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Using static import, can I import the static members of classes in Java that I create?

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Using static import, can I import the static members of classes in Java that I create?
posted Jan 27, 2016 by Danial Rotwaski

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Yes,
you can use static import to import the static members of classes and interfaces you create. Doing so is especially convenient when you define several static members that are used frequently throughout a large program.
For example, if a class defines a number of static final constants that define various limits, then using static import to bring them into view will save you a lot of tedious typing.

1 Answer

+1 vote

Description:

In general, any class from same package can be called without importing it. Incase, if the class is not part of the same package, we need to provide the import statement to access the class. We can access any static fields or methods with reference to the class name. Here comes the use of static imports. Static imports allow us to import all static fields and methods into a class and you can access them without class name reference.

The syntax for static imports are given below:

Code:

package com.java2novice.staticimport;
// To access all static members of a class
import static package-name.class-name.*;
//To access specific static variable of a class
import static package-name.class-name.static-variable;
//To access specific static method of a class
import static package-name.class-name.static-method;

Static Import Example:

Here we have two classes. The class MyStaticMembClass has one static variable and one static method. And anther class MyStaticImportExmp imports these two static members.

MyStaticMembClass.java

package com.java2novice.stat.imp.pac1;

public class MyStaticMembClass {

    public static final int INCREMENT = 2;

    public static int incrementNumber(int number){
        return number+INCREMENT;
    }
}

MyStaticImportExmp.java

package com.java2novice.stat.imp.pac2;

import static com.java2novice.stat.imp.pac1.MyStaticMembClass.*;

public class MyStaticImportExmp {

    public static void main(String a[]){
        System.out.println("Increment value: "+INCREMENT);
        int count = 10;
        System.out.println("Increment count: "+incrementNumber(count));
        System.out.println("Increment count: "+incrementNumber(count));
    }
}

Output:

Increment value: 2
Increment count: 12
Increment count: 12

answer Jan 28, 2016 by Karthick.c
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