Abstract Classes

// Usage public class Main { public static void main(String[] args) { AbstractClassesExample example = new AbstractClassesExample("sample"); example.process(); } }

class AbstractClassesExample: def __init__(self, data): self.data = data

def process(self): print(f"Processing: {self.data}")

def get_data(self): return self.data

example = AbstractClassesExample("sample") example.process()

class AbstractClassesExample { private: std::string data; public: AbstractClassesExample(const std::string& d) : data(d) {}

void process() { std::cout << "Processing: " << data << std::endl; }

std::string getData() const { return data; } };

// Usage int main() { AbstractClassesExample example("sample"); example.process(); return 0; }

// Good: Clear initialization public class Example { private String field1; private int field2;

public Example(String f1, int f2) { this.field1 = f1; this.field2 = f2; } }

public void process(String input) throws IllegalArgumentException { if (input == null || input.isEmpty()) { throw new IllegalArgumentException("Invalid input"); } // Process }

try (Resource resource = new Resource()) { resource.use(); } // Automatically closed

@Test public void testBasicFunctionality() { // Arrange Example obj = new Example("data");

// Act String result = obj.process();

// Assert assertEquals("expected", result); }

@Test public void testEdgeCases() { // Test boundary conditions }

@Test public void testErrorHandling() { // Test exception scenarios }