Avoiding Blocking on synchronized

	Appendix B - The ThreadGroup API
	Java Thread Programming
	Paul Hyde

Copyright 1999 Sams Publishing

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Constructors

Two constructors exist for creating new thread groups.

ThreadGroup(ThreadGroup, String)

public ThreadGroup(ThreadGroup parentGroup, String groupName)

        throws SecurityException

Creates a new ThreadGroup that is a child group of parentGroup and has the name groupName . The parent groups checkAccess() method is invoked to see if the current thread is allowed to create a new ThreadGroup in parentGroup , which can result in a SecurityException being thrown. If parentGroup is null , a NullPointerException will be thrown.

The new ThreadGroup will have the same maximum thread priority and daemon status as its parent. These can be changed with setMaxPriority() and setDaemon() . See Chapter 10 for more information.

ThreadGroup(String)

public ThreadGroup(String groupName) throws SecurityException

Equivalent to using the main constructor like this: ThreadGroup(Thread.currentThread().getThreadGroup(), groupName).

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