A question in book <The Java Tutorial>:
Question 1: What is the initial capacity of the following string buffer?
StringBuffer sb = new StringBuffer("Able was I ere I saw Elba.");
Answer 1: It's the length of the initial string + 16: 26 + 16 = 42.
Why the result is plus 16?
Good question. I have no idea why they choose to add 16 to the size of the string seems kinda random but I bet there is some good reason for it. Anyway, it is documented as such in the J2SE Javadoc. Here is the relevant quote:
public StringBuffer(String str)
Constructs a string buffer so that it represents the same sequence of characters as the string argument; in other words, the initial contents of the string buffer is a copy of the argument string. The initial capacity of the string buffer is 16 plus the length of the string argument.
Anyone know how they got 16?
