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Static analysis


Can explain static analysis

Static analysis: Static analysis is the analysis of code without actually executing the code.

Static analysis of code can find useful information such as unused variables, unhandled exceptions, style errors, and statistics. Most modern IDEs come with some inbuilt static analysis capabilities. For example, an IDE can highlight unused variables as you type the code into the editor.

The term static in static analysis refers to the fact that the code is analyzed without executing the code. In contrast, dynamic analysis requires the code to be executed to gather additional information about the code e.g., performance characteristics.

Higher-end static analysis tools (static analyzers) can perform more complex analysis such as locating potential bugs, memory leaks, inefficient code structures, etc.

Some example static analyzers for Java: CheckStyle, PMD, FindBugs

Linters are a subset of static analyzers that specifically aim to locate areas where the code can be made 'cleaner'.