PrefixFileFilter 类( PrefixFileFilter Class)
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2023-12-01
根据前缀过滤文件。
Class 声明 (Class Declaration)
以下是org.apache.commons.io.filefilter.PrefixFileFilter类的声明 -
public class PrefixFileFilter
extends AbstractFileFilter implements Serializable
PrefixFileFilter类的示例
这是我们需要解析的输入文件 -
Welcome to IoWiki. 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]);
}
}
}
输出 (Output)
它将打印以下结果。
All files and Folders.
.classpath
.project
.settings
bin
input.txt
src
File with extenstion txt
input.txt