将位范围设置为指定值。

/*******************************************************************************

 *   Copyright 2014 Analog Devices, Inc.

 *

 *   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.

 ********************************************************************************///来自 时代Java - nowjava.com

//package com.nowjava;


public class Main {

    public static void main(String[] argv) throws Exception {

        int word = 2;

        int mask = 2;

        int value = 2;

        System.out.println(setMaskedValue(word, mask, value));

    }


    /**

     * Sets a range of bits to specified value.

     * 

     * @param word is the original word.

     * @param mask specifies which bits in {@code word} will be set.

     * @param value must only use bits that are set in {@code mask} or else an incorrect value will be returned.

     *

     * @since 0.06

     */

    public static int setMaskedValue(int word, int mask, int value) {

        return (word & ~mask) | value;

    }