读程序,以下哪个表达式返回值为true? public class Sample{ long length; public Sample(long l){ length = l; } public static void main(String arg[]){ Sample s1, s2, s3; s1 = new Sample(21L); s2 = new Sample(21L); s3 = s2; long m = 21L; } }
【简答题】阅读理解。 Starting a stamp collection is easy and not very expensive. Before you start, you need to decide what kind of stamps you want to collect. Most people collect stamps that they are interested in: ...