Enumerating Methods of a Class

How can I enumerate the methods of an object? I know there must be away since JBuilder and other IDEs know how to populate a list ofmethods from a class.

Java possesses a mechanism called reflection, which allows you todynamically discover things about classes. The Object class containsa method called getClass() which enables you to obtain a reference toa Class object that contains all sorts of wonderful information aboutthe class. getMethods() will return all the methods of a class,stored as an array of java.lang.reflect.Method objects.

The Method class lets you learn the name, parameters, return type, exceptions,and other information about a method. The following programdemonstrates a trivial printMethods() function that will print thestring representation of all the methods of an object.

import java.lang.reflect.*;public class ListMethods {  public static void printMethods(Object obj) {    Method[] methods;    methods = obj.getClass().getMethods();    for(int i = 0; i < methods.length; ++i)      System.out.println(methods[i].toString());  }  public static final void main(String[] args) {    printMethods(new String());  }}
Share the Post:
Share on facebook
Share on twitter
Share on linkedin


The Latest

microsoft careers

Top Careers at Microsoft

Microsoft has gained its position as one of the top companies in the world, and Microsoft careers are flourishing. This multinational company is efficiently developing popular software and computers with other consumer electronics. It is a dream come true for so many people to acquire a high paid, high-prestige job

your company's audio

4 Areas of Your Company Where Your Audio Really Matters

Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a

chrome os developer mode

How to Turn on Chrome OS Developer Mode

Google’s Chrome OS is a popular operating system that is widely used on Chromebooks and other devices. While it is designed to be simple and user-friendly, there are times when users may want to access additional features and functionality. One way to do this is by turning on Chrome OS