Java Random Int randomString(int size, String... keys)

Description

Return an random string

License

Apache License

Parameter

Parameter	Description
size	array length
keys	The key's datasource

Return

Return an random string.

Declaration

public static String randomString(int size, String... keys) 

Method Source Code

//package com.java2s;
/*/*from   w  w  w.ja  v a  2 s . c o  m*/
 *     Copyright 2016-2026 TinyZ
 *
 * 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 {
    /**
     * Return an random string
     *
     * @param size array length
     * @param keys The key's datasource
     * @return Return an random string.
     */
    public static String randomString(int size, String... keys) {
        if (keys == null || size < 1) {
            throw new IllegalStateException("Params is wrong");
        }
        StringBuilder builder = new StringBuilder();
        int length = keys.length;
        for (int i = 0; i < size; i++) {
            builder.append(keys[((int) (Math.random() * length))]);
        }
        return builder.toString();
    }
}

Related

1. randomString(int length)
2. randomString(int length)
3. randomString(int min, int max)
4. randomString(int numChar)
5. randomString(int size)
6. randomStringNumbers(int len)
7. randomtest(int max)
8. randomText(int length)
9. randomWithinRange(int min, int max)