com.bluemarsh.jswat.util
Class ThreadGroupIterator
java.lang.Object
|
+--com.bluemarsh.jswat.util.ThreadGroupIterator
- All Implemented Interfaces:
- java.util.Iterator
- public class ThreadGroupIterator
- extends java.lang.Object
- implements java.util.Iterator
Class ThreadGroupIterator has special functionality for iterating
over a list of thread group references. Since thread groups are
often assembled in trees, this iterator uses a stack to traverse
that tree in depth-first order.
- Author:
- Nathan Fiedler
Field Summary |
protected java.util.Stack |
stack
Stack of thread group iterators. |
Constructor Summary |
ThreadGroupIterator(java.util.List groups)
Constructs a new ThreadGroupIterator with an initial set
of thread group iterators. |
ThreadGroupIterator(com.sun.jdi.ThreadGroupReference group)
Constructs a new ThreadGroupIterator with an initial set
of thread groups. |
Method Summary |
boolean |
hasNext()
Returns true if there are more iterators to be examined. |
java.lang.Object |
next()
Returns the next element in the interation. |
protected java.util.Iterator |
peek()
Looks at the object at the top of this stack without removing
it from the stack. |
protected void |
push(java.util.List groups)
Push the given list of thread group iterators onto the stack. |
void |
remove()
Remove is not supported on this iterator. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
stack
protected java.util.Stack stack
- Stack of thread group iterators.
ThreadGroupIterator
public ThreadGroupIterator(java.util.List groups)
- Constructs a new ThreadGroupIterator with an initial set
of thread group iterators.
- Parameters:
groups
- ThreadGroup list.
ThreadGroupIterator
public ThreadGroupIterator(com.sun.jdi.ThreadGroupReference group)
- Constructs a new ThreadGroupIterator with an initial set
of thread groups.
- Parameters:
group
- ThreadGroup
hasNext
public boolean hasNext()
- Returns true if there are more iterators to be examined.
- Specified by:
hasNext
in interface java.util.Iterator
- Returns:
- True if there are more iterators.
next
public java.lang.Object next()
- Returns the next element in the interation.
- Specified by:
next
in interface java.util.Iterator
- Returns:
- Next object in iteration.
peek
protected java.util.Iterator peek()
- Looks at the object at the top of this stack without removing
it from the stack.
- Returns:
- First iterator on the stack, or null if none.
push
protected void push(java.util.List groups)
- Push the given list of thread group iterators onto the stack.
- Parameters:
groups
- List of ThreadGroup iterators.
remove
public void remove()
- Remove is not supported on this iterator.
- Specified by:
remove
in interface java.util.Iterator
- Throws:
UnsupportedOperationException
- Thrown always.