Java StringBuffer ensureCapacity(int minimumCapacity) Method: A Detailed Explanation | Java Tutorial

In Java, the `ensureCapacity(int minimumCapacity)` method in StringBuffer is used to ensure that the StringBuffer can accommodate a minimum number of characters without having to increase its capacity during the operation.

This method increases the capacity of the StringBuffer if it is less than the specified minimum capacity. If the current capacity is greater than or equal to the specified minimum capacity, the capacity remains unchanged.

Here's a detailed breakdown of this method:

- **Parameters**:
- `minimumCapacity`: An integer representing the minimum capacity required.

- **Return Type**:
- `void`: This method does not return anything.

- **Functionality**:
- If the current capacity of the StringBuffer is less than the specified minimum capacity, this method increases the capacity to ensure it can hold at least `minimumCapacity` characters.

- **Use Cases**:
- It's useful when you know beforehand that you're going to append a large number of characters to a StringBuffer, and you want to minimize the number of reallocations.

- **Example**:
```java
StringBuffer sb = new StringBuffer("Hello");
```

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Feel free to explore the other Java StringBuffer methods and concepts explained in our Java Tutorial series for a comprehensive understanding of Java programming.

Java StringBuffer [ensureCapacity(int minimumCapacity) method] | Java Tutorial

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