Module hash4j

Package com.dynatrace.hash4j.internal

Class ArraySizeUtil

java.lang.Object

com.dynatrace.hash4j.internal.ArraySizeUtil

public final class ArraySizeUtil
extends Object

Utility class for resizing arrays.

Method Summary

Modifier and Type	Method	Description
static int	increaseArraySize(int currentSize, int requiredIndex)	Returns a new array size that is greater than the current array size and that supports the given required index.

Methods inherited from class java.lang.Object

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

Method Details

increaseArraySize

public static int increaseArraySize(int currentSize,
 int requiredIndex)

Returns a new array size that is greater than the current array size and that supports the given required index.

If possible, this function doubles the current array size.

It is guaranteed that the return value is greater than the current size. If the current size is equal to Integer.MAX_VALUE, an OutOfMemoryError exception is thrown.

This function takes care that the maximum allowed arrow size is not exceeded.

Parameters:

currentSize - current array size

requiredIndex - the index that needs to be supported/covered with the new array size

Returns:

the new array size

Throws:

OutOfMemoryError - if the current size is equal to Integer.MAX_VALUE