ランダムパスワード生成(手抜き)

Execution.java

import java.util.Random;

/**************************************************************************************************
 * Copyright (c) 2013. Yutaka Fujii                                                               *
 *                                                                                                *
 * 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 Execution {
    public static void main(String args[]){
        char[] c = charBox();
        for (int i=0;i<10;i++){
            Random randomGen = new Random();
            int ranNum = randomGen.nextInt(c.length);
            System.out.print(c[ranNum]);
        }
    }

    private static char[] charBox(){
        char[] s = {'a','b','c','d','e','f','g','h','i','j',
                    'k','l','m','n','o','p','q','r','s','t',
                    'u','v','w','x','y','z',
                    'A','B','C','D','E','F','G','H','I','J',
                    'K','L','M','N','O','P','Q','R','S','T',
                    'U','V','W','X','Y','Z',
                    '1','2','3','4','5','6','7','8','9','0',
        };
        return s;
    }
}