Commons Io 简明教程
Apache Commons IO - SizeFileComparator
SizeFileComparator 比较两个文件/目录的大小。可以根据其大小对文件列表或数组进行排序,也可以根据其子项数对目录进行排序。
Class Declaration
以下是声明:
org.apache.commons.io.comparator.SizeFileComparator 类 −
public class SizeFileComparator
extends Object implements Serializable
Example of SizeFileComparator Class
以下是我们需要解析的输入文件 -
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IOTester.java
import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import org.apache.commons.io.comparator.SizeFileComparator;
import org.apache.commons.io.filefilter.FileFileFilter;
public class IOTester {
public static void main(String[] args) {
try {
usingSizeFileComparator();
} catch(IOException e) {
System.out.println(e.getMessage());
}
}
public static void usingSizeFileComparator() throws IOException {
//get the current directory
File currentDirectory = new File(".");
SizeFileComparator comparator = new SizeFileComparator();
File[] sortedFiles = comparator.sort(currentDirectory.listFiles((FileFilter)FileFileFilter.FILE));
System.out.println("Sorted By Size: ");
for(File file:sortedFiles) {
System.out.println(file.getName() + ", size(kb) :" + file.length());
}
}
}