1. Introduction to Java Language
Large Project Features
Sophisticated functionality
Large code libraries
Large team & employee turnover
Different roles of team members
Long life cycle
Project Docs
Work with Code
Code Quality
Code Convensions
Declarations
Class Declarations
Statements
Compound Statements
Naming Conventions
How to Study Code Conventions
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Category: programmingprogramming

1. Introduction to Java Language. 3. Large Project Specific

1. 1. Introduction to Java Language

3. Large Project Specific

2. Large Project Features


Sophisticated functionality
Large code libraries
Large team & employee turnover
Different roles of team members
Long life cycle
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3. Sophisticated functionality

• Several hundreds or even thousands
application’s functions
• Large user manual
• Sometimes sophisticated algorithms
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4. Large code libraries

• An application contains 20 – 100 class
libraries
• A class library consists of 20 – 70 classes
• A class contains 200 – 2000 code lines
• So, application’s code =
100 000 – 20 000 000 code lines
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5. Large team & employee turnover

Large team & employee turnover
• Several sub teams in different cities and/or
countries
• 5-15 (up to 50-70) developers in each sub
team
• 10-20% of natural turnover in a team
• Step by step shifting of responsibilities to
Ukraine
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6. Different roles of team members


Developers + team leader
Architects, algorithm designers
Testers
Business analysts
Technical writers
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7. Long life cycle

• 5-20 years of development
• 5 – 15 application versions (usually
containing sub versions and modifications)
• Real examples:
– Project 1 - 1996 – 2007
– Project 2 - 2001 – 2010
– Project 3 - 1989 – till now
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8. Project Docs

• User manual
• Program source code
That’s All!
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9. Work with Code


Creation
Maintenance (80% of lifecycle)
Review
Bug Fixing
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10. Code Quality

• Low code quality increases losses in
interactions between team members
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11. Code Convensions

• Code should be well documented and
standardized
• Code should be as simple as possible
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12. Declarations

• One declaration per line is recommended
since it encourages commenting
• Put declarations only at the beginning of
blocks
• Try to initialize local variables where
they’re declared.
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13. Class Declarations

• No space between a method name and the
parenthesis
• Open brace “{” appears at the end of the same
line as the declaration statement
• Closing brace “}” starts a line by itself indented
to match its corresponding opening statement,
except when it is a null statement the “}” should
appear immediately after the “{“
• Methods are separated by a blank line
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14. Statements

• Each line should contain at most one
statement.
• A while statement should have the
following form:
while (condition) {
statements;
}
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15. Compound Statements

• The enclosed statements should be
indented one more level than the
compound statement
• The opening brace should be at the end of
the line that begins the compound
statement; the closing brace should begin
a line and be indented to the beginning of
the compound statement
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16. Naming Conventions

• Class names should be nouns, in mixed
case with the first letter of each internal
word capitalized.
• Methods should be verbs, in mixed case
with the first letter lowercase, with the rst
letter of each internal word capitalized.
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17. How to Study Code Conventions

• Step by step studying
• Wide use code review
• Use possibilities of IDE text editor
– You can use Eclipse to format code accordingly
the conventions: right click in the text editor and
select Source > Format menu item.
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