What is the difference between String and StringBuffer classes? Why Java Team introduce StringBuffer? We already know, String class objects are immutable in nature and hence their contents cannot be ...

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 ...

The documentation contains the following recommendations: Don't use string objects for string literals that are frequently changed. This causes performance issues as several string objects are created ...