Java Basic(46)-Static

public class tuna {

private String first;

private String last;

private static int members = 0; →可以使用在所有的對象

public tuna(String fn,String ln){

first = fn;

last = ln;

members++;

System.out.printf("Constructor for %s %s,members in the club%d\n",first,last,members);

}

}

class apples{

public static void main(String[] args){

tuna member1 = new tuna("Megan","Fox");

tuna member2 = new tuna("Natalie","Portman");

tuna member3 = new tuna("Taylor","Swift");

}

}

這是運行時的結果：

Constructor for Megan Fox,members in the club: 1

Constructor for Natalie Portman,members in the club: 2

Constructor for Taylor Swift,members in the club: 3