public class Foo {
02
03 public static void main(String[] args) {
04
05 StringBuffer a=new StringBuffer("A");
06
07 StringBuffer b=new StringBuffer("B");
08
09 operator(a,b);
10
11 System.out.println(a+","+b);
12
13 }
14
15 public static void operator(StringBuffer x,StringBuffer y){
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17 x.append(y);
18
19 y=x;
20
21 }
22
23 }