Commons Io 简明教程

Apache Commons IO - WildcardFileFilter

Commons IO 中的 WildcardFileFilter 使用提供的通配符过滤文件。

WildcardFileFilter in Commons IO filters the files using the supplied wildcards.

Class Declaration

以下是 org.apache.commons.io.filefilter.WildcardFileFilter 类的声明：

Following is the declaration for org.apache.commons.io.filefilter.WildcardFileFilter Class −

public class WildcardFileFilter
   extends AbstractFileFilter implements Serializable

Example of WildcardFileFilter Class

这里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.

让我们打印当前目录中的所有文件和目录，然后过滤名称以 t 结尾的文件。

Let’s print all files and directories in the current directory and then, filter a file whose name ends with t.

IOTester.java

import java.io.File;
import java.io.IOException;
import org.apache.commons.io.filefilter.WildcardFileFilter;
public class IOTester {
   public static void main(String[] args) {
      try {
         usingWildcardFileFilter();
      } catch(IOException e) {
         System.out.println(e.getMessage());
      }
   }
   public static void usingWildcardFileFilter() 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 name ending with t.\n");
      String[] filesNames = currentDirectory.list( new  WildcardFileFilter("*t"));
      for( int i = 0; i < filesNames.length; i++ ) {
        System.out.println(filesNames[i]);
      }
   }
}

Output

它将打印以下结果。

It will print the following result.

All files and Folders.

.classpath
.project
.settings
bin
input.txt
src

File name ending with t

.project
input.txt