至于窗户，我走这边。

    com.sun.management.OperatingSystemMXBean os = (com.sun.management.OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();

    long physicalMemorySize = os.getTotalPhysicalMemorySize();
    long freePhysicalMemory = os.getFreePhysicalMemorySize();
    long freeSwapSize = os.getFreeSwapSpaceSize();
    long commitedVirtualMemorySize = os.getCommittedVirtualMemorySize();

这里有详细的链接。

我认为最好的方法是通过Hyperic实现SIGAR API。它适用于大多数主要的操作系统(几乎所有现代的操作系统)，并且非常容易使用。开发者在他们的论坛和邮件列表上的反应非常积极。我还喜欢它是GPL2 Apache授权的。他们也提供了大量的Java示例!

SIGAR ==系统信息，收集和报告工具。

通过maven添加OSHI依赖:

<dependency>
    <groupId>com.github.dblock</groupId>
    <artifactId>oshi-core</artifactId>
    <version>2.2</version>
</dependency>

获得电池容量剩余百分比:

SystemInfo si = new SystemInfo();
HardwareAbstractionLayer hal = si.getHardware();
for (PowerSource pSource : hal.getPowerSources()) {
    System.out.println(String.format("%n %s @ %.1f%%", pSource.getName(), pSource.getRemainingCapacity() * 100d));
}

您可以从Runtime类中获得一些有限的内存信息。它确实不是您正在寻找的，但我认为为了完整性起见，我将提供它。这里有一个小例子。编辑:您还可以从java.io.File类获得磁盘使用信息。磁盘空间使用问题需要Java 1.6或更高版本。

public class Main {
  public static void main(String[] args) {
    /* Total number of processors or cores available to the JVM */
    System.out.println("Available processors (cores): " + 
        Runtime.getRuntime().availableProcessors());

    /* Total amount of free memory available to the JVM */
    System.out.println("Free memory (bytes): " + 
        Runtime.getRuntime().freeMemory());

    /* This will return Long.MAX_VALUE if there is no preset limit */
    long maxMemory = Runtime.getRuntime().maxMemory();
    /* Maximum amount of memory the JVM will attempt to use */
    System.out.println("Maximum memory (bytes): " + 
        (maxMemory == Long.MAX_VALUE ? "no limit" : maxMemory));

    /* Total memory currently available to the JVM */
    System.out.println("Total memory available to JVM (bytes): " + 
        Runtime.getRuntime().totalMemory());

    /* Get a list of all filesystem roots on this system */
    File[] roots = File.listRoots();

    /* For each filesystem root, print some info */
    for (File root : roots) {
      System.out.println("File system root: " + root.getAbsolutePath());
      System.out.println("Total space (bytes): " + root.getTotalSpace());
      System.out.println("Free space (bytes): " + root.getFreeSpace());
      System.out.println("Usable space (bytes): " + root.getUsableSpace());
    }
  }
}

不是你想要的，但是我建议你从common -lang3中查看ArchUtils和SystemUtils。它们还包含一些相关的辅助工具，例如:

import static org.apache.commons.lang3.ArchUtils.*;
import static org.apache.commons.lang3.SystemUtils.*;

System.out.printf("OS architecture: %s\n", OS_ARCH); // OS architecture: amd64
System.out.printf("OS name: %s\n", OS_NAME);         // OS name: Linux
System.out.printf("OS version: %s\n", OS_VERSION);   // OS version: 5.18.16-200.fc36.x86_64

System.out.printf("Is Linux? - %b\n", IS_OS_LINUX);     // Is Linux? - true
System.out.printf("Is Mac? - %b\n", IS_OS_MAC);         // Is Mac? - false
System.out.printf("Is Windows? - %b\n", IS_OS_WINDOWS); // Is Windows? - false

System.out.printf("JVM name: %s\n", JAVA_VM_NAME);       // JVM name: Java HotSpot(TM) 64-Bit Server VM
System.out.printf("JVM vendor: %s\n", JAVA_VM_VENDOR);   // JVM vendor: Oracle Corporation
System.out.printf("JVM version: %s\n", JAVA_VM_VERSION); // JVM version: 11.0.12+8-LTS-237

System.out.printf("Username: %s\n", getUserName()); // Username: johndoe
System.out.printf("Hostname: %s\n", getHostName()); // Hostname: garage-pc

var processor = getProcessor();
System.out.printf("CPU arch: %s\n", processor.getArch())  // CPU arch: BIT_64
System.out.printf("CPU type: %s\n", processor.getType()); // CPU type: X86

至于窗户，我走这边。

    com.sun.management.OperatingSystemMXBean os = (com.sun.management.OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();

    long physicalMemorySize = os.getTotalPhysicalMemorySize();
    long freePhysicalMemory = os.getFreePhysicalMemorySize();
    long freeSwapSize = os.getFreeSwapSpaceSize();
    long commitedVirtualMemorySize = os.getCommittedVirtualMemorySize();

这里有详细的链接。