jenkins.util.java

Class JavaUtils

java.lang.Object

jenkins.util.java.JavaUtils

@Restricted(value=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 and Description
static VersionNumber	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 VersionNumber 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)