Android Array Expand expand(Object obj, int size)

Description

expand

License

Apache License

Declaration

public static Object expand(Object obj, int size) 

Method Source Code

//package com.java2s;
/**//w  w  w  .ja v a  2s  . co  m
 * 
 * Copyright 2008 - 2009
 * 
 * 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.
 * 
 * @project loonframework
 * @author chenpeng
 * @email:ceponline@yahoo.com.cn
 * @version 0.1.1
 */

import java.lang.reflect.Array;

public class Main {

    public static Object expand(Object obj, int i, boolean flag) {
        int j = Array.getLength(obj);
        Object obj1 = Array.newInstance(obj.getClass().getComponentType(),
                j + i);
        System.arraycopy(obj, 0, obj1, flag ? 0 : i, j);
        return obj1;
    }

    public static Object expand(Object obj, int size) {
        return expand(obj, size, true);
    }

    public static Object expand(Object obj, int size, boolean flag,
            Class<?> class1) {
        if (obj == null) {
            return Array.newInstance(class1, 1);
        } else {
            return expand(obj, size, flag);
        }
    }
}

Related

1. arrayexpend(T[] array, int increment)
2. ensureLength(T[] original, int capacity)
3. expand(Object obj, int i, boolean flag)
4. expand(Object obj, int size, boolean flag, Class class1)