how to use reflection to print the names and values of all nonstatic fields of an object : Class Loader « Reflection « Java Tutorial

import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.Random;

public class Main {
  public static void main(String[] args) throws IllegalAccessException {
    Random r = new Random();
    System.out.println("\nAfter calling nextInt:\n");

  public static String spyFields(Object obj) throws IllegalAccessException {
    StringBuffer buffer = new StringBuffer();
    Field[] fields = obj.getClass().getDeclaredFields();
    for (Field f : fields) {
      if (!Modifier.isStatic(f.getModifiers())) {
        Object value = f.get(obj);
        buffer.append(" ");
        buffer.append("" + value);
    return buffer.toString();

7.7.Class Loader
7.7.1.URL class loader
7.7.2.extends URLClassLoader
7.7.3.Load classes to use reflection to print the names and values of all nonstatic fields of an object
7.7.5.Runs a jar application from any url
7.7.6.BufferedReader reflection
7.7.7.Get the class By way of an object
7.7.8.Get the class By way of a string
7.7.9.Get the class By way of .class
7.7.10.Catch InvocationTargetException
7.7.11.Determining from Where a Class Was Loaded
7.7.12.Dynamically Reloading a Modified Class
7.7.13.Creating an Object Using a Constructor Object
7.7.14.Create an object from a string
7.7.15.Using the forName() method
7.7.16.Context ClassLoader
7.7.17.A tree structure that maps inheritance hierarchies of classes
7.7.18.Analyze ClassLoader hierarchy for any given object or class loader
7.7.19.Instantiate unknown class at runtime and call the object's methods
7.7.20.Load Class