Posted on Jan 29, 2022

Day 21 of 100 - Java: Reflection

Reflection allows the executing Java program to examine or introspect itself and manipulate internal properties of the program.

For example,

import java.lang.reflect.*; class array1 { public static void main(String args[]) { try { Class cls = Class.forName("java.lang.String"); Object arr = Array.newInstance(cls, 10); Array.set(arr, 5, "this is a test"); String s = (String)Array.get(arr, 5); System.out.println(s); } catch (Throwable e) { System.err.println(e); } } }