Gets an array of all Constructor calls for the given class

 
/*
 * Copyright 2008 Ayman Al-Sairafi ayman.alsairafi@gmail.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License
 *       at http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
//package jsyntaxpane.util;

import java.io.File;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.net.URL;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * Reflection Utility methods
 * 
 * @author Ayman Al-Sairafi
 */
public class ReflectUtils {

    /**
     * Gets an array of all Constructor calls for the given class
     * @param aClass
     * @return
     */
    public static String[] getConstructorCalls(Class aClass) {
        Constructor[] constructors = aClass.getConstructors();
        String[] cons = new String[constructors.length];
        int i = 0;
        for (Constructor c : constructors) {
            cons[i++] = getJavaCallString(c);
        }
        return cons;
    }

    /**
     * Convert the constructor to a Java Code String
     * (arguments are replaced by the simple types)
     * @param c Constructor
     * @return
     */
    public static String getJavaCallString(Constructor c) {
        StringBuilder call = new StringBuilder();
        call.append(c.getDeclaringClass().getSimpleName());
        addParamsString(call, c.getParameterTypes());
        return call.toString();
    }
    /**
     * Adds the class SimpleNames, comma sepearated and surrounded by paranthesis to the
     * call StringBuffer
     * @param call
     * @param params
     * @return
     */
    public static StringBuilder addParamsString(StringBuilder call, Class[] params) {
        call.append("(");
        boolean firstArg = true;
        for (Class arg : params) {
            if (firstArg) {
                firstArg = false;
            } else {
                call.append(", ");
            }
            call.append(arg.getSimpleName());
        }
        call.append(")");
        return call;
    }
}

Related examples in the same category

1.	Constructor Reflection
2.	Creating an Object Using a Constructor Object
3.	Class Reflection: find out the constructor information
4.	Object Reflection: invoke constructor with parameters
5.	Get constructors of a class object
6.	Create object using Constructor object
7.	Getting a Constructor of a Class Object: By obtaining a list of all Constructors object
8.	Getting a Constructor of a Class Object: By obtaining a particular Constructor object.
9.	Passing a parameter to the constructor and calling a method dynamically
10.	Has Declared Constructor
11.	Get all construtors from a class
12.	Adds all Constructor (from Class.getConstructorCalls) to the list
13.	Convert the constructor to a Java Code String (arguments are replaced by the simple types)

Gets an array of all Constructor calls for the given class : Constructor « Reflection « Java

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