Java如何创建人类可读的文件大小？
本示例演示如何使用ApacheCommonsIO库的FileUtils类创建易于阅读的文件大小。该方法以字节为单位获取文件大小，并以字节，千字节，兆字节，千兆字节等形式返回人类可读的文件大小显示。byteCountToDisplaySize()
package org.nhooo.example.commons.io;
import org.apache.commons.io.FileUtils;
import java.io.File;
public class ReadableFileSize {
public static void main(String[] args) {
File file = new File("/Users/nhooo/Downloads/Java/JDK/jdk-6u7-linux-i586.bin");
long size = file.length();
String display = FileUtils.byteCountToDisplaySize(size);
System.out.println("Name = " + file.getName());
System.out.println("Size = " + size);
System.out.println("Display = " + display);
}
}这是我们程序的结果：
Name = jdk-6u7-linux-i586.bin Size = 78482905 Display = 74 MB
Maven依赖
<!-- http://repo1.maven.org/maven2/commons-io/commons-io/2.6/commons-io-2.6.jar -->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.6</version>
</dependency>