Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 2011-2013 HTTL Team.
 *  
 * 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.
 */

import java.lang.reflect.Field;

import java.lang.reflect.Modifier;

import java.util.ArrayList;

import java.util.List;

public class Main {
    public static List<Field> getPublicFields(Class<?> clazz) {
        List<Field> publicList = new ArrayList<Field>();
        List<Field> accessibleList = getAccessibleFields(clazz, Object.class);
        for (Field f : accessibleList) {
            if (Modifier.isPublic(f.getModifiers()) == true) {
                publicList.add(f);
            }
        }
        accessibleList.clear();
        return publicList;
    }

    public static List<Field> getAccessibleFields(Class<?> clazz) {
        return getAccessibleFields(clazz, Object.class);
    }

    public static List<Field> getAccessibleFields(Class<?> clazz, Class<?> limit) {
        Package topPackage = clazz.getPackage();
        List<Field> fieldList = new ArrayList<Field>();
        int topPackageHash = topPackage == null ? 0 : topPackage.hashCode();
        boolean top = true;
        do {
            if (clazz == null) {
                break;
            }
            Field[] declaredFields = clazz.getDeclaredFields();
            for (Field field : declaredFields) {
                if (top == true) { // add all top declared fields
                    fieldList.add(field);
                    continue;
                }
                int modifier = field.getModifiers();
                if (Modifier.isPrivate(modifier) == true) {
                    continue; // ignore super private fields
                }
                if (Modifier.isPublic(modifier) == true) {
                    addFieldIfNotExist(fieldList, field); // add super public methods
                    continue;
                }
                if (Modifier.isProtected(modifier) == true) {
                    addFieldIfNotExist(fieldList, field); // add super protected methods
                    continue;
                }
                // add super default methods from the same package
                Package pckg = field.getDeclaringClass().getPackage();
                int pckgHash = pckg == null ? 0 : pckg.hashCode();
                if (pckgHash == topPackageHash) {
                    addFieldIfNotExist(fieldList, field);
                }
            }
            top = false;
        } while ((clazz = clazz.getSuperclass()) != limit);

        return fieldList;
    }

    private static void addFieldIfNotExist(List<Field> allFields, Field newField) {
        for (Field f : allFields) {
            if (compareSignatures(f, newField) == true) {
                return;
            }
        }
        allFields.add(newField);
    }

    private static boolean compareSignatures(Field first, Field second) {
        return first.getName().equals(second.getName());
    }
}