Package util

Class HistoryManager

java.lang.Object
util.HistoryManager
public class HistoryManager
extends java.lang.Object

  • Field Summary

    Fields 
    Modifier and Type Field Description
    static java.util.Stack<java.lang.String> downStack  
    static java.util.Stack<java.lang.String> upStack  

  • Constructor Summary

    Constructors 
    Constructor Description
    HistoryManager()  

  • Method Summary

    Modifier and Type Method Description
    void clearHistory()  
    java.lang.String getNext​(java.lang.String currDisplayingInput)  
    java.lang.String getPrevious​(java.lang.String currDisplayingInput)  
    void recordHistory​(java.lang.String expr)  

    Methods inherited from class java.lang.Object

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

  • Field Details

    • upStack

      public static java.util.Stack<java.lang.String> upStack

    • downStack

      public static java.util.Stack<java.lang.String> downStack

  • Constructor Details

  • Method Details

    • recordHistory

      public void recordHistory​(java.lang.String expr)

    • getNext

      public java.lang.String getNext​(java.lang.String currDisplayingInput)

    • getPrevious

      public java.lang.String getPrevious​(java.lang.String currDisplayingInput)

    • clearHistory

      public void clearHistory()