这个想法是要有一个函数，找到正确的价格使用，包括税，使价格结束于一个.99结束，例如，如果成本是$1.33，最终价格应该结束于$1.99，包括税.所以，代码显示在原生java工作得很好，但是在Android中实现java会出现内存错误，即使我使用Android的RxJava在后台线程上运行它。
下面是我在android中使用的Java代码：

public class Main {
    static  int counts = 0;

    public static void main(String[] args) {
    // write your code here

        System.out.println("Price to use : " + findPriceToCharge99(Double.parseDouble("0.05" ) , .15 ) + "  :::counts "+counts);
    }

    public static double roundDecimalPlaces(double value, int places) {
        if (places < 0) throw new IllegalArgumentException();

        BigDecimal bd = BigDecimal.valueOf(value);
        bd = bd.setScale(places, RoundingMode.HALF_UP);
        return bd.doubleValue();
    }

    static double findPriceToCharge99(double price,double taxVal){
        price= roundDecimalPlaces(price ,2);
        double taxAmount = (price)  * taxVal ;
        counts++;
        String check = roundDecimalPlaces((price + taxAmount),2)+"";
        return  check.split("\\.")[1].equals("99") ? price : findPriceToCharge99(price+.01 ,taxVal);
    }
}

下面是我的堆栈跟踪：

2021-03-12 08:27:40.288 18794-19179/com.app E/AndroidRuntime: FATAL EXCEPTION: RxCachedThreadScheduler-2
    Process: com.app, PID: 18794
    io.reactivex.exceptions.UndeliverableException: The exception could not be delivered to the consumer because it has already canceled/disposed the flow or the exception has nowhere to go to begin with. Further reading: https://github.com/ReactiveX/RxJava/wiki/What's-different-in-2.0#error-handling | java.lang.StackOverflowError: stack size 1039KB
        at io.reactivex.plugins.RxJavaPlugins.onError(RxJavaPlugins.java:367)
        at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:69)
        at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
        at java.lang.Thread.run(Thread.java:919)
     Caused by: java.lang.StackOverflowError: stack size 1039KB
        at java.lang.ref.PhantomReference.<init>(PhantomReference.java:80)
        at sun.misc.Cleaner.<init>(Cleaner.java:115)
        at sun.misc.Cleaner.create(Cleaner.java:133)
        at libcore.util.NativeAllocationRegistry.registerNativeAllocation(NativeAllocationRegistry.java:242)
        at java.math.BigInt.makeValid(BigInt.java:48)
        at java.math.BigInt.putULongInt(BigInt.java:83)
        at java.math.BigInteger.<init>(BigInteger.java:105)
        at java.math.BigInteger.valueOf(BigInteger.java:375)
        at java.math.BigDecimal.getUnscaledValue(BigDecimal.java:2946)
        at java.math.BigDecimal.doubleValue(BigDecimal.java:2552)