JavaUtils (Jenkins core 2.516 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

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 Details
- 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 JEP 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)