Hubitat Groovy 2.4 sandbox — allowed classes for import.

Source: https://docs2.hubitat.com/en/developer/allowed-imports

Verified: 2026-07-14 against platform 2.5.1.125.

Any import NOT on this list is rejected by the sandbox. One fully-qualified class per line.

java.util.ArrayList java.lang.Math java.math.BigDecimal java.math.BigInteger java.math.RoundingMode java.lang.Boolean java.lang.Byte java.io.ByteArrayInputStream java.io.ByteArrayOutputStream java.util.Calendar groovy.lang.Closure java.util.Collection java.util.Collections java.util.Date java.time.Duration java.time.LocalDateTime java.text.DecimalFormat java.lang.Double java.lang.Float java.util.GregorianCalendar java.util.HashMap java.util.HashMap.Entry java.util.HashMap.KeyIterator java.util.HashMap.KeySet java.util.HashMap.Values java.util.HashSet java.lang.Integer groovy.json.JsonBuilder java.util.LinkedHashMap java.util.LinkedHashMap.Entry java.util.LinkedHashSet java.util.LinkedList java.util.List java.lang.Long java.util.Map java.util.Map$Entry groovy.xml.MarkupBuilder java.util.Random java.util.Set java.lang.Short java.text.SimpleDateFormat java.lang.String java.lang.StringBuilder java.lang.CharSequence java.lang.Number java.lang.Character com.hubitat.app.DeviceWrapper com.hubitat.app.ChildDeviceWrapper com.hubitat.app.DeviceWrapperList com.hubitat.app.EventSubscriptionWrapper com.hubitat.app.InstalledAppWrapper com.hubitat.app.ParentDeviceWrapper com.hubitat.hub.domain.State com.hubitat.hub.domain.Event com.hubitat.hub.domain.Hub com.hubitat.hub.domain.Location java.io.StringReader java.io.StringWriter java.util.SubList groovy.time.TimeCategory groovy.lang.GString hubitat.scheduling.AsyncResponse java.util.TimeZone java.util.TreeMap java.util.TreeMap.Entry java.util.TreeMap.KeySet java.util.TreeMap.Values java.util.TreeSet java.util.regex.Matcher java.util.regex.Pattern java.net.URLDecoder java.net.URLEncoder java.util.UUID java.util.BitSet javax.xml.XPath javax.xml.XPathConstants javax.xml.XPathExpressionImpl javax.xml.XPathFactory javax.xml.XPathFactoryImpl javax.xml.XPathImpl sun.util.calendar.ZoneInfo com.sun.org.apache.xerces.internal.dom.DocumentImpl com.sun.org.apache.xerces.internal.dom.ElementImpl groovy.json.JsonOutput groovy.json.JsonSlurper groovy.util.Node groovy.util.NodeList groovy.util.XmlParser groovy.util.XmlSlurper groovy.xml.XmlUtil java.net.URI java.util.RandomAccessSubList org.apache.commons.codec.binary.Base64 org.apache.xerces.dom.DocumentImpl org.apache.xerces.dom.ElementImpl org.codehaus.groovy.runtime.EncodingGroovyMethods org.json.JSONArray org.json.JSONException org.json.JSONObject org.json.JSONObject.Null su.litvak.chromecast.api.v2.ChromeCasts java.security.MessageDigest javax.jmdns.JmDNS java.lang.Exception java.lang.Throwable groovyx.net.http.HttpResponseException groovyx.net.http.Method groovyx.net.http.ContentType java.lang.Object java.lang.StringBuffer java.io.OutputStream groovy.transform.Field groovy.transform.CompileStatic com.hubitat.zigbee.DataType javax.crypto.Mac javax.crypto.spec.SecretKeySpec java.security.InvalidKeyException java.security.Signature java.security.PrivateKey java.security.KeyFactory java.security.spec.PKCS8EncodedKeySpec javax.crypto.spec.IvParameterSpec javax.crypto.Cipher com.google.common.util.concurrent.Striped java.util.concurrent.Semaphore java.util.concurrent.TimeUnit java.util.concurrent.CopyOnWriteArrayList java.util.concurrent.ConcurrentLinkedQueue java.util.concurrent.ConcurrentHashMap java.util.concurrent.SynchronousQueue java.util.concurrent.atomic.AtomicInteger java.util.concurrent.atomic.AtomicIntegerArray org.quartz.CronExpression org.apache.commons.lang3.time.DateUtils java.time.Clock java.time.Duration java.time.Instant java.time.LocalDate java.time.LocalDateTime java.time.LocalTime java.time.MonthDay java.time.OffsetDateTime java.time.OffsetTime java.time.Period java.time.Year java.time.YearMonth java.time.ZonedDateTime java.time.ZoneId java.time.ZoneOffset java.time.DayOfWeek java.time.Month java.time.format.DateTimeFormatter java.time.format.DateTimeFormatterBuilder java.time.temporal.TemporalAdjusters java.util.zip.Deflater java.util.zip.Inflater java.util.zip.DeflaterInputStream java.util.zip.DeflaterOutputStream java.util.zip.GZIPInputStream java.util.zip.GZIPOutputStream java.util.zip.InflaterInputStream java.util.zip.InflaterOutputStream java.util.zip.ZipInputStream java.util.zip.ZipOutputStream java.util.zip.DataFormatException java.util.zip.ZipException java.util.zip.ZipError com.nimbusds.jose.PlainObject com.nimbusds.jose.JWSObject com.nimbusds.jose.Payload com.nimbusds.jose.JWEObject com.nimbusds.jose.JWEHeader com.nimbusds.jose.JOSEObjectType com.nimbusds.jose.JWSAlgorithm com.nimbusds.jose.JWSSigner com.nimbusds.jose.JWTHeader com.nimbusds.jose.JWTHeader$Builder com.nimbusds.jose.JWTClaimsSet com.nimbusds.jose.JWTClaimsSet$Builder com.nimbusds.jose.jwk.RSAKey com.nimbusds.jose.crypto.RSASSASigner com.nimbusds.jose.JWSHeader com.nimbusds.jose.JWSHeader$Builder com.nimbusds.jose.jwk.JWK com.nimbusds.jose.util.X509CertUtils com.nimbusds.jwt.PlainJWT com.nimbusds.jwt.SignedJWT com.nimbusds.jwt.EncryptedJWT com.nimbusds.jwt.JWTClaimsSet com.nimbusds.jwt.JWTClaimsSet$Builder java.util.Locale java.util.Locale.Builder javax.jmdns.ServiceEvent javax.jmdns.impl.ServiceEventImpl org.apache.commons.lang3.StringEscapeUtils org.apache.commons.lang3.StringUtils org.apache.commons.lang3.math.NumberUtils