JavaUtils (Jenkins core 2.356 API)

java.lang.Object
- jenkins.util.java.JavaUtils

@Restricted(org.kohsuke.accmod.restrictions.NoExternalUse.class)
public class JavaUtils
extends Object

Utility class for Java environment management and checks.

Author:: Oleg Nenashev

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static io.jenkins.lib.versionnumber.JavaSpecificationVersion`	`getCurrentJavaRuntimeVersionNumber()`	Returns the JVM's current version as a `VersionNumber` instance.
`static String`	`getCurrentRuntimeJavaVersion()`	Returns the JVM's current version as a `String`.
`static boolean`	`isRunningWithJava8OrBelow()`	Check whether the current JVM is running with Java 8 or below
`static boolean`	`isRunningWithPostJava8()`	Check whether the current JVM is running with Java 9 or above.

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

- Method Detail
  - isRunningWithJava8OrBelow
```
public static boolean isRunningWithJava8OrBelow()
```
    Check whether the current JVM is running with Java 8 or below
    
    Returns:
    
    true if it is Java 8 or older version
  - isRunningWithPostJava8
```
public static boolean isRunningWithPostJava8()
```
    Check whether the current JVM is running with Java 9 or above.
    
    Returns:
    
    true if it is Java 9 or above
  - getCurrentJavaRuntimeVersionNumber
```
public static io.jenkins.lib.versionnumber.JavaSpecificationVersion getCurrentJavaRuntimeVersionNumber()
```
    Returns the JVM's current version as a VersionNumber instance.
  - getCurrentRuntimeJavaVersion
```
public static String getCurrentRuntimeJavaVersion()
```
    Returns the JVM's current version as a String. See https://openjdk.java.net/jeps/223 for the expected format.
    
    Until Java 8 included, the expected format should be starting with 1.x
    
    Starting with Java 9, cf. JEP-223 linked above, the version got simplified in 9.x, 10.x, etc.
    See Also:
    
    System.getProperty(String)