import java.io.*; 

public class CodeCounter
{
static long normaiLines = 0;//实际代码行数
static long commentLines = 0;//注释行数
static long whiteLines = 0;//空白行数
public static void main(String[] args)
{
File f = new File("E:\\share\\java");
File[] codeFiles = f.listFiles();
for(File child : codeFiles )
{
if (child.getName().matches(".*\\.java$"))
{
parse(child);
}
}
System.out.println("normalLines实际代码行数:" + normaiLines);
System.out.println("commentLines注释行数:" + commentLines);
System.out.println("whiteLines空白行数:" + whiteLines);
}
private static void parse(File f)
{
BufferedReader br = null;
boolean comment = false;
try
{
br =new BufferedReader(new FileReader(f));
String line = "";
while ((line = br.readLine()) != null)
{
line = line.trim();
if(line.matches("^[\\s&&[^\\n]]*$"))
{
whiteLines ++;
}else if (line.startsWith("/*") && !line.endsWith("*/"))
{
commentLines ++;
comment = true;
}else if (true == comment)
{
commentLines ++;
if (line.endsWith("*/"))
{
comment = false;
}
}else
{
normaiLines ++;
}
}
}catch (FileNotFoundException e)
{
e.printStackTrace();
}catch (IOException e)
{
e.printStackTrace();
}finally
{
if (br != null)
{
try
{
br.close();
br = null;
}catch (IOException e)
{
e.printStackTrace();
}
}
}
}
}