Force the given class to be loaded fully. : ClassLoader « Reflection « Java

Force the given class to be loaded fully.

import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

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public class Main {

   * Force the given class to be loaded fully.
   * <p>
   * This method attempts to locate a static method on the given class the
   * attempts to invoke it with dummy arguments in the hope that the virtual
   * machine will prepare the class for the method call and call all of the
   * static class initializers.
   * @param type
   *          Class to force load.
   * @throws NullArgumentException
   *           Type is <i>null</i>.
  public static void forceLoad(final Class type) {
    if (type == null)
      System.out.println("Null Argument Exception");

    // don't attempt to force primitives to load
    if (type.isPrimitive())

    // don't attempt to force java.* classes to load
    String packageName = Classes.getPackageName(type);
    // System.out.println("package name: " + packageName);

    if (packageName.startsWith("java.") || packageName.startsWith("javax.")) {

    // System.out.println("forcing class to load: " + type);

    try {
      Method methods[] = type.getDeclaredMethods();
      Method method = null;
      for (int i = 0; i < methods.length; i++) {
        int modifiers = methods[i].getModifiers();
        if (Modifier.isStatic(modifiers)) {
          method = methods[i];

      if (method != null) {
        method.invoke(null, (Object[]) null);
      } else {
    } catch (Exception ignore) {


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