Discuss / Java / 打卡

打卡

Topic source
public class Main {

	public static void main(String[] args) {
		// TODO: 给Person类增加一个静态字段count和静态方法getCount,统计实例的个数
		Person p1 = new Person("小明");
		//System.out.println(Person.getCount()); // 1
		Person p2 = new Person("小红");
		System.out.println(Person.getCount()); // 2
		Person p3 = new Person("小军");
		System.out.println(Person.getCount()); // 3
		Person p4 = new Person("小军军");
		System.out.println(Person.getCount()); // 4
		System.out.println(Person.getCount());
		System.out.println(Person.getCount());
	}

}


public class Person {

	// TODO

	String name;
	public static int count = 0;

	public Person(String name) {
		this.name = name;
		count++;
	}
	
	public static int getCount() {
		return count;
	}

}


  • 1

Reply