java代码硬盘使用比例 java代码硬盘使用比例是多少

java程序 做一个这样的程序:统计某磁盘的使用情况 统计在这磁盘中，各种文件的个数和占磁盘空间

import java.io.File;

import java.io.FileFilter;

import java.util.HashMap;

import java.util.Map;

public class T1 {

    /**存放文件后缀 对应的大小*/

    private static final MapString, Long sizeMap = new HashMapString, Long();

    /**存放文件后缀 对应的个数*/

    private static final MapString, Integer countMap = new HashMapString, Integer();

    

    

    public static void main(String[] args) {

        String path = "F:";

        filter(path);

        

        for(String key :sizeMap.keySet()) {

            System.out.println("后缀:" + key + "\t字节:" + (sizeMap.get(key)==null?0:sizeMap.get(key)) + "\t个数为" + (countMap.get(key)==null?0:countMap.get(key)));

        }

        

    }

    

    

    public static void filter(String path){

        File file = new File(path);

        file.listFiles(new FileFilter() {

            @Override

            public boolean accept(File f) {

                if(f.isDirectory()) {

                    filter(f.getPath());

                    return false;

                }

                String fileName = f.getName();

                

                if(fileName.indexOf(".") == -1) {

                    return false;

                }

                

                String suffix =fileName.split("\\.")[1];//获得文件后缀

                //把文件后缀相同的字节数相加

                Long size = (sizeMap.get(suffix)==null?0:sizeMap.get(suffix)) + f.length();

                sizeMap.put(suffix, size);

                //把文件后缀相同的个数相加

                Integer count = (countMap.get(suffix)==null?0:countMap.get(suffix)) + 1;            

                countMap.put(suffix, count);

                return false;

            }

        });

    }

}

运行结果太长了，我随便截取点吧：

后缀:1-1    字节:1820    个数为2

后缀:dll_2016-05-23_000    字节:345    个数为1

后缀:dat    字节:20253796    个数为28

后缀:1-2    字节:1302    个数为2

后缀:md    字节:53548    个数为4

后缀:MF    字节:1105    个数为10

后缀:html    字节:745985    个数为75

后缀:lrc    字节:6872    个数为6

后缀:9-2    字节:1478    个数为2

后缀:dll_2016-03-31_000    字节:55    个数为1

后缀:9-3    字节:1436    个数为2

后缀:all    字节:3003366    个数为4

后缀:66b    字节:6786365    个数为1

后缀:withoutimage    字节:383536    个数为4

后缀:eclipse    字节:27666    个数为104

后缀:woff    字节:437588    个数为20

后缀:spr    字节:15084930    个数为311

后缀:mdl    字节:79521996    个数为487

后缀:m3d    字节:199680    个数为3

后缀:JPG    字节:261216    个数为113

后缀:fgd    字节:37819    个数为1

后缀:79d    字节:23795338    个数为3

后缀:79e    字节:8001129    个数为1

后缀:gif    字节:1453085    个数为597

后缀:dll_2016-04-26_000    字节:115    个数为1

后缀:70LeagueV    字节:549361    个数为1

后缀:lst    字节:47492    个数为13

后缀:26q_v1    字节:7284946    个数为1

后缀:sql    字节:87909    个数为6

后缀:11-4    字节:1230    个数为2

后缀:11-3    字节:1804    个数为2

后缀:timer    字节:10452    个数为3

后缀:html5only    字节:467448    个数为4

后缀:dll_2016-05-17_000    字节:115    个数为1

后缀:11-2    字节:1770    个数为2

后缀:11-1    字节:2032    个数为2

后缀:flexslider-min    字节:65025    个数为3

后缀:dll_2016-07-01_000    字节:13427    个数为2

后缀:greenxf    字节:97562    个数为1

特地敲了代码 要采纳啊，我这测试的是F盘 是可以的， 你有什么疑问  可追问我

相关问答

Q1: java程序员500g移动硬盘够用吗

java程序员500g移动硬盘不够用，因为作为程序员的话，所要配备的程序是比较多的，而且书籍方面以及教程方面也是非常大的，所以500G移动硬盘是不够用的。

Q2: java怎样获取CPU占用率和硬盘占用率

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Collections;

import java.util.Comparator;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

public class T {

private static final int DRIVE_TYPE_HARD = 3;

private static final String CHARSET = "GBK";

private static final String CAP_LOAD_PERCENTAGE = "LoadPercentage";

private static final String CAP_CAPACITY = "Capacity";

private static final String CAP_CAPTION = "Caption";

private static final String CAP_DRIVE_LETTER = "DriveLetter";

private static final String CAP_DRIVE_TYPE = "DriveType";

private static final String CAP_FREE_SPACE = "FreeSpace";

private static final ListString CAPS_VOLUME = Arrays.asList(CAP_CAPACITY,

CAP_CAPTION, CAP_DRIVE_LETTER, CAP_DRIVE_TYPE, CAP_FREE_SPACE);

private static final String CMD_CPU = "wmic cpu get " + CAP_LOAD_PERCENTAGE;

private static final String CMD_VOLUME = "wmic volume get " + CAP_CAPACITY

+ "," + CAP_CAPTION + "," + CAP_DRIVE_LETTER + "," + CAP_DRIVE_TYPE + ","

