java代碼統計工具

 

當初初學java是為了統計自己的程式碼數寫的java程式碼數統計工具，功能很簡單，給出一個檔案路徑，統計出代碼的總行數，注釋行數，空行行數等等。

實現方面：遍曆所有的java檔案時用到了典型的遞迴：判斷給是檔案是目錄還是檔案，如果是目錄，就遍曆檔案所有的子檔案，對所有子檔案遞迴調用該方法，如果是java檔案，直接統計行數，統計行數用到了Regex。核心的代碼如下：

遍曆所有java檔案：

 

public void getFileName(String filePath)

       {

              File f = new File(filePath);

              if(!f.isDirectory())//不是目錄

              {

                     if(f.getName().endsWith(".java"))

                     {

                            count(f);

                     }

              }

              else//是目錄

              {

                     String []fileList = f.list();

                     for(int i=0;i<fileList.length;i++)

                     {

                            File file = new File(filePath+"//"+fileList[i]);

                            if(!file.isDirectory())//不是目錄

                            {

                                   if(file.getName().endsWith(".java"))

                                   {

                                          count(file);

                                   }

                            }

                            else         //是目錄

                            {

                                   getFileName(file.getPath());//注意：不是getname()!

                            }

                     }

              }

             

       }

統計程式碼數：

                     while((line = br.readLine())!=null)

                     {

                            line = line.trim();

                            if(line.matches("^[[//s]&&[^//n]]*$"))  // spaceLine   ?*$

                            {

                                   spaceLine++;

                            }

                            else if(line.startsWith("//")||(line.startsWith("/*")&&line.endsWith("*/")))

                            {

                                   commentLine++;

                            }

                            else if(line.startsWith("/*")&&!line.endsWith("*/"))

                            {

                                   commentLine++;

                                   comment = true;

                            }

                            else if((line.endsWith("*/"))&&comment==true)

                            {

                                   commentLine++;

                                   comment = false;

                            }

                            else if(comment==true)

                            {

                                   commentLine++;

                            }

                            else

                            {

                                   normalLine++;

                            }

                     }

完整的代碼和可啟動並執行jar在http://download.csdn.net/user/china8848可以獲得。