根据前缀过滤文件.
以下是 org.apache.commons.io.filefilter的声明.PrefixFileFilter Class :
public class PrefixFileFilter extends AbstractFileFilter implements Serializable
这是我们需要解析的输入文件 :
Welcome to TutorialsPoint. Simply Easy Learning.
让我们打印当前目录中的所有文件和目录,然后过滤名称以输入开头的文件.
IOTester.java
import java.io.File; import java.io.IOException; import org.apache.commons.io.filefilter.PrefixFileFilter; public class IOTester { public static void main(String[] args) { try { usingPrefixFileFilter(); } catch(IOException e) { System.out.println(e.getMessage()); } } public static void usingPrefixFileFilter() 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 input\n"); String[] filesNames = currentDirectory.list( new PrefixFileFilter("input") ); for( int i = 0; i < filesNames.length; i++ ) { System.out.println(filesNames[i]); } } }
它将打印以下内容结果.
All files and Folders. .classpath .project .settings bin input.txt src File with extenstion txt input.txt