java万能转移编码

String str = "系统异常，异常编号ï¼";
char [] chars =str.toCharArray();//获取原始编码
byte [] bytes = new byte[chars.length];
for (int i = 0; i < bytes.length; i++) {
bytes[i] = (byte)chars[i];
System.out.println(bytes[i]);
}
System.out.println(new String(bytes));//转换默认编码（编译器当前的编码）