Modifier and Type	Method and Description
boolean	[**empty**](https://docs.oracle.com/javase/8/docs/api/java/util/Stack.html#empty--)()Tests if this stack is empty.
E	[**peek**](https://docs.oracle.com/javase/8/docs/api/java/util/Stack.html#peek--)()Looks at the object at the top of this stack without removing it from the stack.
E	[**pop**](https://docs.oracle.com/javase/8/docs/api/java/util/Stack.html#pop--)()Removes the object at the top of this stack and returns that object as the value of this function.
E	[**push**](https://docs.oracle.com/javase/8/docs/api/java/util/Stack.html#push-E-)([**E**](https://docs.oracle.com/javase/8/docs/api/java/util/Stack.html) item)Pushes an item onto the top of this stack.
int	[**search**](https://docs.oracle.com/javase/8/docs/api/java/util/Stack.html#search-java.lang.Object-)([**Object**](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html) o)Returns the 1-based position where an object is on this stack.