Package org.h2.util

Class ByteStack

  • public final class ByteStack
extends java.lang.Object
    The stack of byte values. This class is not synchronized and should not be used by multiple threads concurrently.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private byte[] array  
      private static int MAX_ARRAY_SIZE  
      private int size  

    • Constructor Summary

      Constructors 
      Constructor Description
      ByteStack()
      Creates a new empty instance.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      private void grow​(int length)  
      boolean isEmpty()
      Returns true if this stack is empty.
      int peek​(int defaultValue)
      Looks at the item at the top of this stack without removing it.
      int poll​(int defaultValue)
      Removes the item at the top of this stack and returns that item.
      byte pop()
      Removes the item at the top of this stack and returns that item.
      void push​(byte item)
      Pushes an item onto the top of this stack.
      int size()
      Returns the number of items in this stack.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • size

        private int size

      • array

        private byte[] array

    • Constructor Detail

      • ByteStack

        public ByteStack()
        Creates a new empty instance.

    • Method Detail

      • push

        public void push​(byte item)
        Pushes an item onto the top of this stack.
        Parameters:
        item - the item to push

      • pop

        public byte pop()
        Removes the item at the top of this stack and returns that item.
        Returns:
        the item at the top of this stack
        Throws:
        java.util.NoSuchElementException - if stack is empty

      • poll

        public int poll​(int defaultValue)
        Removes the item at the top of this stack and returns that item.
        Parameters:
        defaultValue - value to return if stack is empty
        Returns:
        the item at the top of this stack, or default value

      • peek

        public int peek​(int defaultValue)
        Looks at the item at the top of this stack without removing it.
        Parameters:
        defaultValue - value to return if stack is empty
        Returns:
        the item at the top of this stack, or default value

      • isEmpty

        public boolean isEmpty()
        Returns true if this stack is empty.
        Returns:
        true if this stack is empty

      • size

        public int size()
        Returns the number of items in this stack.
        Returns:
        the number of items in this stack

      • grow

        private void grow​(int length)