Java Random String randomstring(int lo, int hi)

Description

randomstring

License

Apache License

Declaration

public static String randomstring(int lo, int hi) 

Method Source Code

//package com.java2s;
/*****************************************************************************
 * See the NOTICE file distributed with//from  w w  w.j  a  v a 2 s  .c  o m
 * this work for additional information regarding copyright ownership.
 * ArtOfBI.com licenses this file to You 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.
 *****************************************************************************/

import java.util.*;

public class Main {
    private static Random rn = new Random();

    public static String randomstring(int lo, int hi) {
        int n = rand(lo, hi);
        byte b[] = new byte[n];
        for (int i = 0; i < n; i++)
            b[i] = (byte) rand('a', 'z');
        return new String(b, 0);
    }

    public static String randomstring() {
        return randomstring(5, 25);
    }

    public static int rand(int lo, int hi) {
        int n = hi - lo + 1;
        int i = rn.nextInt() % n;
        if (i < 0)
            i = -i;
        return lo + i;
    }
}

Related

1. randomString(int length)
2. randomString(int length)
3. randomString(int length)
4. randomString(int length)
5. randomString(int length)
6. randomString(int stringLength)
7. randomString(Integer len)
8. randomString(Random r, int minCount, int maxCount)
9. randomSubset(String[] list, int count)