Package org.openjdk.jmc.common.version

Class JavaVersion

java.lang.Object
org.openjdk.jmc.common.version.JavaVersion
public class JavaVersion extends Object
Parses the java.version property and extracts the components to able to compare versions. Handles Java 9 version 9.1.3.0-ea (spec.feature.security.patch[-prebuildinfo]). Handles old Java versions 1.8.0_40-ea (major.minor.micro_update[-prebuildinfo]). Does not do any interpretation of the numbers. Does not handle comparison between 9.1.0 and 1.9.2.0 (a version which should never exist).

  • Field Details

    • UNKNOWN

      public static final int UNKNOWN
      Constant denoting an unparsable number.
      See Also:

  • Constructor Details

    • JavaVersion

      public JavaVersion(String version)
      Create an instance based on a Java version string as reported by a Java runtime.
      Parameters:
      version - Java version string

    • JavaVersion

      public JavaVersion(int... versionNumbers)
      Create an instance based on version numbers.
      Parameters:
      versionNumbers - One or more numbers denoting a Java version. The first number is the major version, the second number is the minor version, the third number is the micro version, and the fourth number is the update version. If one or more numbers are omitted, then zeroes will be used for them.

    • JavaVersion

      public JavaVersion(boolean isEarlyAccess, int... versionNumbers)
      Create an instance based on version numbers.
      Parameters:
      isEarlyAccess - true if this version should indicate an early access build, false otherwise
      versionNumbers - One or more numbers denoting a Java version. The first number is the major version, the second number is the minor version, the third number is the micro version, and the fourth number is the update version. If one or more numbers are omitted, then zeroes will be used for them.

  • Method Details

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • equals

      public boolean equals(Object obj)
      Overrides:
      equals in class Object

    • isGreaterOrEqualThan

      public boolean isGreaterOrEqualThan(JavaVersion otherVersion)
      Compare another version instance with this instance.
      Parameters:
      otherVersion - version to compare with
      Returns:
      true if this instance is greater than or equal to otherVersion

    • isGreaterOrEqualThanDisregardEa

      public boolean isGreaterOrEqualThanDisregardEa(JavaVersion otherVersion)
      Compare another version instance with this instance disregarding early access status.
      Parameters:
      otherVersion - version to compare with
      Returns:
      true if this instance is greater than or equal to otherVersion

    • isSameMajorVersion

      public boolean isSameMajorVersion(JavaVersion otherVersion)
      Check if another version instance has the same major version as this instance.
      Parameters:
      otherVersion - version to compare with
      Returns:
      true if this instance has the same major version number as otherVersion

    • getMajorVersion

      public int getMajorVersion()
      Returns:
      the major version number

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • isEarlyAccess

      public boolean isEarlyAccess()
      Returns:
      true if this instance indicates an early access release