Commons Io 简明教程

Apache Commons IO - NameFileComparator

NameFileComparator 比较两个文件的名称。它可用于使用文件名以区分大小写、不区分大小写或系统相关的区分大小写方式对文件列表或数组进行排序。

NameFileComparator compare the names of two files. It can be used to sort the lists or arrays of files, using their name, either in a case-sensitive, case-insensitive or system dependent case sensitive way.

Class Declaration

以下是声明：

Following is the declaration for

org.apache.commons.io.comparator.NameFileComparator 类：

org.apache.commons.io.comparator.NameFileComparator Class −

public class NameFileComparator
   extends Object implements Serializable

Example of NameFileComparator Class

以下是我们需要解析的输入文件 -

Here is the input file we need to parse −

Welcome to TutorialsPoint. Simply Easy Learning.

IOTester.java

import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import org.apache.commons.io.IOCase;
import org.apache.commons.io.comparator.NameFileComparator;
import org.apache.commons.io.filefilter.FileFileFilter;
public class IOTester {
   public static void main(String[] args) {
      try {
         usingNameFileComparator();
      } catch(IOException e) {
         System.out.println(e.getMessage());
      }
   }
   public static void usingNameFileComparator() throws IOException {
      //get the current directory
      File currentDirectory = new File(".");
      NameFileComparator comparator = new
      NameFileComparator(IOCase.INSENSITIVE);
      File[] sortedFiles = comparator.sort(currentDirectory.listFiles((FileFilter)FileFileFilter.FILE));
      System.out.println("Sorted By Name: ");
      for(File file:sortedFiles) {
         System.out.println(file.getName());
      }
   }
}

Output

它将打印以下结果。

It will print the following result.

Sorted By Name:
.classpath
.project
input.txt