Java类和对象的问题

public class People{
private String name;
public void setName(String name){
this.name = name;
}
public void eat(){
System.out.println(name + "我是吃饭方法");
}
}
//使用
private People people1;
people1 = new People();
people.setName("张三");
people.eat();//调用了吃饭方法 打印的结果是 张三吃饭

public class person{
    private String name;//有名字
    private String sex;//有性别
    ...............................
    //会吃饭
    public void eat(){
       System.out.println("老子要吃饭咯");
    }
    Person person = new Person();
    //开始吃饭
    person.eat();
}