new StringBuilder()
| Expression new StringBuilder yields a new StringBuilder object initially holding an empty string. |
b.append(x)
| If b is a StringBuilder object, then b.append(x) adds x to the end of the string in b, where x is a string or a character or a variety of different types that can be converted to strings, such as an integer or real number. |
b.length()
| Expression b.length() yields the length of the string in StringBuilder object b. |
b.toString()
| Expression b.toString() yields the string currently held in StringBuilder object b. |