Module openj9.dtfj

Class IntegerMap

java.lang.Object
com.ibm.dtfj.corereaders.zos.util.AbstractHashMap
com.ibm.dtfj.corereaders.zos.util.IntegerMap
All Implemented Interfaces:
Serializable

public final class IntegerMap extends AbstractHashMap
This is a simple class to map one integer to another but without the overhead of using a Hashtable. There is one limitation at present which is that the value of -1 can't be used since this is currently used to indicate value not found.
See Also:
  • Constructor Details

    • IntegerMap

      public IntegerMap()
  • Method Details

    • get

      public long get(long key)
      Returns the value mapped by the given key.
      Returns:
      the value or -1 if it cannot be found
    • put

      public void put(long key, long value)
      Add the key/value pair to the map. The value must not be -1.
    • remove

      public long remove(long key)
      Remove the key from the map and return the old value.
    • memoryUsage

      public int memoryUsage()
    • main

      public static void main(String[] args)
      Run some basic tests on this class.