Language Fundamentals 1. Identifiers 2. Reserve words 3. data types 4. Literals 5. Arrays 6. Types of variables 7. var-args method 8. main method 9. command line arguments 10. java coding standard -------------------- 1. Identifiers a name in java program is called identifiers, which can be used for identification purpose it can be method name, class name, variable name or label name. class Test#1# { public static void main#2#(String#3# ar#4#[]) { int x#5#=10; } } in this how many identifiers are there??? Rules for defining java identifiers 1. the only allowed character in java identifiers are ---> a to z, A to Z, 0 to 9, $ and _ if we are using any other character we will get compile time error. example total_number valid total# invalid 2.identifiers cant starts with digit total123 valid , 123total invalid java identifiers are case sensitive offcourse java language itself considered as case sensitive pro...