多项选择题
Which statements about inheritance are true？（）
A. In Java programming language only allows single inheritance.
B. In Java programming language allows a class to implement only one interface.
C. In Java programming language a class cannot extend a class and implement a interface together.
D. In Java programming language single inheritance makes code more reliable.
相关考题
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多项选择题
Whicharesyntacticallyvalidstatementat//pointx？（） classPerson{ privateinta； publicintchange（intm）{ returnm； } } publicclassTeacherextendsPerson{ publicintb； publicstaticvoidmain（Stringarg[]）{ Personp=newPerson（）； Teachert=newTeacher（）； inti； //pointx } }
A. i = m；
B. i = b；
C. i = p.a；
D. i = p.change（30）；
E. i = t.b. -
多项选择题
Whichofthefollowingfragmentsmightcauseerrors？（）
A. String s = "Gone with the wind"；String t = " good "；String k = s + t；
B. String s = "Gone with the wind"；String t；t = s[3] + "one"；
C. String s = "Gone with the wind"；String standard = s.toUpperCase（）；
D. String s = "home directory"；String t = s - "directory"； -
单项选择题
Whichstatementofassigningalongtypevariabletoahexadecimalvalueiscorrect？（）
A. long number = 345L；
B. long number = 0345；
C. long number = 0345L；
D. long number = 0x345L；