+ CAP_FREE_SPACE;

public static void main(String[] args) throws IOException {

printDiskUsages(getDiskUsages());

printCpuUsage(getCpuLoadPercentage());

}

private static void printDiskUsages(ListDiskUsage diskUsages) {

for (DiskUsage diskUsage : diskUsages) {

System.out.printf("%s占用率java代码硬盘使用比例：%.2f%%\n", diskUsage.caption, diskUsage.usage);

}

}

private static void printCpuUsage(double cpuLoadPercentage) {

System.out.printf("CPU占用率java代码硬盘使用比例：%.2f%%\n", cpuLoadPercentage);

}

/**

* 取得 CPU 占用率。

*

* @return

* @throws IOException

*/

private static double getCpuLoadPercentage() throws IOException {

Process process = Runtime.getRuntime().exec(CMD_CPU);

InputStream is = process.getInputStream();

BufferedReader br = new BufferedReader(new InputStreamReader(is, CHARSET));

br.readLine(); // 舍弃标题行

br.readLine(); // 舍弃标题行下空行

String percentageLine = br.readLine();

if (percentageLine == null) {

return 0;

}

return Double.parseDouble(percentageLine.trim());

}

/**

* 取得硬盘占用率。

*

* @return

* @throws IOException

*/

private static ListDiskUsage getDiskUsages() throws IOException {

Process process = Runtime.getRuntime().exec(CMD_VOLUME);

InputStream is = process.getInputStream();

BufferedReader br = new BufferedReader(new InputStreamReader(is, CHARSET));

String captionLine = br.readLine(); // 舍弃标题行

br.readLine(); // 舍弃标题行下空行

MapString, Integer captionToIndex = parseVolumeCaptionLine(captionLine);

String line;

ListDiskUsage result = new ArrayListDiskUsage();

while ((line = br.readLine()) != null) {

if (line.length() == 0) {

// 舍弃空行

continue;

}

DiskUsage diskUsage = parseVolumeLine(line, captionToIndex);

if (diskUsage != null) {

result.add(diskUsage);

}

}

Collections.sort(result, new DiskUsageComparator());

return result;

}

private static MapString, Integer parseVolumeCaptionLine(String captionLine) {

MapString, Integer captionToIndex = new HashMapString, Integer();

for (String caption : CAPS_VOLUME) {

captionToIndex.put(caption, captionLine.indexOf(caption));

}

return captionToIndex;

}

private static DiskUsage parseVolumeLine(String line,

MapString, Integer captionToIndex) {

int driveType = parseVolumeDriveType(line, captionToIndex);

if (driveType != DRIVE_TYPE_HARD) {

return null;

}

String driveLetter = parseVolumeDriveLetter(line, captionToIndex);

if (!isValidDriveLetter(driveLetter)) {

return null;

}

String caption = parseVolumeCaption(line, captionToIndex);

long capacity = parseVolumeCapacity(line, captionToIndex);

long freeSpace = parseVolumeFreeSpace(line, captionToIndex);

return new DiskUsage(caption,

((capacity - freeSpace) / (double) capacity) * 100);

}

private static boolean isValidDriveLetter(String driveLetter) {

if (driveLetter.length() != 2) {

return false;

}

return Character.isUpperCase(driveLetter.charAt(0));

}

private static int parseVolumeDriveType(String line,

MapString, Integer captionToIndex) {

String str = line.substring(captionToIndex.get(CAP_DRIVE_TYPE),

captionToIndex.get(CAP_FREE_SPACE));

return Integer.parseInt(str.trim());

}

private static String parseVolumeDriveLetter(String line,

MapString, Integer captionToIndex) {

String str = line.substring(captionToIndex.get(CAP_DRIVE_LETTER),

captionToIndex.get(CAP_DRIVE_TYPE));

return str.trim();

}

private static String parseVolumeCaption(String line,

MapString, Integer captionToIndex) {

String str = line.substring(captionToIndex.get(CAP_CAPTION),

captionToIndex.get(CAP_DRIVE_LETTER));

return str.trim();

