Java: Introduction to Strings

A string is an ordered sequence of symbols. Sting class is included in java.lang package. So each class in Java, can use String class without importing any package. The String class represents character strings. All string literals in Java programs, such as "abc", are implemented as instances of this class. 

Documentation:

http://download.oracle.com/javase/1.4.2/docs/api/java/lang/String.html

Comparing Strings:

http://www.cs.geneseo.edu/~baldwin/reference/java-strings.html