| Abstract Classes | Number of abstract classes and interfaces. | 
 
                        			 
                         
                           				
                           | Abstract Methods | Number of abstract methods. | 
 
                        			 
                         
                           				
                           | Abstractness | Ratio of Number of Abstract Classes (and interfaces) in the analyzed package to the total number of classes in the analyzed
                              package. | 
 
                        			 
                         
                           				
                           | Afferent Coupling | Number of classes outside the package that depend on classes inside the package. An indicator of the package’s responsibility. | 
 
                        			 
                         
                           				
                           | Average Absolute Complexity | Average Absolute Complexity of methods. | 
 
                        			 
                         
                           				
                           | Average Binary Decisions | Average Binary Decisions of methods. | 
 
                        			 
                         
                           				
                           | Average Catch Clauses | Average Catch Clauses in methods. | 
 
                        			 
                         
                           				
                           | Average Computational Statements | Average Computational Statements of methods. | 
 
                        			 
                         
                           				
                           | Average Conditional Complexity | Average Conditional Complexity of methods. | 
 
                        			 
                         
                           				
                           | Average Cyclomatic Complexity | Average Cyclomatic Complexity of methods. | 
 
                        			 
                         
                           				
                           | Average Depth of Inheritance Hierarchy | Average Depth of Inheritance Hierarchy of classes and interfaces. | 
 
                        			 
                         
                           				
                           | Average Essential Complexity | Average Essential Complexity of methods. | 
 
                        			 
                         
                           				
                           | Average Extended Cyclomatic Complexity | Average Extended Cyclomatic Complexity of methods. | 
 
                        			 
                         
                           				
                           | Average IF Statements | Average IF Statements in methods. | 
 
                        			 
                         
                           				
                           | Average Lack of Cohesion Per Type | Average Lack of Cohesion of classes and interfaces. | 
 
                        			 
                         
                           				
                           | Average Loop Statements | Average Loop Statements in methods. | 
 
                        			 
                         
                           				
                           | Average Maximum Switch Cases | Average Maximum Switch Cases in methods. | 
 
                        			 
                         
                           				
                           | Average Nested Block Depth | Average Nested Block Depth of methods. | 
 
                        			 
                         
                           				
                           | Average Parameters | Average Parameters in methods. | 
 
                        			 
                         
                           				
                           | Average Specialization Index Per Type | Average Specialization Index of classes and interfaces. | 
 
                        			 
                         
                           				
                           | Average Subtypes | Average Subtypes in methods. | 
 
                        			 
                         
                           				
                           | Average Switch Cases | Average Switch Cases in methods. | 
 
                        			 
                         
                           				
                           | Average Switch Statements | Average Switch Statements in methods. | 
 
                        			 
                         
                           				
                           | Average Unique Method Calls | Average Unique Method Calls in methods. | 
 
                        			 
                         
                           				
                           | Blank Lines | Number of blank lines of source (sequence number area content is ignored). | 
 
                        			 
                         
                           				
                           | Comments Ratio | Number of Comments divided by Lines of Code. | 
 
                        			 
                         
                           				
                           | Constructors | Number of constructors. | 
 
                        			 
                         
                           				
                           | Efferent Coupling | Number of classes inside the package that depend on classes outside the package. An indicator of the package’s independence. | 
 
                        			 
                         
                           				
                           | Error Estimate | B = E**(2/3) / 3000, where E is Programming Effort. | 
 
                        			 
                         
                           				
                           | Executable Statements | All assignments, function calls (alone on a line), calls, returns, IF, DO, FOR, CHOOSE, EXIT, CONTINUE, and GOTO statements. | 
 
                        			 
                         
                           				
                           | Fields | Number of fields. | 
 
                        			 
                         
                           				
                           | Function Points | Lines of Code divided by K, where K depends on the language: Cobol=77, Natural=52, PL/I=67. Estimate of the number of end-user
                              business functions implemented by the program. | 
 
                        			 
                         
                           				
                           | Import Statements | Number of import statements. | 
 
                        			 
                         
                           				
                           | Include Statements | Number of include statements. | 
 
                        			 
                         
