Package com.thoughtworks.xstream.core

Class JVM

  • All Implemented Interfaces:
    Caching
    public class JVM
extends java.lang.Object
implements Caching

    • Field Detail

      • isAWTAvailable

        private static final boolean isAWTAvailable

      • isSwingAvailable

        private static final boolean isSwingAvailable

      • isSQLAvailable

        private static final boolean isSQLAvailable

      • canAllocateWithUnsafe

        private static final boolean canAllocateWithUnsafe

      • canWriteWithUnsafe

        private static final boolean canWriteWithUnsafe

      • optimizedTreeSetAddAll

        private static final boolean optimizedTreeSetAddAll

      • optimizedTreeMapPutAll

        private static final boolean optimizedTreeMapPutAll

      • canParseUTCDateFormat

        private static final boolean canParseUTCDateFormat

      • canParseISO8601TimeZoneInDateFormat

        private static final boolean canParseISO8601TimeZoneInDateFormat

      • canCreateDerivedObjectOutputStream

        private static final boolean canCreateDerivedObjectOutputStream

      • vendor

        private static final java.lang.String vendor

      • majorJavaVersion

        private static final float majorJavaVersion

      • reflectionProviderType

        private static final java.lang.Class reflectionProviderType

      • base64Codec

        private static final StringCodec base64Codec

    • Constructor Detail

      • JVM

        public JVM()
        Deprecated.
        As of 1.4.5 use the static methods of JVM.

    • Method Detail

      • getMajorJavaVersion

        private static final float getMajorJavaVersion()
        Parses the java version system property to determine the major java version, i.e. 1.x
        Returns:
        A float of the form 1.x

      • is14

        public static boolean is14()
        Deprecated.
        As of 1.4.4, minimal JDK version is 1.4 already

      • is15

        public static boolean is15()
        Deprecated.
        As of 1.4.4, minimal JDK version will be 1.7 for next major release

      • is16

        public static boolean is16()
        Deprecated.
        As of 1.4.4, minimal JDK version will be 1.7 for next major release

      • is17

        public static boolean is17()
        Deprecated.
        As of 1.4.10, minimal JDK version will be 1.7 for next major release
        Since:
        1.4

      • is18

        public static boolean is18()
        Deprecated.
        As of 1.4.11 use isVersion(int).
        Since:
        1.4

      • is19

        public static boolean is19()
        Deprecated.
        As of 1.4.10 use isVersion(int).
        Since:
        1.4.8

      • is9

        public static boolean is9()
        Deprecated.
        As of 1.4.11 use isVersion(int)
        Since:
        1.4.10

      • isVersion

        public static boolean isVersion​(int version)
        Checks current runtime against provided major Java version.
        Parameters:
        version - the requested major Java version
        Returns:
        true if current runtime is at least the provided major version
        Since:
        1.4.11

      • isIBM

        private static boolean isIBM()

      • isAndroid

        private static boolean isAndroid()
        Since:
        1.4

      • loadClassForName

        public static java.lang.Class loadClassForName​(java.lang.String name)
        Load a XStream class for the given name.

        This method is not meant to use loading arbitrary classes. It is used by XStream bootstrap until it is able to use the user provided or the default ClassLoader.

        Since:
        1.4.5

      • loadClass

        public java.lang.Class loadClass​(java.lang.String name)
        Deprecated.
        As of 1.4.5 use loadClassForName(String)

      • loadClassForName

        public static java.lang.Class loadClassForName​(java.lang.String name,
                                               boolean initialize)
        Load a XStream class for the given name.

        This method is not meant to use loading arbitrary classes. It is used by XStream bootstrap until it is able to use the user provided or the default ClassLoader.

