下列程序的输出结果是（ ） class StringDemo{ public static void main(String[] args){ String s1 = “a”; String s2 = “b”; show(s1,s2); System.out.println(s1+s2); } public static void show(String s1,String s2){ s1 = s1 +“q”; s2 = s2 + s1; } }
A: a
B: aq
C: aqbaq
D: aqaq
A: a
B: aq
C: aqbaq
D: aqaq
举一反三
- 以下程序的输出结果是 String s1="1",s2="2"; String s=s1+s2; System.out.println(s);
- 【单选题】下列选项中,( )是程序正确的输出结果。[br][/br]class StringDemo{[br][/br] public static void main(String[] args){ [br][/br] String s1 = "a"; [br][/br] String s2 = "b"; [br][/br] show(s1,s2); [br][/br] System.out.println(s1+s2); [br][/br] } [br][/br] public static void show(String s1,String s2){[br][/br] s1 = s1 +"q"; [br][/br] s2 = s2 + s1; [br][/br] } [br][/br]} A: a B: aq C: aqbaq D: aqaq
- 下面哪个结果是正确的？（） public class Testjava{ public static void main(String[] args){ String s= "abcd"; String s1,s2; s1 =s.concat("e"); s2 = s1.replace('c','e'); System.out.println(s2); } } A: Abcde B: Abced C: Abede D: Abc
- public static void main(String[] args) { String s1="123"; String s2 = "123"; System.out.println(s1==s2); } 输出的结果是________
- public class Test { public static void main(String[] args) { String s1 = "abc"; String s2 = new String ("abc"); System.out.println(s1 == s2); } } 程序运行结果是