已知如下代码.String s1=”ab”;String s2=”cd”;String ss1=”abcd”;String ss2=”ab”+”cd”;String ss3=s1+”cd”;String ss4=”ab”+s2;String ss5=s1+s2;请问如下哪个表达式为true?( )
A、ss2 = = ss3;
B、ss3 = = ss4;
C、ss4 = = ss5;
D、ss4.equals(ss5)
发布时间:2024-12-28 07:24:59