Apache Commons IO OrFileFilter

跨文件筛选器列表提供条件OR逻辑。如果列表中的任何过滤器返回true，则返回true。否则，它返回false。

类声明

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

public class OrFileFilter
   extends AbstractFileFilter implements ConditionalFileFilter, Serializable

OrFileFilter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，然后过滤名称以。开头的文件。或以t结尾。

IOTester.java

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

import org.apache.commons.io.filefilter.OrFileFilter;
import org.apache.commons.io.filefilter.PrefixFileFilter;
import org.apache.commons.io.filefilter.WildcardFileFilter;

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

   public static void usingOrFileFilter() 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 starting with . or ends with t\n");
      String[] filesNames = currentDirectory.list(
         new OrFileFilter(new PrefixFileFilter("."), new WildcardFileFilter("*t")));
      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 starting with . or ends with t

.classpath
.project
.settings
input.txt