}

private static long parseVolumeCapacity(String line,

MapString, Integer captionToIndex) {

String str = line.substring(captionToIndex.get(CAP_CAPACITY),

captionToIndex.get(CAP_CAPTION));

return Long.parseLong(str.trim());

}

private static long parseVolumeFreeSpace(String line,

MapString, Integer captionToIndex) {

String str = line.substring(captionToIndex.get(CAP_FREE_SPACE));

return Long.parseLong(str.trim());

}

private static class DiskUsageComparator implements ComparatorDiskUsage {

@Override

public int compare(DiskUsage o1, DiskUsage o2) {

return o1.caption.compareTo(o2.caption);

}

}

private static class DiskUsage {

public String caption;

public double usage;

public DiskUsage(String caption, Double usage) {

this.caption = caption;

this.usage = usage;

}

}

}

Q3: Java获取服务器磁盘负载率

1、在远程server里搭建一个http服务java代码硬盘使用比例，并支持某种服务端语言（如.net或php之类）

2、用服务端语言获取到服务器的磁盘信息java代码硬盘使用比例，把结果输出

3、在本地用JS写一段AJAX脚本，远程请求服务端写好的程序，得到结果，并展示给用户

html

head

title提取硬盘序列号/title

script

function disk() {//硬盘序列号 信息

var locator = new ActiveXObject ("WbemScripting.SWbemLocator");

var service = locator.ConnectServer(".");

var properties = service.ExecQuery("SELECT * FROM Win32_DiskDrive");

var e = new Enumerator (properties);

document.write("table border=1");

for (;!e.atEnd();e.moveNext ())

{

var p = e.item ();

document.write("tr");

document.write("td" + p.signature + "/td");

document.write("/tr");

}

document.write("/table");

}

/script

/head

body

input type="button" value="硬盘序列号" onclick="disk()"

/body

/html

在这上找的代码：

对于写过ASP或.net 的人来说,通过asp或.net 语言来获得客户端的硬件信息是很熟悉的.但如何通过javascript这种客户端脚本来获得客户端的信息呢?请看以下实例:

!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"

html

head

titlejavascript获得客户端硬件信息-;/title

meta name="GENERATOR" content="Microsoft Visual Studio .NET

7.1"

meta name="vs_targetSchema"

content=""

script id=clientEventHandlersJS language=javascript

!--

function Button2_onclick() {//CPU 信息

var locator = new ActiveXObject ("WbemScripting.SWbemLocator");

var service = locator.ConnectServer(".");

var properties = service.ExecQuery("SELECT * FROM Win32_Processor");

var e = new Enumerator (properties);

document.write("table border=1");

for (;!e.atEnd();e.moveNext ())

{

var p = e.item ();

document.write("tr");

document.write("td" + p.Caption + "/td");

document.write("td" + p.DeviceID + "/td");

document.write("td" + p.Name + "/td");

document.write("td" + p.CpuStatus + "/td");

document.write("td" + p.Availability + "/td");

document.write("td" + p.Level + "/td");

document.write("td" + p.ProcessorID + "/td");

document.write("td" + p.SystemName + "/td");

document.write("td" + p.ProcessorType + "/td");

document.write("/tr");

}

document.write("/table");

}

function Button1_onclick() {//软盘信息

var locator = new ActiveXObject ("WbemScripting.SWbemLocator");

var service = locator.ConnectServer(".");

var properties = service.ExecQuery("SELECT * FROM Win32_FloppyDrive");

var e = new Enumerator (properties);

document.write("table border=1");

for (;!e.atEnd();e.moveNext ())

{

var p = e.item ();

document.write("tr");

document.write("td" + p.Description + "/td");

document.write("td" + p.DeviceID + "/td");

document.write("td" + p.Status + "/td");

document.write("td" + p.Manufacuturer + "/td");

document.write("/tr");

}

document.write("/table");

}

function Button1_onclick() {//CD-ROM 信息

var locator = new ActiveXObject ("WbemScripting.SWbemLocator");

var service = locator.ConnectServer(".");

var properties = service.ExecQuery("SELECT * FROM Win32_CDROMDrive");

var e = new Enumerator (properties);

document.write("table border=1");

for (;!e.atEnd();e.moveNext ())

{

var p = e.item ();

document.write("tr");

document.write("td" + p.Caption + "/td");

document.write("td" + p.Description + "/td");

document.write("td" + p.Drive + "/td");

document.write("td" + p.Status + "/td");

document.write("td" + p.MediaLoaded + "/td");

document.write("/tr");

}

document.write("/table");

