看见一道笔试题：
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 ");
System.
out.print(ex.ch);
}
public void change(String str,
char ch[]) {
str =
"test ok";
ch[
0] =
'g';
}
}
