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【Java】简单的java代码统计程序(队列实现)
作者:要做攻城师的志 / 发布于2012/10/22/ 598
简单的java代码统计程序(队列实现)
<div>?</div>
<div>/**</div>
<div>* 列出一个文件夹包括子文件夹下面的java文件的总代码行数</div>
<div>*/</div>
import java.io.BufferedReader;</div>
import java.io.File;</div>
import java.io.FileReader;</div>
import java.io.IOException;</div>
import java.util.LinkedList;</div>
<div></div>
<div>public class Crawler2 {</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>private static LinkedList<File> task = new LinkedList<File>();</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>private static int count = 0;</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>public static void main(String[] args) {</div>
<div>  </div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>File dir = new File("E:\\OA\\src\\cn\\oa");</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>task.addLast(dir);</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>//执行任务</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>executeTask();</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>System.out.println("共有"+count+"行");</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>}
<div><span class="Apple-tab-span" style="white-space:pre">	</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>/**</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span> * 任务执行器，从队列中取出文件夹，统计其中java文件的代码的行数</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span> */</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>public static void executeTask()</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>{</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span> while(task.size()>0){</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span> //取出任务</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span> File dir = task.removeFirst();</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>for(File file:dir.listFiles())</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>{</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>if(file.isFile()&&file.getName().endsWith(".java"))</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>{</div>
<div><span class="Apple-tab-span" style="white-space:pre">				</span>count+=countFileLine(file);</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>}
<div><span class="Apple-tab-span" style="white-space:pre">			</span>else if(file.isDirectory())</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>{</div>
<div><span class="Apple-tab-span" style="white-space:pre">				</span>task.addLast(file);</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>}
<div><span class="Apple-tab-span" style="white-space:pre">		</span>}
<div><span class="Apple-tab-span" style="white-space:pre">	</span>}
<div><span class="Apple-tab-span" style="white-space:pre">		</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>}
<div><span class="Apple-tab-span" style="white-space:pre">	</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>/**</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span> * 统计某一个java文件有多少行</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span> * @param file</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span> * @return</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span> */</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>public static int countFileLine(File file)</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>{</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>  int count = 0;</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>  BufferedReader bufferedReader = null;</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>  try {</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>bufferedReader = new BufferedReader(new FileReader(file));</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>while(bufferedReader.readLine()!=null)</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>{</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>count++;</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>}
<div><span class="Apple-tab-span" style="white-space:pre">		</span></div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>} catch (Exception e) {</div>
<div></div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>e.printStackTrace();</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>}finally</div>
<div><span class="Apple-tab-span" style="white-space:pre">		</span>{</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>if(bufferedReader!=null)</div>
<div><span class="Apple-tab-span" style="white-space:pre">			</span>{</div>
<div><span class="Apple-tab-span" style="white-space:pre">				</span>try {</div>
<div><span class="Apple-tab-span" style="white-space:pre">					</span>bufferedReader.close();</div>
<div><span class="Apple-tab-span" style="white-space:pre">				</span>} catch (IOException e) {</div>
<div><span class="Apple-tab-span" style="white-space:pre">					</span>e.printStackTrace();</div>
<div><span class="Apple-tab-span" style="white-space:pre">				</span>}
<div><span class="Apple-tab-span" style="white-space:pre">			</span>}
<div><span class="Apple-tab-span" style="white-space:pre">		</span>}
<div><span class="Apple-tab-span" style="white-space:pre">	</span>  return count;</div>
<div><span class="Apple-tab-span" style="white-space:pre">	</span>}
<div>}
<div></div>
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