我正在尝试做一个简单的字符串操作.输入是"谋杀",我想得到"谋杀".
我试过这个
String str = "murder";
StringBuffer buf = new StringBuffer(str);
// buf is now "murder", so i append the reverse which is "redrum"
buf.append(buf.reverse());
System.out.println(buf);
但现在我得到"redrumredrum"而不是"murderredrum".
谁能解释我的程序有什么问题？谢谢.