
       System.out.println("The number of " + beer3.getName() +
               " drinks needed to make\na person weighing " +
               lightWeight + " pounds intoxicated is " + lightDrinks3);
       System.out.println();

       double heavyDrinks3 = beer3.intoxicated(heavyWeight);
       System.out.println("The number of " + beer3.getName() +
               " drinks needed to make\na person weighing " +
               heavyWeight + " pounds intoxicated is " + heavyDrinks3);
       System.out.println();
   }
}

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1.你没有提到什么错误。2.您在类之外声明了一个方法。3.好luckcan你能直观地告诉我如何改变这种感恩方式吗？将方法

陶醉

转化为课堂啤酒。另外，您仍然没有发布错误，这使得很难帮助您…酒精。java:6:error:public double-tousined（双倍重量）；^酒精。java:11:错误：应为numDrinks=（0.08+0.015）*weight/^酒精。java:13:错误：返回numDrinks类型的非法开始；^酒精。java:13:错误：预期返回numDrinks；^Alcohol.java:116:错误：类、接口或枚举应为}^5错误这些是错误