jaroslav@222
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/**
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* Back 2 Browser Bytecode Translator
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* Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. Look for COPYING file in the top folder.
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* If not, see http://opensource.org/licenses/GPL-2.0.
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*/
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package org.apidesign.vm4brwsr;
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import java.io.IOException;
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import java.lang.annotation.Annotation;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.lang.reflect.Method;
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import java.net.MalformedURLException;
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import org.apidesign.bck2brwsr.core.JavaScriptBody;
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/**
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*
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* @author Jaroslav Tulach <jtulach@netbeans.org>
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*/
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@ClassesMarker(number = 10, nicknames = { "Ten", "Deset" }, count = ClassesMarker.E.TWO, subs = {
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@ClassesMarker.Anno(Integer.SIZE),
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@ClassesMarker.Anno(Integer.MIN_VALUE)
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})
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@ClassesNamer(name = "my text", anno = @ClassesMarker.Anno(333))
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public class Classes {
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public static String nameOfIO() {
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return nameFor(IOException.class);
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}
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private static String nameFor(Class<?> c) {
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return c.getName();
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}
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private static final Class<?> PRELOAD = Runnable.class;
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public static boolean isInterface(String s) throws ClassNotFoundException {
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return Class.forName(s).isInterface();
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}
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public static boolean equalsClassesOfExceptions() {
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return MalformedURLException.class.getSuperclass() == IOException.class;
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}
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public static boolean differenceInClasses() {
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Class<?> c1 = MalformedURLException.class;
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Class<?> c2 = IOException.class;
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return c1 != c2;
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}
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public static String classForInstance() {
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return new IOException().getClass().getName().toString();
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}
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@ClassesMarker(number = 1, nicknames = { "One", "Jedna" } )
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public static String name() {
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return IOException.class.getName().toString();
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}
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public static String simpleName() {
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return IOException.class.getSimpleName();
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}
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public static String canonicalName() {
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return IOException.class.getCanonicalName();
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}
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public static String objectName() throws NoSuchMethodException {
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return IOException.class.getMethod("wait").getDeclaringClass().getName();
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}
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public static boolean newInstance() throws Exception {
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IOException ioe = IOException.class.newInstance();
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if (ioe instanceof IOException) {
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return ioe.getClass() == IOException.class;
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}
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throw new IllegalStateException("Not a subtype: " + ioe);
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}
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public static String newInstanceNoPubConstructor() throws Exception {
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try {
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Float f = Float.class.newInstance();
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return "wrong, can't instantiate: " + f;
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} catch (Exception ex) {
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return (ex.getClass().getName() + ":" + ex.getMessage()).toString().toString();
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}
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}
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public static int getMarker() {
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if (!Classes.class.isAnnotationPresent(ClassesMarker.class)) {
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return -2;
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}
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ClassesMarker cm = Classes.class.getAnnotation(ClassesMarker.class);
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assert cm instanceof Object : "Is object " + cm;
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assert cm instanceof Annotation : "Is annotation " + cm;
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assert !((Object)cm instanceof Class) : "Is not Class " + cm;
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return cm == null ? -1 : cm.number();
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}
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public static String getMarkerNicknames() {
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ClassesMarker cm = Classes.class.getAnnotation(ClassesMarker.class);
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if (cm == null) {
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return null;
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}
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final Object[] arr = cm.nicknames();
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assert arr instanceof Object[] : "Instance of Object array: " + arr;
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assert arr instanceof String[] : "Instance of String array: " + arr;
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assert !(arr instanceof Integer[]) : "Not instance of Integer array: " + arr;
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StringBuilder sb = new StringBuilder();
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for (String s : cm.nicknames()) {
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sb.append(s).append("\n");
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}
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return sb.toString().toString();
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}
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@Retention(RetentionPolicy.CLASS)
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@interface Ann {
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}
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public static String getRetention() throws Exception {
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Retention r = Ann.class.getAnnotation(Retention.class);
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assert r != null : "Annotation is present";
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assert r.value() == RetentionPolicy.CLASS : "Policy value is OK: " + r.value();
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return r.annotationType().getName();
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}
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public static String getMarkerE() {
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ClassesMarker cm = Classes.class.getAnnotation(ClassesMarker.class);
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if (cm == null) {
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return null;
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}
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return cm.count().name();
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}
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public static String getNamer(boolean direct) {
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if (direct) {
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ClassesNamer cm = Classes.class.getAnnotation(ClassesNamer.class);
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return cm == null ? null : cm.name();
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}
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for (Annotation a : Classes.class.getAnnotations()) {
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if (a instanceof ClassesNamer) {
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return ((ClassesNamer)a).name();
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}
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}
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return null;
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}
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public static int getInnerNamer() {
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ClassesNamer cm = Classes.class.getAnnotation(ClassesNamer.class);
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assert cm != null : "ClassesNamer is present";
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return cm.anno().value();
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}
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public static int getInnerNamers() {
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ClassesMarker cm = Classes.class.getAnnotation(ClassesMarker.class);
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assert cm != null : "ClassesNamer is present";
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int sum = 0;
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for (ClassesMarker.Anno anno : cm.subs()) {
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sum += anno.value();
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}
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return sum;
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}
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public static String intType() {
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return Integer.TYPE.getName();
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}
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public static int primitive() {
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return 1;
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}
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public static boolean primitiveB() {
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return true;
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}
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public static String primitiveType(String method) throws Exception {
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return reflectiveMethodCall(false, method).getClass().getName();
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}
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@JavaScriptBody(args = "msg", body = "throw msg;")
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private static native void thrw(String msg);
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public static Object reflectiveMethodCall(boolean direct, String mn) throws Exception {
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Method find = null;
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StringBuilder sb = new StringBuilder();
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if (!direct) {
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final Class<? extends Annotation> v = ClassesMarker.class;
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for (Method m : Classes.class.getMethods()) {
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sb.append("\n").append(m.getName());
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if (mn != null) {
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if (m.getName().equals(mn)) {
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find = m;
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break;
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}
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} else {
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if (m.getAnnotation(v) != null) {
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find = m;
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break;
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}
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}
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}
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} else {
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find = Classes.class.getMethod(mn);
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}
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if (find == null) {
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thrw(sb.toString());
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throw new NullPointerException(sb.toString());
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}
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return find.invoke(null);
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}
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public static int reflectiveSum(int a, int b) throws Exception {
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Method m = StaticMethod.class.getMethod("sum", int.class, int.class);
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return (int) m.invoke(null, a, b);
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}
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}
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