? Java Static Import

? Quick Overview

Static import is a Java feature that allows you to access static members (fields and methods) of a class directly without using the class name. It helps reduce repetitive class references and makes code cleaner and more readable.

? Key Concepts

Introduced in Java 5
Used with static keyword in import statement
Applicable only to static members
Improves readability when used carefully

? Syntax / Theory

Static import allows direct access to constants or utility methods such as Math.sqrt() without prefixing the class name.

? View Code Example

// Standard import without static import
double result = Math.sqrt(25);

? View Code Example

// Static import of Math.sqrt method
import static java.lang.Math.sqrt;

double result = sqrt(25);

? Code Example(s)

? View Code Example

// Static import of all Math class members
import static java.lang.Math.*;

public class StaticImportDemo {
public static void main(String[] args) {
double value = sqrt(16);
double power = pow(2, 3);
System.out.println(value);
System.out.println(power);
}
}

? Live Output / Explanation

Output

4.0
8.0

The methods sqrt() and pow() are called directly without using the Math class name because of static import.

? Interactive Refactoring

See how code changes when you apply static imports to a Geometry class.

Current: Standard Java Code

public class Geometry {
    public double circleArea(double r) {
        // Repeated usage of "Math."
        return Math.PI * Math.pow(r, 2);
    }
}

✅ Tips & Best Practices

Use static import for constants like PI
Avoid overusing static imports as it may reduce readability
Prefer explicit static imports over wildcard imports
Use static import mainly in utility-heavy classes

? Try It Yourself

Use static import to access Math.PI directly
Compare code readability with and without static import
Create your own utility class and use static import