SystemInfo (Armeria 0.92.0 API reference)

java.lang.Object
- com.linecorp.armeria.common.util.SystemInfo

```
public final class SystemInfo
extends Object
```
Provides utilities for accessing the information about the current system and process.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static long`	`currentTimeMicros()`	Returns the number of microseconds since the epoch (00:00:00, 01-Jan-1970, GMT).
`static String`	`hostname()`	Returns the local hostname.
`static int`	`javaVersion()`	Returns the major version of the current Java Virtual Machine.
`static boolean`	`jettyAlpnOptionalOrAvailable()`	Whether the environment either supports ALPN natively or includes Jetty ALPN.
`static int`	`pid()`	Returns the current process ID.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - javaVersion
```
public static int javaVersion()
```
    Returns the major version of the current Java Virtual Machine.
  - hostname
```
public static String hostname()
```
    Returns the local hostname.
  - jettyAlpnOptionalOrAvailable
```
public static boolean jettyAlpnOptionalOrAvailable()
```
    Whether the environment either supports ALPN natively or includes Jetty ALPN.
  - pid
```
public static int pid()
```
    Returns the current process ID.
    
    Throws:
    
    IllegalStateException - if failed to retrieve the current process ID.
  - currentTimeMicros
```
public static long currentTimeMicros()
```
    Returns the number of microseconds since the epoch (00:00:00, 01-Jan-1970, GMT). The precision of the returned value may vary depending on Java version. Currently, Java 9 or above is required for microsecond precision. System.currentTimeMillis() * 1000 is returned on Java 8.