Java Hash Code Calculate hashCodeLowerCase(Object... toHash)

Description

lower cases any strings and then hashes them

License

Apache License

Declaration

public static int hashCodeLowerCase(Object... toHash) 

Method Source Code

//package com.java2s;
/*/*from  w w  w. j a  va2  s  .  c om*/
 * Copyright (C) 2013 salesforce.com, 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.
 */

public class Main {
    /**
     * lower cases any strings and then hashes them
     */
    public static int hashCodeLowerCase(Object... toHash) {
        for (int i = 0; i < toHash.length; i++) {
            Object o = toHash[i];
            if (o instanceof String) {
                toHash[i] = ((String) o).toLowerCase();
            }
        }
        return hashCode(toHash);
    }

    /**
     * shortcut for hashing some stuff.
     * 
     * @param toHash objects to hash, null objects will be skipped entirely
     */
    public static int hashCode(Object... toHash) {
        int hash = 7;
        for (Object o : toHash) {
            if (o != null) {
                hash = 31 * hash + o.hashCode();
            }
        }
        return hash;
    }
}

Related

1. hashCode(Object[] array)
2. hashCode(Object[] thisFields)
3. hashcode_old(final int[] array)
4. hashCodeEps(double value)
5. hashCodeForDoubleArray(double[] a)
6. hashCodeNullSafe(final Object o)
7. hashCodeOf(Object o)
8. hashCodeOrDefault(Object obj)
9. hashCodeOrNull(Object[] array)