        Since:
        1.4.5

      • loadClass

        public java.lang.Class loadClass​(java.lang.String name,
                                 boolean initialize)
        Deprecated.
        As of 1.4.5 use loadClassForName(String, boolean)
        Since:
        1.4.4

      • newReflectionProvider

        public static ReflectionProvider newReflectionProvider()
        Create the best matching ReflectionProvider.
        Returns:
        a new instance
        Since:
        1.4.5

      • newReflectionProvider

        public static ReflectionProvider newReflectionProvider​(FieldDictionary dictionary)
        Create the best matching ReflectionProvider.
        Parameters:
        dictionary - the FieldDictionary to use by the ReflectionProvider
        Returns:
        a new instance
        Since:
        1.4.5

      • getStaxInputFactory

        public static java.lang.Class getStaxInputFactory()
                                           throws java.lang.ClassNotFoundException
        Get the XMLInputFactory implementation used normally by the current Java runtime as standard.

        In contrast to XMLInputFactory.newFactory() this method will ignore any implementations provided with the system property javax.xml.stream.XMLInputFactory, implementations configured in lib/stax.properties or registered with the Service API.

        Returns:
        the XMLInputFactory implementation or null
        Throws:
        java.lang.ClassNotFoundException - if the standard class cannot be found
        Since:
        1.4.5

      • getStaxOutputFactory

        public static java.lang.Class getStaxOutputFactory()
                                            throws java.lang.ClassNotFoundException
        Get the XMLOutputFactory implementation used normally by the current Java runtime as standard.

        In contrast to XMLOutputFactory.newFactory() this method will ignore any implementations provided with the system property javax.xml.stream.XMLOutputFactory, implementations configured in lib/stax.properties or registered with the Service API.

        Returns:
        the XMLOutputFactory implementation or null
        Throws:
        java.lang.ClassNotFoundException - if the standard class cannot be found
        Since:
        1.4.5

      • getBase64Codec

        public static StringCodec getBase64Codec()
        Get an available Base64 implementation. Prefers java.util.Base64 over DataTypeConverter from JAXB over XStream's own implementation.
        Returns:
        a Base64 codec implementation
        Since:
        1.4.11

      • canUseSunUnsafeReflectionProvider

        private static boolean canUseSunUnsafeReflectionProvider()

      • canUseSunLimitedUnsafeReflectionProvider

        private static boolean canUseSunLimitedUnsafeReflectionProvider()

      • reverseFieldDefinition

        public static boolean reverseFieldDefinition()
        Deprecated.
        As of 1.4.5

      • isAWTAvailable

        public static boolean isAWTAvailable()
        Checks if AWT is available.
        Since:
        1.4.5

      • supportsAWT

        public boolean supportsAWT()
        Deprecated.
        As of 1.4.5 use isAWTAvailable()
        Checks if the JVM supports AWT.

      • isSwingAvailable

        public static boolean isSwingAvailable()
        Checks if Swing is available.
        Since:
        1.4.5

      • supportsSwing

        public boolean supportsSwing()
        Deprecated.
        As of 1.4.5 use isSwingAvailable()
        Checks if the JVM supports Swing.

      • isSQLAvailable

        public static boolean isSQLAvailable()
        Checks if SQL is available.
        Since:
        1.4.5

      • supportsSQL

        public boolean supportsSQL()
        Deprecated.
        As of 1.4.5 use isSQLAvailable()
        Checks if the JVM supports SQL.

      • hasOptimizedTreeSetAddAll

        public static boolean hasOptimizedTreeSetAddAll()
        Checks if TreeSet.addAll is optimized for SortedSet argument.
        Since:
        1.4

      • hasOptimizedTreeMapPutAll

        public static boolean hasOptimizedTreeMapPutAll()
        Checks if TreeMap.putAll is optimized for SortedMap argument.
        Since:
        1.4

      • canParseUTCDateFormat

        public static boolean canParseUTCDateFormat()

      • canParseISO8601TimeZoneInDateFormat

        public static boolean canParseISO8601TimeZoneInDateFormat()
        Since:
        1.4.8

      • canCreateDerivedObjectOutputStream

        public static boolean canCreateDerivedObjectOutputStream()
        Since:
        1.4.6

      • flushCache

        public void flushCache()
        Deprecated.
        As of 1.4.5 no functionality
        Specified by:
        flushCache in interface Caching

      • main

        public static void main​(java.lang.String[] args)