Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.StringTokenizer;

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

public class Main {

    /** Primitive type name -> class map. */
    private static final Map PRIMITIVE_NAME_TYPE_MAP = new HashMap();

    /** Setup the primitives map. */
    static {
        PRIMITIVE_NAME_TYPE_MAP.put("boolean", Boolean.TYPE);
        PRIMITIVE_NAME_TYPE_MAP.put("byte", Byte.TYPE);
        PRIMITIVE_NAME_TYPE_MAP.put("char", Character.TYPE);
        PRIMITIVE_NAME_TYPE_MAP.put("short", Short.TYPE);
        PRIMITIVE_NAME_TYPE_MAP.put("int", Integer.TYPE);
        PRIMITIVE_NAME_TYPE_MAP.put("long", Long.TYPE);
        PRIMITIVE_NAME_TYPE_MAP.put("float", Float.TYPE);
        PRIMITIVE_NAME_TYPE_MAP.put("double", Double.TYPE);
    }

    /**
     * Convert a list of Strings from an Interator into an array of Classes (the
     * Strings are taken as classnames).
     * 
     * @param it
     *          A java.util.Iterator pointing to a Collection of Strings
     * @param cl
     *          The ClassLoader to use
     * 
     * @return Array of Classes
     * 
     * @throws ClassNotFoundException
     *           When a class could not be loaded from the specified ClassLoader
     */
    public final static Class<?>[] convertToJavaClasses(Iterator<String> it, ClassLoader cl)
            throws ClassNotFoundException {
        ArrayList<Class<?>> classes = new ArrayList<Class<?>>();
        while (it.hasNext()) {
            classes.add(convertToJavaClass(it.next(), cl));
        }
        return classes.toArray(new Class[classes.size()]);
    }

    /**
     * Convert a given String into the appropriate Class.
     * 
     * @param name
     *          Name of class
     * @param cl
     *          ClassLoader to use
     * 
     * @return The class for the given name
     * 
     * @throws ClassNotFoundException
     *           When the class could not be found by the specified ClassLoader
     */
    private final static Class convertToJavaClass(String name, ClassLoader cl) throws ClassNotFoundException {
        int arraySize = 0;
        while (name.endsWith("[]")) {
            name = name.substring(0, name.length() - 2);
            arraySize++;
        }

        // Check for a primitive type
        Class c = (Class) PRIMITIVE_NAME_TYPE_MAP.get(name);

        if (c == null) {
            // No primitive, try to load it from the given ClassLoader
            try {
                c = cl.loadClass(name);
            } catch (ClassNotFoundException cnfe) {
                throw new ClassNotFoundException("Parameter class not found: " + name);
            }
        }

        // if we have an array get the array class
        if (arraySize > 0) {
            int[] dims = new int[arraySize];
            for (int i = 0; i < arraySize; i++) {
                dims[i] = 1;
            }
            c = Array.newInstance(c, dims).getClass();
        }

        return c;
    }

}