JAVA language Theory

1. VARIABLE - It can be combination of alphabets, numbers,etc, First letter of first word should be lowercase for internal words make first letter capital they should be meaningful 2. CLASS - class name should be noun for more than one word first letter should be capital 3. INTERFACE - some coding convention as that of class because they are more like class only 4. METHODS - they should be verbs first letter should be lower case for more than one word first letter should be capital for internal words 5.CONSTANTS - they should be constant and connected with _ 6. PACKAGE NAME - They should be lower case only

EDITOR -It is  used to type the program famous editors are notepad, gedit, vi editor, netbeans, etc COMPILER - it is used to check the correctness of program DEBUGGERS - It is used for step by step execution of the program. After every step we can check variable value  LIBRARIES - pre defined libraries are useful in faster software development  different languages provides various languages . Some of the famous libraries are string , stream , file, thread etc.