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How can we create an Object dynamically at Runtime in Java?

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Pragya Keshap answered on February 4, 2023 Popularity 2/10 Helpfulness 1/10

answer How can we create an Object dynamically at Runtime in Java?

How can we create an Object dynamically at Runtime in Java?

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We can use Reflection to create an Object dynamically at Runtime

in Java. We can use Class.newInstance() or

Constructor.newInstance() methods for creating such Objects.

// Java program to illustrate creation of Object
// using newInstance() method of Constructor class
 
// Importing required classes from java.lang package
import java.lang.reflect.*;
 
// Main class
class GFG {
 
    // Member variables of this class
    private String name;
 
    // Constructor of this class
    GFG() {}
 
    // Method 1
    // To set name ofthe string
    public void setName(String name)
    {
        // This method refers to current object itself
        this.name = name;
    }
 
    // Main driver method
    public static void main(String[] args)
    {
        // Try block to check for exceptions
        try {
            Constructor<GFG> constructor
                = GFG.class.getDeclaredConstructor();
 
            GFG r = constructor.newInstance();
 
            // Custom passing
            r.setName("GeeksForGeeks");
            System.out.println(r.name);
        }
 
        // Catch block to handle the exceptions
        catch (Exception e) {
 
            // Display the exception on console
            // using printStackTrace() method
            e.printStackTrace();
        }
    }
}

https://www.geeksforgeeks.org/different-ways-create-objects-java/

Popularity 2/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java object runtime

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Contributed on Feb 04 2023

Pragya Keshap

0 Answers Avg Quality 2/10

How can we create an Object dynamically at Runtime in Java?

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