import java.io.BufferedReader; 
import java.io.File; 
import java.io.FileNotFoundException; 
import java.io.FileReader; 
import java.io.IOException; 

public class CodeCounter { 

static long normalLines = 0; 
static long commentLines = 0; 
static long whiteLines = 0; 

public static void main(String[] args) { 
File f = new File("D:\\share\\JavaProjects\\TankWar1.9.11\\src"); 
File[] codeFiles = f.listFiles(); 
for(File child : codeFiles){ 
if(child.getName().matches(".*\\.java$")) { 
parse(child); 
} 
} 

System.out.println("normalLines:" + normalLines); 
System.out.println("commentLines:" + commentLines); 
System.out.println("whiteLines:" + 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 (line.startsWith("/*") && line.endsWith("*/")) { 
commentLines ++; 
} else if (true == comment) { 
commentLines ++; 
if(line.endsWith("*/")) { 
comment = false; 
} 
} else if (line.startsWith("//")) { 
commentLines ++; 
} else { 
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(); 
} 
} 
} 
} 

}