静态变量跟实例变量

静态变量和实例变量
public class bishi {private static int bi;private int he;public static void main(String[] args) {bishi b = new bishi();bishi c = new bishi();bi = 6;bishi.bi = 7;b.bi = 8;c.bi = 9;b.he = 21;c.he = 90;System.out.println(bi);System.out.println(b.he);System.out.println(c.he);}}?

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