devxlogo

Methods of Class Instantiation

Methods of Class Instantiation

The following methods can be used for creating new instance of your classes, depending on your specific needs.

 import java.lang.ClassLoader;import java.net.URLClassLoader;import java.net.URL;public class InstantiateClass {   testFinally newInstance() throws Exception    {   

Second: Using the ClassLoader

 	               ClassLoader loader = this.getClass().getClassLoader();	   Class c = loader.loadClass("testFinally");	   return (testFinally) c.newInstance();										    }      testFinally newInstance0() throws Exception   {

Fourth: Using the ClassLoader

    		ClassLoader loader = InstantiateClass.class.getClassLoader();   		Class c = loader.loadClass("testFinally");   		return (testFinally) c.newInstance();					    }      testFinally newInstance1() throws Exception   {

Fourth: Using the ClassLoader

    		testFinally tf = (testFinally) testFinally.class.newInstance();   		return tf;   													    }   testFinally newInstance2() throws Exception    {	    

Using the Class class

     	Class claz = Class.forName("testFinally");    	testFinally tf = (testFinally) claz.newInstance();   			return(tf);			}	testFinally newInstance3() throws Exception	 {

Using the ClassLoader

 	 	ClassLoader loader = new URLClassLoader( new URL[]  { new URL(".") } );	 	Class c = loader.loadClass("testFinally");		return( (testFinally) c.newInstance());			  	 }			public static void main(String args[]) 	{		try		{

The conventional new method

 			testFinally tf0 = new testFinally();			tf0.main( new String[0] );					}		catch(Exception ex)		{ex.printStackTrace();}			   }	}
devxblackblue

About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

About Our Journalist