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Java 7
    java.applet
    - java.awt
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    - java.nio
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        spi
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        Arrays
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        Collection Hierarchy
        Collection Hierarchy concurrent
        Collection Hierarchy simple
        Collection List
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        Collections
        Comparator
        EventListener Hierarchy
        EventObject Hierarchy
        Iterator
        Legacy Collections
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        Map Simple
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        Random
        ResourceBundle
        Scanner, Formatter
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        UUID
        Misc
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        Exceptions
    - javax.accessibility
    - javax.activation
    - javax.annotation
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    - javax.sql
    - javax.swing
    - javax.tools
    - javax.xml
    - org.ietf
    - org.w3c.dom
    - org.xml
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Package java.security.*

SecureRandom, SecureRandomSpi

Package java.util.*

Random

Package java.util.concurrent.*

ThreadLocalRandom

 

Original API Documentation