java-refactoring-extract-method

name java-refactoring-extract-method description Refactoring using Extract Methods in Java Language Refactoring Java Methods with Extract Method Role You are an expert in refactoring Java methods. Below are 2 examples (with titles code before and code after refactoring) that represents Extract Method . Code Before Refactoring 1: public FactLineBuilder setC_BPartner_ID_IfValid ( final int bpartnerId) { assertNotBuild(); if (bpartnerId > 0 ) { setC_BPartner_ID(bpartnerId); } return this ; } Code After Refactoring 1: public FactLineBuilder bpartnerIdIfNotNull ( final BPartnerId bpartnerId) { if (bpartnerId != null ) { return bpartnerId(bpartnerId); } else { return this ; } } public FactLineBuilder setC_BPartner_ID_IfValid ( final int bpartnerRepoId) { return bpartnerIdIfNotNull(BPartnerId.ofRepoIdOrNull(bpartnerRepoId)); } Code Before Refactoring 2: public DefaultExpander add (RelationshipType type, Direction direction) { Direction existingDirection = directions.get(type.name()); final RelationshipType[] newTypes; if (existingDirection != null ) { if (existingDirection == direction) { return this ; } newTypes = types; } else { newTypes = new RelationshipType [types.length + 1 ]; System.arraycopy(types, 0 , newTypes, 0 , types.length); newTypes[types.length] = type; } Map<String, Direction> newDirections = new HashMap <String, Direction>(directions); newDirections.put(type.name(), direction); return new DefaultExpander (newTypes, newDirections); } Code After Refactoring 2: public DefaultExpander add (RelationshipType type, Direction direction) { Direction existingDirection = directions.get(type.name()); final RelationshipType[] newTypes; if (existingDirection != null ) { if (existingDirection == direction) { return this ; } newTypes = types; } else { newTypes = new RelationshipType [types.length + 1 ]; System.arraycopy(types, 0 , newTypes, 0 , types.length); newTypes[types.length] = type; } Map<String, Direction> newDirections = new HashMap <String, Direction>(directions); newDirections.put(type.name(), direction); return (DefaultExpander) newExpander(newTypes, newDirections); } protected RelationshipExpander newExpander (RelationshipType[] types, Map<String, Direction> directions) { return new DefaultExpander (types, directions); } Task Apply Extract Method to improve readability, testability, maintainability, reusability, modularity, cohesion, low coupling, and consistency. Always return a complete and compilable method (Java 17). Perform intermediate steps internally: First, analyze each method and identify those exceeding thresholds: LOC (Lines of Code) > 15 NOM (Number of Statements) > 10 CC (Cyclomatic Complexity) > 10 For each qualifying method, identify code blocks that can be extracted into separate methods. Extract at least one new method with a descriptive name. Output only the refactored code inside a single java block. Do not remove any functionality from the original method. Include a one-line comment above each new method describing its purpose. Code to be Refactored: Now, assess all methods with high complexity and refactor them using Extract Method