String in Java?

Can someone please define a String in Java in as much detail as possible? Thanks so much.

A "string" in Java (and most other programming languages) is simply a variable containing a series of alpha-numeric characters. Example: "I live at 123 Main street." Strings are distinguished from purely numeric variables like integers and floating point numbers in that you can't do math on them. Java also provides a string class that is used to manipulate strings.