Java Integer Create toInteger(E val)

Description

to Integer

License

Apache License

Parameter

Parameter	Description
val	the enum

Return

the index of the enum in the enum list

Declaration

public static <E extends Enum<E>> int toInteger(E val) 

Method Source Code

//package com.java2s;
/*//from   w ww .  j  a v a  2  s .co  m
 * 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 {
    /**
     * @param val the enum
     * @return the index of the enum in the enum list
     */
    public static <E extends Enum<E>> int toInteger(E val) {
        @SuppressWarnings("unchecked")
        E[] vals = (E[]) val.getClass().getEnumConstants();

        for (int idx = 0; idx < vals.length; idx++) {
            if (vals[idx] == val)
                return idx;
        }

        throw new IllegalArgumentException();
    }
}

Related

1. toInteger(byte[] b)
2. toInteger(byte[] bytes)
3. toInteger(byte[] bytes)
4. toInteger(byte[] bytes, int index)
5. toInteger(byte[] input)
6. toInteger(final byte[] data)
7. toInteger(final Double value)
8. toInteger(final Object o)
9. toInteger(final Object value)