个回答

• 終結丶天涯

  2016-10-09 18:41:19

  已采纳

  public class Dog {	
  	int age =5;	
  	String name="乐乐";	
  	String color="白色";	
  	int weight =10;	
  	String sex="female";	
  	void eat()	{	}	
  	void look()	{	}	
  	void yao()	{	}	
  	void run()	{	}	
  	void swim()	{	}	
  	{
  		System.out.println("beef");	
  		System.out.println("person");	
  		System.out.println("旺旺~~~~~");	
  		System.out.println("quick");	
  		System.out.println("会");	
  	}	
      class dog1 extends Dog{public dog1(){	super();  } }    
      class dog2 extends Dog{public dog2(){   super();  } } 
      public static void main(String args[]){	
  		Dog dog=new Dog();	
  		System.out.println("姓名："+dog.name);	
  		System.out.println("年龄:"+dog.age);	
  		System.out.println("颜色:"+dog.color);	
  		System.out.println("体重:"+dog.weight);	
  		System.out.println("性别:"+dog.sex);	
  		dog.eat();	
  		dog.look();	
  		dog.yao();	
  		dog.run();	
  		dog.swim();
      }
  }

  
  

  1

• 慕粉1900176943

  2017-02-17 11:43:57

  public class Test {

  int age =5;

  String name="乐乐";

  String color="白色";

  int weight =10;

  String sex="female";

  void eat() {

  System.out.println("beef");

  }

  void look() {

  System.out.println("person");

  }

  void yao() {

  System.out.println("旺旺~~~~~");

  }

  void run() {

  System.out.println("quick");

  }

  void swim() {

  System.out.println("会");

  }

  public class dog1 extends Test {

  public dog1(){ super();  

  }

  }

  public class dog2 extends Test    {

  public dog2(){

  super();       

  }    

  } 

  public static void main (String args[]) {

  Test dog=new Test();

  System.out.println("姓名："+dog.name);

  System.out.println("年龄:"+dog.age);

  System.out.println("颜色:"+dog.color);

  System.out.println("体重:"+dog.weight);

  System.out.println("性别:"+dog.sex);

  dog.eat();  

  dog.look();  

  dog.yao();  

  dog.run();  

  dog.swim();

  }

  }

  
  

  0

• 終結丶天涯

  2016-10-09 18:34:50

  不要在同一个java文件里写好几个类，public class一个类中只能出现一次。还有你括号丢了很多啊。主类就是main方法所在的类。你最后丢了个括号，只剩下方法，当然没类了。

  1

• vellid

  2016-10-09 18:30:34

  同一个文件里，只能有一个类为public，另定义的另两个子类，不能加public。

  
  

  public class Dog {
      public static void main(String args[]) {
          Dog dog = new Dog();
          System.out.println("姓名：" + dog.name);
          System.out.println("年龄:" + dog.age);
          System.out.println("颜色:" + dog.color);
          System.out.println("体重:" + dog.weight);
          System.out.println("性别:" + dog.sex);
          dog.eat();
          dog.look();
          dog.yao();
          dog.run();
          dog.swim();
      }
  
      int age = 5;
      String name = "乐乐";
      String color = "白色";
      int weight = 10;
      String sex = "female";
  
      void eat() {
      }
  
      void look() {
      }
  
      void yao() {
      }
  
      void run() {
      }
  
      void swim() {
      }
  
      {
          System.out.println("beef");
          System.out.println("person");
          System.out.println("旺旺~~~~~");
          System.out.println("quick");
          System.out.println("会");
      }
  
      class dog1 extends Dog {
          public dog1() {
              super();
          }
  
          class dog2 extends Dog {
              public dog2() {
                  super();
              }
          }
      }
  }

  1

• 慕妹6786642

  2016-10-09 18:27:09

  dog2 继承还是用super（）啊，你怎么用的this

  0