第一个问题 public static void test1() {try { int c = 0; byte[] buf = new byte[6 * 1024]; while (c >= 0) {
c = System.in.read(buf);
if (c > 0) {
String str = new String(buf, 0, c);
System.out.println(str);
char[] chs = str.toCharArray();
for (int i = 0; i < chs.length; i++) {
...
