class Person {
	//姓名
	String name;
	//年龄
	int age;
	//国籍
	String country;
	
	public Person(){}
	
	public Person(String name,int age) {
		this.name = name;
		this.age = age;
	}
	
	public Person(String name,int age,String country) {
		this.name = name;
		this.age = age;
		this.country = country;
	}
	
	public void show() {
		System.out.println("姓名："+name+",年龄："+age+",国籍："+country);
	}
}

class PersonDemo {
	public static void main(String[] args) {
		//创建对象1
		Person p1 = new Person("邓丽君",16,"中国");
		p1.show();
		
		//创建对象2
		Person p2 = new Person("杨幂",22,"中国");
		p2.show();
		
		//创建对象3
		Person p3 = new Person("凤姐",20,"中国");
		p3.show();

	}
}

class Person {
	//姓名
	String name;
	//年龄
	int age;
	//国籍 static修饰
	static String country;
	
	public Person(){}
	
	public Person(String name,int age) {
		this.name = name;
		this.age = age;
	}
	
	public Person(String name,int age,String country) {
		this.name = name;
		this.age = age;
		this.country = country;
	}
	
	public void show() {
		System.out.println("姓名："+name+",年龄："+age+",国籍："+country);
	}
}

class PersonDemo {
	public static void main(String[] args) {
		//创建对象1
		Person p1 = new Person("邓丽君",16,"中国");
		p1.show();

		Person p2 = new Person("杨幂",22);
		p2.show();

		Person p3 = new Person("凤姐",20);
		p3.show();
	}
}

class Outer {
	private int num = 10;
	private static int num2 = 100;	
	//内部类用静态修饰是因为内部类可以看出是外部类的成员
	public static class Inner {
		static int num3 = 1000;
		public void show() {
			System.out.println(num2);
		}

		public static void show2() {
			System.out.println(num2);
		}		
	}
}

class DemoTest {
	public static void mai
		Outer.Inner oi = new Outer.Inner();
		oi.show();
		//show2()的调用
		Outer.Inner.show2();
		//访问num3		
		System.out.println(Outer.Inner.num3);
	}
}