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java.lang.Objectorg.pentaho.reporting.libraries.base.util.FastStack
public final class FastStack
A very simple unsynchronized stack. This one is faster than the java.util-Version, which is based on the synchronized java.util.Vector class.
Constructor Summary | |
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FastStack()
Creates a new stack with an initial size and growth of 10 items. |
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FastStack(int size)
Creates a new stack with an initial size and growth as specified. |
Method Summary | |
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void |
clear()
Removes all contents from the stack. |
java.lang.Object |
clone()
Creates a shallow copy of the stack. |
java.lang.Object |
get(int index)
Returns the element from the stack at the given index-position. |
boolean |
isEmpty()
Checks whether the stack is empty. |
java.lang.Object |
peek()
Loads the top-most element from the stack, without removing it from the stack. |
java.lang.Object |
pop()
Loads the top-most element from the stack and removes it from the stack at the same time. |
void |
push(java.lang.Object o)
Pushes a new object on the stack. |
int |
size()
Returns the number of elements in the stack. |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public FastStack()
public FastStack(int size)
size
- the initial size and growth.Method Detail |
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public boolean isEmpty()
public int size()
public void push(java.lang.Object o)
o
- the object, maybe null.public java.lang.Object peek()
java.util.EmptyStackException
- if the stack is empty.public java.lang.Object pop()
java.util.EmptyStackException
- if the stack is empty.public java.lang.Object clone()
clone
in class java.lang.Object
public void clear()
public java.lang.Object get(int index)
index
- the element's index.
java.lang.IndexOutOfBoundsException
- if the index given is greater than the number of objects in the stack.
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