计算JAVA源代码（src）行数，不计算空行

import java.io.BufferedReader;  import java.io.File;  import java.io.FileReader;  import java.util.ArrayList;  import java.util.List;      /**   * **********************************************   * @description 计算源代码（src）行数，不计算空行   *     宗旨：将src下所有文件组装成list,再筛选出文件，对文件进行遍历读取   ***********************************************   */  public class LineCounter {      List<File> list = new ArrayList<File>();      int linenumber = 0;              FileReader fr = null;      BufferedReader br = null;          public void counter(String projectName) {  //        String path = System.getProperty("user.dir");          String path = LineCounter.class.getResource("/").getPath();  // 同下个path          path = path.substring(0, path.length() - 24) + projectName + "/src/main/java";          System.out.println(path);          File file = new File(path);          File files[] = null;          files = file.listFiles();          addFile(files);          isDirectory(files);          readLinePerFile();          System.out.println("Totle:" + linenumber + "行");      }          // 判断是否是目录      public void isDirectory(File[] files) {          for (File s : files) {              if (s.isDirectory()) {                  File file[] = s.listFiles();                  addFile(file);                  isDirectory(file);                  continue;              }          }      }          //将src下所有文件组织成list      public void addFile(File file[]) {          for (int index = 0; index < file.length; index++) {              list.add(file[index]);              // System.out.println(list.size());          }      }              //读取非空白行      public void readLinePerFile() {          try {              for (File s : list) {                  int yuan = linenumber;                  if (s.isDirectory()) {                      continue;                  }                  fr = new FileReader(s);                  br = new BufferedReader(fr);                  String i = "";                  while ((i = br.readLine()) != null) {                      if (isBlankLine(i))                          linenumber++;                  }                  System.out.print(s.getName());                  System.out.println("\t\t有" + (linenumber - yuan) + "行");              }          } catch (Exception e) {              e.printStackTrace();          } finally {              if (br != null) {                  try {                      br.close();                  } catch (Exception e) {                  }              }              if (fr != null) {                  try {                      fr.close();                  } catch (Exception e) {                  }              }          }      }          //是否是空行      public boolean isBlankLine(String i) {          if (i.trim().length() == 0) {              return false;          } else {              return true;          }      }              public static void main(String args[]) {          LineCounter lc = new LineCounter();          String projectName = "/maps1.2";     //这里传入你的项目名称          lc.counter(projectName);      }  }