Commons Io 简明教程
Apache Commons IO - PrefixFileFilter
PrefixFileFilter 筛选基于前缀的文件。
Class Declaration
以下是对 org.apache.commons.io.filefilter.PrefixFileFilter 类的声明 −
public class PrefixFileFilter
extends AbstractFileFilter implements Serializable
Example of PrefixFileFilter Class
以下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,然后筛选名称以 input 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]);
}
}
}