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Protocol for stacks.
Method Summary | |
boolean |
isEmpty()
Test if the stack is logically empty. |
void |
makeEmpty()
Make the stack logically empty. |
void |
pop()
Remove the most recently inserted item from the stack. |
void |
push(java.lang.Object x)
Insert a new item into the stack. |
java.lang.Object |
top()
Get the most recently inserted item in the stack. |
java.lang.Object |
topAndPop()
Return and remove the most recently inserted item from the stack. |
Method Detail |
public void push(java.lang.Object x)
x
- the item to insert.public void pop()
UnderflowException
- if the stack is empty.public java.lang.Object top()
UnderflowException
- if the stack is empty.public java.lang.Object topAndPop()
UnderflowException
- if the stack is empty.public boolean isEmpty()
public void makeEmpty()
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