题目内容

指出下列程序运行的结果public class Example{String str=new String("good");char[] ch = {'a','b','c'};public static void main(String args[]){Example ex=new Example();ex.change(ex.str,ex.ch);System.out.print(ex.str+" and ");Sytem.out.print(ex.ch);}public void change(String str,char ch[]){str="test ok";ch[0]='g';}}

A. good and abc
B. good and gbc
C. test ok and abc
D. test ok and gbc

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