Javassist: Create new instance from CtClass

Below snippet return new instance from CtClass.

CtClass demoClass = .....;

Class<?> clazz = classPool.toClass(demoClass); 

Object obj = clazz.newInstance();

 

Find the below working application.

 

App.java

package com.sample.app;

import javassist.ClassPool;
import javassist.CtClass;

public class App {

    public static void main(String args[]) throws Exception {
        ClassPool classPool = ClassPool.getDefault();

        CtClass demoClass = classPool.makeClass("com.sample.app.model.Demo");

        Class<?> clazz = classPool.toClass(demoClass);
        Object obj = clazz.newInstance();

        System.out.println(obj.getClass());

    }
}

Run App.java, you will see below messages in console.

 

class com.sample.app.model.Demo

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