给出下面的类:public class Sample{ long length; public Sample(long x){ length = x; } public static void main(String arg[ ]){ Sample s1, s2, s3; s1 = new Sample(21L); s2 = new Sample(21L); s3 = s2; long m = 21L; } } 下面表达式中返回false的是( )。
选项:
A:s1 == s2;
B:s2 == s3 ;
C:m == s1;
D:s1.equals(m)
发布时间:2024-03-31 18:18:35