JAVA基础题编译失败，求解~

Question

编译时末三行输出语句提示找不到符号，懵了

```java
public class HomeWork07{
    public void main(String[] args){
        Dog dog1 = new Dog();
        Dog dog2 = new Dog();
        System.out.println("dog1 info:");
        dog1.show();
        System.out.println("dog2 info:");
        dog2.show();

    }
}
class Dog{
    public Dog(){
        String name = "gougou";
        String color = "yellow";
        int age = 2;

    }
    public void show(){
        System.out.println("name = " + this.name);
        System.out.println("color = " + this.color);
        System.out.println("age = " + this.age);

    }
}

```

Answer 1

class Dog{
    private String name;
    private String color;
    private int age;
    public Dog(){
        name = "gougou";
        color = "yellow";
        age = 2;
 
    }
    public void show(){
        System.out.println("name = " + this.name);
        System.out.println("color = " + this.color);
        System.out.println("age = " + this.age);
    }
}