Core Java

What the function of charAt(int index) method of StringBuilder class in java?

This is used to return the character at the specified position.

What the function of ensureCapacity(int minimumCapacity) method of StringBuilder class in java?

What the function of capacity() method of StringBuilder class in java?

What the function of reverse() method of StringBuilder class in java?

What the function of delete(int startIndex, int endIndex) method of StringBuilder class in java?

What the function of replace(int startIndex, int endIndex, String str) method of StringBuilder class in java?