我收到此错误消息：

线程“主”中的异常java.lang.RuntimeException：无法编译的源代码-

错误的符号类型：PetTest.main(PetTest.java:18)上的Pet.saySomething Java结果：1

这是我所拥有的：对于Speak课堂，

public class Speak {

public void saySomething();

}

这是我PetTest班上的东西：

import java.util.ArrayList;

public class PetTest {

public static void main(String[] args)

{

ArrayList myPets = new ArrayList();

myPets.add(new Parrot("Boss"));

myPets.add(new Cat("Oreo"));

myPets.add(new Dog("Riley"));

for (Pet p: myPets)

{

p.saySomething();

System.out.println(p);

}

}

}

我没有发布该程序附带的其他5个类。我知道Speak班上需要修正一些问题，但是我被困住了。在Speak类中，在public void

saySomething();说缺少方法正文或声明抽象的行上。

编辑：这是其他类：

public abstract class Pet {

String name;

public Pet(String name){

this.name = name;

}

}

public class Parrot extends Bird {

public Parrot (String name)

{

super(name);

}

@Override

public void saySomething()

{

System.out.println("Pauly want a craker?");

}

@Override

public String toString()

{

return "Hello, I'm " + name + " the parrot.";

}

}

public class Dog extends Pet {

public Dog (String name)

{

super(name);

}

@Override

public void saySomething()

{

System.out.println("Ruff, ruff!");

}

@Override

public String toString()

{

return "Hello, I'm " + name + " the dog.";

}

}

public class Cat extends Pet {

public Cat(String name)

{

super(name);

}

@Override

public void saySomething()

{

System.out.println("Meow.");

}

@Override

public String toString()

{

return "Hello, I'm " + name + " the cat.";

}

}

public class Bird extends Pet {

public Bird(String name)

{

super(name);

}

public void saySomething(){}

}