java - 尝试实现一个类

Question

我试图获得有关运行我的汽车编译器的帮助，我改变了一些东西，但有 1 个错误

public class AutomobileDescription
{ 
    /**
    Constructor to display the make, model and price the new automobile I wish to purchase
   */

    public AutomobileDescription(String carMake, String carModel, carPrice) 
    {
        make = m; 
        model = mo;
        price = p; 
    } 
     public String m =("Toyota");
     public String mo =("Camry");
     public String p =("22055");

     public String getAutomobileinfo()
     {  
     return m + mo +  p;
     Automobile myAutomobile = new Automobile(Toyota, Camry, 22055);
     System.out.println("The Make, Model and Price of the car is: m + mo + p "); 

    }
}

----jGRASP 执行:javac -g AutomobileDescription.java

AutomobileDescription.java:7:错误:预期 公共(public)汽车描述(字符串 carMake，字符串 carModel，carPrice) ^1 个错误

----jGRASP wedge2:进程的退出代码为 1。 ----jGRASP:操作完成。

Answer 1

您在这里遇到多个问题:

public class AutomobileDescription
{ 
    /**
    Constructor to display the make, model and price the new automobile I wish to purchase
   */

public AutomobileDescription(String carMake, String carModel, /*no return type*/ carPrice) 
{
    make = m; 
    model = mo;
    price = p; 
} 
 public String m =("Toyota");
 public String mo =("Camry");
 public String p =("22055");

    public String getAutomobileinfo()
    {  
     return m + mo +  p; /*return? then why statements after this?*/
     Automobile myAutomobile = new Automobile(Toyota, Camry, 22055);
     System.out.println("The Make, Model and Price of the car is: m + mo + p "); 

    }
}

解决方案:

public class AutomobileDescription{ 
/**
Constructor to display the make, model and price the new automobile I wish to purchase
*/

public AutomobileDescription(String carMake, String carModel, String carPrice) 
{
    m = make;
    mo = model;
    p = carPrice;
} 
 private String m;
 private String mo;
 private String p;

 public String getAutomobileinfo()
 {  
    return m + mo +  p;
 }
 public static void main(String[] args){
    AutomobileDescription myAutomobile = new AutomobileDescription("Toyota", "Camry", "22055");
    System.out.println("The Make, Model and Price of the car is: " + myAutomobile.getAutomobileinfo()); 
 }
}