                           				
                           | Instability | Ratio of Efferent Coupling (Ce) to total coupling (Ce + Ca), such that I = Ce / (Ce + Ca). An indicator of the package’s resilience
                              to change. | 
 
                        			 
                         
                           				
                           | Intelligent Content | I = L * V, where L is Program Level and V is Program Volume. Complexity of a given algorithm independent of the language used
                              to express the algorithm. | 
 
                        			 
                         
                           				
                           | Interfaces | Number of interfaces. | 
 
                        			 
                         
                           				
                           | Lines of Code | Number of lines of code, plus the number of lines of code in included files and any files they include. Comments and blank
                              lines are not counted. | 
 
                        			 
                         
                           				
                           | Lines with Comments | Number of lines of source containing comments, including inline comments placed on lines with statements. | 
 
                        			 
                         
                           				
                           | Logical Operators in Conditions | Number of binary logical operators used in conditions. | 
 
                        			 
                         
                           				
                           | Maintainability Index | MI = 171 - 5.2 * ln (PgmVolume) - 0.23 * ExtCycComp - 16.2 * ln (LOC) + 50 * sin (sqrt (2.46 * CommentLines/SourceLines)),
                              where PgmVolume is Program Volume, ExtCycComp is Extended Cyclomatic Complexity, LOC is Lines of Code, CommentLines is Comment
                              Lines, and SourceLines is Source Lines. | 
 
                        			 
                         
                           				
                           | Methods | Number of methods. | 
 
                        			 
                         
                           				
                           | Normalized Distance | |A + I - 1|, where A is the ratio of abstract types to all types defined in the package and I is Instability. An indicator
                              of the package’s balance between abstractness and stability. | 
 
                        			 
                         
                           				
                           | Number of Comments | Number of lines of source containing comments, including inline comments placed on lines with statements. | 
 
                        			 
                         
                           				
                           | Operands | Number of operand occurrences (N2). Operands are variables and literals used in operators. Compare Unique Operands. | 
 
                        			 
                         
                           				
                           | Operators | Number of operator occurrences (N1). Operators are executable statements and unary and binary operations. Compare Unique Operators. | 
 
                        			 
                         
                           				
                           | Overridden Methods | Number of overridden methods. | 
 
                        			 
                         
                           				
                           | Program Length | N = N1 + N2, where N1 is Operators and N2 is Operands. | 
 
                        			 
                         
                           				
                           | Program Level | L = 1 / D, where D is Difficulty. | 
 
                        			 
                         
                           				
                           | Program Volume | V = N * log2(n), where N is Program Length and n is Vocabulary. Minimum number of bits required to code the program. | 
 
                        			 
                         
                           				
                           | Programming Effort | E = V / L, where V is Program Volume and L is Program Level. Estimated mental effort required to develop the program. | 
 
                        			 
                         
                           				
                           | Programming Time | T = E / 18, where E is the Programming Effort and 18 is Stroud’s Number. Estimated amount of time required to implement the
                              algorithm, in seconds. | 
 
                        			 
                         
                           				
                           | Response for Class | Response for class. | 
 
                        			 
                         
                           				
                           | Source Lines | Number of lines of source. | 
 
                        			 
                         
                           				
                           | Static Fields | Number of static fields. | 
 
                        			 
                         
                           				
                           | Static Methods | Number of static methods. | 
 
                        			 
                         
                           				
                           | Unique Operands | Number of distinct operands (n2). Operands are variables and literals used in operators. Uniqueness of literals is determined
                              by their notation. Compare Operands. | 
 
                        			 
                         
                           				
                           | Unique Operands in Conditions | Number of distinct operands used in conditions. | 
 
                        			 
                         
                           				
                           | Unique Operators | Number of distinct operators (n1). Operators are executable statements and unary and binary operations. Compare Operators. | 
 
                        			 
                         
                           				
                           | Vocabulary | n = n1 + n2, where n1 is the number of Unique Operators and n2 is the number of Unique Operands. | 
 
                        			 
                         
                           				
                           | Weighted Methods | Number of weighted methods. |