}

function Button1_onclick() {//键盘信息

var locator = new ActiveXObject ("WbemScripting.SWbemLocator");

var service = locator.ConnectServer(".");

var properties = service.ExecQuery("SELECT * FROM Win32_Keyboard");

var e = new Enumerator (properties);

document.write("table border=1");

for (;!e.atEnd();e.moveNext ())

{

var p = e.item ();

document.write("tr");

document.write("td" + p.Description + "/td");

document.write("td" + p.Name + "/td");

document.write("td" + p.Status + "/td");

document.write("/tr");

}

document.write("/table");

}

function Button1_onclick() {//主板信息

var locator = new ActiveXObject ("WbemScripting.SWbemLocator");

var service = locator.ConnectServer(".");

var properties = service.ExecQuery("SELECT * FROM Win32_BaseBoard");

var e = new Enumerator (properties);

document.write("table border=1");

for (;!e.atEnd();e.moveNext ())

{

var p = e.item ();

document.write("tr");

document.write("td" + p.HostingBoard + "/td");

document.write("td" + p.Manufacturer + "/td");

document.write("td" + p.PoweredOn + "/td");

document.write("td" + p.Product + "/td");

document.write("td" + p.SerialNumber + "/td");

document.write("td" + p.Version + "/td");

document.write("/tr");

}

document.write("/table");

}

//--

/script

/head

body

INPUT id="Button1" type="button" value="Button"

name="Button1" language=javascript onclick="return Button1_onclick()"

/body

/html

使用javascript方式获得客户端的信息主要的优点是,不需求服务器资源.不需求刷新网页.直接在客户端执行脚本获得显示.

在这上找到了硬盘序列号的参数：

\'获得硬盘序列号

Dim cmicWmi As New System.Management.ManagementObjectSearcher(\"SELECT * FROM Win32_DiskDrive\")

Dim Uint32 As UInt32

For Each cmicWmiObj As ManagementObject In cmicWmi.Get

Uint32 = cmicWmiObj(\"signature\")

Next

TextBox1.Text = Uint32.ToString

Q4: Java开发硬盘分区166G够不

硬盘区分166G够用了。

java内存用166G是足够的，1G是1024mb，166G就是169984mb，如果需要装的东西不是特别多足够使用的，不够使用可以扩充。

Java是一门面向对象的编程语言，不仅吸收了C++语言的各种优点，还摒弃了C++里难以理解的多继承、指针等概念，因此Java语言具有功能强大和简单易用两个特征。

Q5: Java获得内存使用，磁盘情况

import java io File;

/**

*

* jdk 下的磁盘使用情况例子

*/

public class Diskfree {

public static void main(String[] args) {

File[] roots = File listRoots();//获取磁盘分区列表

for (File file : roots) {

System out println(file getPath()+ 信息如下: );

System out println( 空闲未使用 = + file getFreeSpace()/ / / + G );//空闲空间

System out println( 已经使用 = + file getUsableSpace()/ / / + G );//可用空间

System out println( 总容量 = + file getTotalSpace()/ / / + G );//总空间

System out println();

}

}

}

java获得当前系统内存情况的代码如下

Java code

import java lang management ManagementFactory;

import sun management OperatingSystemMXBean;

public class OSTest {

public static void main(String[] args)

{

OperatingSystemMXBean o *** b = (OperatingSystemMXBean) ManagementFactory getOperatingSystemMXBean();

System out println( 系统物理内存总计 + o *** b getTotalPhysicalMemorySize() / / + MB );

System out println( 系统物理可用内存总计 + o *** b getFreePhysicalMemorySize() / / + MB );    }

}

ManagementFactory getOperatingSystemMXBean()返回的是java lang management里面的OperatingSystemMXBean

我们要用的是 sun management OperatingSystemMXBean;

在java类库中可以查到

public abstract Interface sun management OperatingSystemMXBean extends java lang management OperatingSystemMXBean

所以我们可以强制转换一下

想得到磁盘使用情况的话 可以看 楼的例子 要得到系统信息的话 使用System getProperty(String key);

方法

内存使用可以使用Runtime getRuntime() getTotalMemory() Runtime getRuntime() getFreeMemory()

纯JAVA是不能同操作系统打交到得 比如你要看CPU使用率 一般就是使用JNI技术（一些简单得系统熟悉 可以通过System getProperties()获得）

lishixinzhi/Article/program/Java/hx/201311/27126

java代码硬盘使用比例的介绍就聊到这里吧，感谢你花时间阅读本站内容，更多关于java代码硬盘使用比例是多少、java代码硬盘使用比例的信息别忘了在本站进行查找喔。