How to import custom class in Java

  1. Syntax to import class in Java
  2. Import custom Class in Java
  3. Import custom Class in Java
  4. Static Import Class in Java

This tutorial introduces how to import the custom class in Java.

If the class is present in the same package, then use that by creating its object, and if the class is present in another package, then we should first import the package the use its methods and variables. Let’s take a close look at the examples.

Syntax to import class in Java

Below is the syntax to import a class and static members of the class in Java.

import package.myclass;
import static package.myclass; // static import

Import custom Class in Java

Let’s create a custom class (Student) containing two instance variables and getter and setter methods. After that, import this class into the SimpleTesting class by using the import statement. See the example below.

  • Student.java
package myjavaproject;

class Student{
    String name;
    String email;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
}
  • SimpleTesting.java
package xyz;
import myjavaproject.Student;

public class SimpleTesting{ 
    public static void main(String[] args) {
        Student student = new Student();
        student.setName("Rohna");
        student.setEmail("rohna@xyz.com");
        System.out.println(student.getName());
        System.out.println(student.getEmail());
    }
}

Output:

Rohna
rohna@xyz.com

Import custom Class in Java

If the class is in the same package or in the same file, then we don’t need to import that but simply use it by creating an object of this class. See the example below.

package myjavaproject;

public class SimpleTesting extends Thread{ 
    public static void main(String[] args) {
        Student student = new Student();
        student.setName("Rohna");
        student.setEmail("rohna@xyz.com");
        System.out.println(student.getName());
        System.out.println(student.getEmail());
    }
}

Output:

Rohna
rohna@xyz.com

Static Import Class in Java

In case we only want to import static members of the class, we can use the static import concept. We need to use the static keyword with the import statement. See the example below.

import static java.lang.Math.*;
public class SimpleTesting{ 
    public static void main(String[] args) {
        int a = 10;
        double b = ceil(a);
        System.out.println(b);
    }
}

Output:

10.0
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