Introduction
The java.lang.ThreadGroup class represents a set of threads. It can also include other thread groups. The thread groups form a tree in which every thread group except the initial thread group has a parent.Class declaration
Following is the declaration for java.lang.ThreadGroup class:public class ThreadGroup extends Object implements Thread.UncaughtExceptionHandler
Class constructors
S.N. | Constructor & Description |
---|---|
1 |
ThreadGroup(String name) This constructs a new thread group. |
2 |
ThreadGroup(ThreadGroup parent, String name) This creates a new thread group. |
Class methods
S.N. | Method & Description |
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1 |
int activeCount() This method returns an estimate of the number of active threads in this thread group. |
2 |
int activeGroupCount() This method returns an estimate of the number of active groups in this thread group. |
3 |
void checkAccess() This method determines if the currently running thread has permission to modify this thread group. |
4 |
void destroy() This method Destroys this thread group and all of its subgroups. |
5 |
int enumerate(Thread[] list) This method Copies into the specified array every active thread in this thread group and its subgroups. |
6 |
int enumerate(Thread[] list, boolean recurse) This method copies into the specified array every active thread in this thread group. |
7 |
int enumerate(ThreadGroup[] list) This method copies into the specified array references to every active subgroup in this thread group. |
8 |
int enumerate(ThreadGroup[] list, boolean recurse) This method copies into the specified array references to every active subgroup in this thread group. |
9 |
int getMaxPriority() This method returns the maximum priority of this thread group. |
10 |
String getName() This method returns the name of this thread group. |
11 |
ThreadGroup getParent() This method returns the parent of this thread group. |
12 |
void interrupt() This method interrupts all threads in this thread group. |
13 |
boolean isDaemon() This method Tests if this thread group is a daemon thread group. |
14 |
boolean isDestroyed() This method tests if this thread group has been destroyed. |
15 |
void list() This method prints information about this thread group to the standard output. |
16 |
boolean parentOf(ThreadGroup g) This method tests if this thread group is either the thread group argument or one of its ancestor thread groups. |
17 |
void setDaemon(boolean daemon) This method changes the daemon status of this thread group. |
18 |
void setMaxPriority(int pri) This method sets the maximum priority of the group. |
19 |
String toString() This method returns a string representation of this Thread group. |
20 |
void uncaughtException(Thread t, Throwable e) This method called by the Java Virtual Machine when a thread in this thread group stops because of an uncaught exception, and the thread does not have a specific Thread.UncaughtExceptionHandler installed. |
Methods inherited
This class inherits methods from the following classes:- java.lang.Object
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