testperson.java

JAVA培训用实用代码

class Person {
	private int id;
	private static int total = 0;
	public static int getTotalPerson() { 
		return total;
	}
	public Person() {
		total++;
		id = total;
	}
}

public class TestPerson {
	public static void main(String[] args) {
		System.out.println(Person.getTotalPerson());
		Person p1 = new Person();
		System.out.println(Person.getTotalPerson());
	}
}