FileFilter , FileNameFilter interface

 

 

1, 해당 interface를 구현하고, accept를 override하면 File 객체의 listFiles 메소드를 호출할 때 Filter로 사용가능.
2, 경로 지정시, separator 사용하는 부분은 기억.
String pathName = "C:"+ File.separator+"Users"+File.separator +"Lee" + File.separator + "test";

 

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package com.test.testapplication.file;   import java.io.File;   public class FileFilterSample {       public FileFilterSample() {         super();         String pathName = "C:"+ File.separator+"Users"+File.separator +"Lee" + File.separator + "test";         //System.out.println(pathName);         this.sampleTest(pathName);     }           public void sampleTest(String pathName) {         File file;                   try {             file = new File(pathName);             //File [] mainFileList = file.listFiles();             //File [] mainFileList = file.listFiles( new PNGFileNameFilter());             File [] mainFileList = file.listFiles( new PNGFileFilter());                           for (File tempFile : mainFileList) {                 System.out.println(tempFile.getName());             }         } catch (Exception e) {             // TODO Auto-generated catch block             e.printStackTrace();         }               }       }     package com.test.testapplication.file;   import java.io.File; import java.io.FileFilter;   public class PNGFileFilter implements FileFilter {           @Override     public boolean accept(File file) {               if (file.isFile()) {             String fileName = file.getName();             if ( fileName.endsWith(".png"))                 return true;              else                 return false;         }         return false;               }   }   package com.test.testapplication.file;   import java.io.File; import java.io.FilenameFilter;   public class PNGFileNameFilter implements FilenameFilter {                 @Override     public boolean accept(File dir, String fileName) {                                        if ( fileName.endsWith(".png"))             return true;                                       return false;     }   }