Java BigDecimal getRandomPriceChangeFactor(BigDecimal currentPrice)

Description

get Random Price Change Factor

License

Apache License

Declaration

public static BigDecimal getRandomPriceChangeFactor(BigDecimal currentPrice) 

Method Source Code

//package com.java2s;
/*/*from   w w w. j ava 2 s .  c o  m*/
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.math.BigDecimal;

import java.util.Random;

public class Main {
    public static final BigDecimal PENNY_STOCK_P = BigDecimal.valueOf(0.1);
    public static final BigDecimal JUNK_STOCK_MIRACLE_MULTIPLIER = BigDecimal.valueOf(500);
    public static final BigDecimal STOCK_P_HIGH_BAR = BigDecimal.valueOf(1000);
    public static final BigDecimal STOCK_P_HIGH_BAR_CRASH = BigDecimal.valueOf(0.05);
    public static final BigDecimal STOCK_CHANGE_MAX_PERCENT = BigDecimal.valueOf(5);

    public static BigDecimal getRandomPriceChangeFactor(BigDecimal currentPrice) {
        if (currentPrice.compareTo(PENNY_STOCK_P) == -1 || currentPrice.compareTo(PENNY_STOCK_P) == 0) {
            return JUNK_STOCK_MIRACLE_MULTIPLIER;
        } else if (currentPrice.compareTo(STOCK_P_HIGH_BAR) == 1 || currentPrice.compareTo(STOCK_P_HIGH_BAR) == 0) {
            return STOCK_P_HIGH_BAR_CRASH;
        }

        BigDecimal factor = BigDecimal.valueOf(0);
        Random rand = new Random();
        int y = rand.nextInt(STOCK_CHANGE_MAX_PERCENT.subtract(BigDecimal.ONE).intValue());
        y = y + 1;
        int x = rand.nextInt();

        if (x % 2 == 0) {
            factor = BigDecimal.ONE.subtract((BigDecimal.valueOf(y)).divide(BigDecimal.valueOf(100)));// / 100m;
        } else
            factor = BigDecimal.ONE.add(BigDecimal.ONE.add(BigDecimal.valueOf(y).divide(BigDecimal.valueOf(100))));
        return factor;
    }
}

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3. getProzentWert(BigDecimal zahl, BigDecimal prozentsatz, int nachkommastellen)
4. getRandomBigDecimal(BigDecimal a, BigDecimal b)
5. getRandomBigDecimal(int maxValue, int scale)
6. getRecordSize(List> columnBaseData)
7. getRSBigDecimal(Object object)
8. getScale(BigDecimal bd1, BigDecimal bd2)
9. getScaledDouble(BigDecimal input)