关于代码中空白、注释等字符的统计（正则表达式的使用）

public class test {
static int normalLine = 0;
static int whiteLine = 0;
static int commentLine = 0;

public static void main(String[] args) {
File f = new File("E:\\java\\myworkspace\\game\\src");
File[] l = f.listFiles();
/*
* for (int i = 0; i < l.length; ++i) { if
* (l[i].getName().matches(".*\\.java$")) { parse(f); } }
*/
for (File child : l) {
System.out.println(child.getName());
if (child.getName().matches(".*\\.java$")) {
parse(child);
}
}
System.out.println("normalLine共有:" + normalLine);
System.out.println("whitelLine共有:" + whiteLine);
System.out.println("commentLine共有:" + commentLine);

}

private static void parse(File f) {
BufferedReader buf = null;
boolean isComment = false;
try {
buf = new BufferedReader(new FileReader(f));
String line = "";
while ((line = buf.readLine()) != null) {
line = line.trim();
if (line.matches("^[\\s&&[^\\n]]*$")) {
++whiteLine;
} else if (line.startsWith("/*") && line.endsWith("*/")) {
++commentLine;
} else if (line.startsWith("/*") && !line.endsWith("*/")) {
++commentLine;
isComment = true;
} else if (true == isComment) {
++commentLine;
if (line.endsWith("*/")) {
isComment = false;
}

} else if (line.startsWith("//")) {
++commentLine;
} else
++normalLine;
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

}