2. DEFINITION Java IDE created by Xinox Software JCreator is a powerful interactive development environment (IDE) for Java technologies. A Java compiler

3. TOKENS characters that are grouped into symbols

4. DIFFERENT TYPES OF TOKEN

5. SYNTAX characters and symbols and their structure used to code the class using Unicode characters.

6. IDENTIFIERS non keywords primarily they are used as names

7. LEGALILLEGAL 1.The first character of the identifier should start either with a letter, a currency character ( $ ), or a connecting character like underscore( _ ). 2.The first character maybe followed by either or a combination of letters, currency characters, connection characters, or numbers. 3.There is no limit of how many characters an identifier can contain. However, it's essentially recommended to use a short character identifier yet readable and understandable. 1.Identifiers that starts with a number. 2.Using Java keywords as an identifier is illegal. In other words, you can't use a Java keyword as an identifier Note: More importantly, keep in mind that Java Identifier are case sensitive. Thereby, NAME and name are two different identifiers.

8. Here are some hint on how to formulate identifier name: Classes & Interface - The first letter should be capitalized. If the desired name is composed of several words, the first letter of the inner word should be capitalized (camelCase). For example: Chair, InformationDepartment and HeadOffice. Methods - The first letter should be lowecase, and then camelCase rules should be applied. Also, take note that in method names should be verb-noun pairs. For example: getTotal, setContactNumber and buyCellphone.

9. Here are some hint on how to formulate Identifier name: Variables - same rules apply on letter case with methods. However, it should idially be a short and meaningful. For example: firstName, currentLocation and totalPrice. Constants - Java constants should be named using uppercase letters with underscore characters as separator. Take note that constants are created by marking variables as static and final. For example: PERSON_LABEL, HELLO_MESSAGE and GREETING.

10. LITERALS represent numbers A constant value which can be assigned to a variable E.g: int x=10, int x=010 STRING LITERALS of zero or more characters embedded in double quotes E.g: String s=” laxman scjp”;

11. OPERATORS + and = are used to express basic computation such as addition or String concatenation or assignment.

12. BLOCKS left and right braces ({ and }) body of a class

13. WHITESPACE such as spaces, tabs, and newlines separate tokens

14. COMMENTS /* text */ The compiler ignores everything from /* to */. /** documentation */ This indicates a documentation comment (doc comment, for short). // text The compiler ignores everything from // to the end of the line.