n variable variable scope naming threads 2nd 3rd 4th 5th 6th variables case-sensitivity restrictions 2nd NCP (Network Control Protocol) nested loops 2nd 3rd 4th 5th Network Access layer (TCP/IP model) 2nd 3rd 4th Network Access layer (TCP/IP) Network Control Protocol (NCP) new instance classes new keyword general form of new line character (\#092n) TextArea class newInstance() method 2nd 3rd newline character (\#092n) JTextArea class newSAXParser() method 2nd newTransformer() methods 2nd next() method Iterator class nextElement() method nextToken() method NodeList interface methods, list of 2nd NOT (~) operator not equal operator (!=) null value arrays numeric variable numeric variables conversion between 2nd 3rd 4th 5th conversion through 2nd 3rd 4th