java文件引用规则 同目录的不用引用 包中的需要引用

import com.Employee;

public class Hello {
    public static void main(String[] args) {
        Person p = new Person("John Doe11");
        Employee e = new Employee("John Doe");
        System.out.println("Hello, " + e.getName() + "!");
        System.out.println("Hello, world!");
        System.out.println("Hello, " + p.getName() + "!");
    }
}

public class Person {
    private String name;

    public Person(String name) {
        this.name = name;
    }

    public String getName() { return name; }
}