IntegerMap (OpenJ9 JDK 11)

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:

Serialized Form

Constructor Summary

Constructors
Constructor Description

IntegerMap()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`long`	`get(long key)`	Returns the value mapped by the given key.
`static void`	`main(String[] args)`	Run some basic tests on this class.
`int`	`memoryUsage()`
`void`	`put(long key, long value)`	Add the key/value pair to the map.
`long`	`remove(long key)`	Remove the key from the map and return the old value.

Methods declared in class com.ibm.dtfj.corereaders.zos.util.AbstractHashMap
getKeys, getKeysArray

Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - IntegerMap
```
public IntegerMap()
```
- Method Detail
  - 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.