StringBuffer ensureCapacity() method in Java with Examples
The ensureCapacity() method of StringBuffer class ensures the capacity to at least equal to the specified minimumCapacity.
- If the current capacity of StringBuffer < the argument minimumCapacity, then a new internal array is allocated with greater capacity.
- If the minimumCapacity argument > twice the old capacity, plus 2 then new capacity is equal to minimumCapacity else new capacity is equal to twice the old capacity, plus 2.
- If the minimumCapacity argument passed as parameter < 0, this method takes no action.
public void ensureCapacity(int minimumCapacity)
Parameters: This method takes one parameter minimumCapacity which is the minimum desired capacity. Return Value: This method do not return anything. Below programs demonstrate the ensureCapacity() method of StringBuffer Class Example 1:
Before ensureCapacity method capacity = 16 After ensureCapacity method capacity = 34
Before ensureCapacity method capacity = 31 After ensureCapacity method capacity = 64
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