Java Assertions are a debugging feature used to test assumptions in code. They are primarily used to identify and fix bugs during development by verifying that certain conditions hold true.
Key Points:
- Syntax:
javaassert condition : “Error message”; - Purpose:
- Validate assumptions during runtime.
- Typically used for testing and debugging, not for production code.
- Enable/Disable:
- Assertions are disabled by default and can be enabled with the -ea JVM option.
Example: bashjava -ea MyClass
- Assertions are disabled by default and can be enabled with the -ea JVM option.
- Examples:
javaint x = -1;
assert x >= 0 : “x must be non-negative”;
Advantages:
- Helps catch logical errors early.
- Improves code quality and reliability during development.