Java Integer Convert To fromInteger(int idx, Class clazz)

Description

from Integer

License

Apache License

Parameter

Parameter	Description
idx	the enum index
clazz	the enum class

Return

the enum at position idx

Declaration

public static <E extends Enum<E>> E fromInteger(int idx, Class<E> clazz) 

Method Source Code

//package com.java2s;
/*//from   w  w w. j a  v  a  2 s. c om
 * Copyright 2014 Martin Steiger
 *
 * 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.
 */

public class Main {
    /**
     * Uninitialized integer flag
     */
    public static final int UNINITIALIZED = -1;

    /**
     * @param idx the enum index
     * @param clazz the enum class
     * @return the enum at position idx
     */
    public static <E extends Enum<E>> E fromInteger(int idx, Class<E> clazz) {
        if (idx == UNINITIALIZED)
            return null;

        E[] vals = clazz.getEnumConstants();
        return vals[idx];
    }
}

Related

1. fromInt(int value)
2. fromInt(int value)
3. fromInt(int value)
4. fromInt(int value, byte[] arr, int offset)
5. fromInt(int x, int size)
6. fromInteger(int value)
7. fromInteger(Integer value)
8. fromInteger(Integer value, String defaultValue)
9. fromIntegers(Integer[] values, String defaultValue)