MemoryReductionUtil (Jenkins core 2.356 API)

java.lang.Object
- jenkins.util.MemoryReductionUtil

```
public class MemoryReductionUtil
extends Object
```
Utilities to reduce memory footprint

Author:

Sam Van Oort

Field Summary

Fields
Modifier and Type Field Description

static String[] EMPTY_STRING_ARRAY
Empty string array, exactly what it says on the tin.

Constructor Summary

Constructors
Constructor Description

MemoryReductionUtil()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static Map`	`getPresizedMutableMap(int elementCount)`	Returns a mutable HashMap presized to hold the given number of elements without needing to resize.
`static String[]`	`internInPlace(String[] input)`	Returns the input strings, but with all values interned.
`static int`	`preallocatedHashmapCapacity(int elementsToHold)`	Returns the capacity we need to allocate for a HashMap so it will hold all elements without needing to resize.

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

- Field Detail
  - EMPTY_STRING_ARRAY
```
public static final String[] EMPTY_STRING_ARRAY
```
    Empty string array, exactly what it says on the tin. Avoids repeatedly created empty array when calling "toArray."
- Constructor Detail
  - MemoryReductionUtil
```
public MemoryReductionUtil()
```
- Method Detail
  - preallocatedHashmapCapacity
```
public static int preallocatedHashmapCapacity(int elementsToHold)
```
    Returns the capacity we need to allocate for a HashMap so it will hold all elements without needing to resize.
  - getPresizedMutableMap
```
public static Map getPresizedMutableMap(int elementCount)
```
    Returns a mutable HashMap presized to hold the given number of elements without needing to resize.
  - internInPlace
```
public static String[] internInPlace(String[] input)
```
    Returns the input strings, but with all values interned.