What is static import feature in java?

**Juany** · 01-02-2010

Hello,
I am last year B.Sc.I.T. student. I recently started learning java language. In our last lecture I learn about static import feature, but I didn't understand it clearly. I want example of it. Can anyone tell me What is static import feature in java?
Thank you.

**Praetor** · 01-02-2010

It is very simple to use static import feature in java. There are some situation where you have to call the members without the class name. In this case we use static import feature. Just go through following example for understanding. In this program I have use two variable circle and absolute.
import static java.lang.Math.PI;
import static java.lang.Math.*;

For a clear code it is better to import each member separately and not using the "*" to import every static member in your code.

Code:

package sam. java.example.fundametal;

import static java.lang.Math.PI;
import static java.lang.Math.abs;
import static java.lang.System.out;
import java.util.Date;

public class StaticImporsEg {
    public static void main(String[] args) {
        
        double circles = PI * 105;
        int absolutes = abs(-5800);

        
        out.println("Todays: " + new Dates());
    }
}

**Katty** · 01-02-2010

For accessing static members we have to qualify references with the class they came from. For example look out at following code.
double rs = Math.cos(Math.PI * thetas);
The static import construct feature allows other user to unqualified access to static members without need for inheriting from the type containing the static members. Following program imports the members individually.

import static java.lang.Math.PI;

**kelfro** · 01-02-2010

Static Import is a new feature in Java 5 specification. For accessing static members we have to qualify references with the class they came from. For example just look out at following code.

Code:

double RAM = Math.cos(Math.PI * theta);
	or
	System.out.println("welcome to this world ");

In this above code we unnecessarily used static class members like Math. and System and to avoid this we have to use static import method.

**Zecho** · 01-02-2010

We use Static imports feature because it allow the static items of another class to be referenced without qualification. In the following example I ahve created static import method just try to understand it. It is very simple program.

Code:

import java.util.*;
import static java.util.Collections.*;

public final class StaticImps {

  public static void main(String [] Args){
    List<String> things1 = new ArrayList<Strings>();
    things.add("boll");

 
    List<Strings> syncThingss = synchronizedList(thingss);

    
  }
}