import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class ConvertString1 {
static int normalLines = 0;
static int commentLines = 0;
static int whiteLines = 0;
public static void main(String[] args) {
// 读取文件中的.java 文件
File f = new File(
"D:\\作业\\范例\\图书进存销系统\\book\\src\\org\\crazyit\\book\\ui");
File[] files = f.listFiles();
for (File file : files) {
// 正则表达式匹配
String s = file.toString();
Pattern p = Pattern.compile(".*\\.java$");
Matcher m = p.matcher(s);
while (m.find()) {
parse(s);
}
}
// 输出统计结果
System.out.println("normalLines=" + normalLines + "," + "commentLines="
+ commentLines + "," + "whiteLines=" + whiteLines);
}
private static void parse(String name) {
BufferedReader br = null;
String str = "";
boolean flag = false;
try {
br = new BufferedReader(new FileReader(name));
while ((str = br.readLine()) != null) {
str=str.trim();
// 判断是否为空行
if (str.matches("^[\\s&&[^\\n]]*$")) {
whiteLines++;
// 判断是否注释为/*……*/
} else if (str.startsWith("/*") && (!str.endsWith("*/"))) {
commentLines++;
flag = true;
}
// 判断是否注释行为"//"开头
else if (str.startsWith("//")) {
commentLines++;
}
else if (true==flag) {
commentLines++;
if (str.endsWith("*/")) {
flag=false;
}
}else {
// 普通代码行
normalLines++;
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (br != null) {
try {
br.close();
br = null;
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
} | 
转播
