java认证考试编程题（14）
来源 :中华考试网 2016-10-05
中public class Test
{
static void oper(StringBuffer c,StringBuffer d)
{
d = c.append("B");
}
public static void main(String[] args)
{
StringBuffer a = new StringBuffer("A");
StringBuffer b = new StringBuffer("B");
oper(a, b);
System.out.println(a + "," + b);
}
}
此程序会输出:AB,B