java编程,输入一段英文字母,将每个单词的首字母转换为大写字母.

在你的基础上修改得
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
public class TTTest {
public static void main(String args[]) {
try {
BufferedReader in = new BufferedReader(new InputStreamReader(
System.in));
String s = in.readLine();
StringBuffer s1 = new StringBuffer();
StringTokenizer st = new StringTokenizer(s);

while (st.hasMoreTokens()) {
String str = st.nextToken();

char c = (str).charAt(0);
if (c >= 'a' && c