The characters in a string have indices that run from 0 to string.length() - 1. The method charAt() returns the character at a specified index. The boolean operator ( == ) returns true only if the two ...

Given a string, return a new string made of n copies of the first 2 chars of the original string where n is the length of the string. The string may be any length. If there are fewer than 2 chars, use ...

Though Java already has a character type and char keyword to represent and manipulate characters, the language also requires a Character class for two reasons: Character c1 = new Character ('A'); ...