Apache Commons IO SuffixFileFilter

根据后缀过滤文件。这用于检索特定类型的所有文件。

类声明

以下是 org.apache.commons.io.filefilter.SuffixFileFilter 类的声明-

public class SuffixFileFilter
   extends AbstractFileFilter implements Serializable

SuffixFileFilter类的示例

这是我们需要解析的输入文件 -

Welcome to CodingDict. Simply Easy Learning.

让我们打印当前目录中的所有文件和目录，然后过滤扩展名为txt的文件。

IOTester.java

import java.io.File;
import java.io.IOException;

import org.apache.commons.io.filefilter.SuffixFileFilter;

public class IOTester {
   public static void main(String[] args) {
      try {
         usingSuffixFileFilter();
      } catch(IOException e) {
         System.out.println(e.getMessage());
      }
   }

   public static void usingSuffixFileFilter() throws IOException {
      //get the current directory
      File currentDirectory = new File(".");

      //get names of all files and directory in current directory
      String[] files = currentDirectory.list();
      System.out.println("All files and Folders.\n");
      for( int i = 0; i < files.length; i++ ) {
         System.out.println(files[i]);
      }

      System.out.println("\nFile with extenstion txt\n");
      String[] filesNames = currentDirectory.list( new SuffixFileFilter("txt") );
      for( int i = 0; i < filesNames.length; i++ ) {
         System.out.println(filesNames[i]);
      }
   }
}

输出

它将打印以下结果。

All files and Folders.

.classpath
.project
.settings
bin
input.txt
src

File with extenstion txt

input.txt