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Thread: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

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    Default Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    // my code here
    String pdecimal = Double.toString(guess);
    contents of 'guess' ---->>0.00891396012251904
    The result string field 'pdecimal' displays -->> 0.00) <<--
    That is to say "zero point zero zero parenthesis".
    Only with very few numbers such as above does the bug show up.
    Using ECLIPSE Version: 3.4.2
    Build id: M20090211-1700
    Other 'toString's in program work ok.


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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    It works perfectly fine for me. Post a SSCCE.

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    I think its a case of the IDE doing something on its own vs using Oracle's programs.

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    Quote Originally Posted by Norm View Post
    I think its a case of the IDE doing something on its own vs using Oracle's programs.
    i agree; in other java programs the number converts ok. but when i filed a bug on ECLIPSE forum they said it was a java problem.
    ...thanks for your reply...

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    Quote Originally Posted by Junky View Post
    It works perfectly fine for me. Post a SSCCE.
    what's SSCCE? i already posted problem as a bug on ECLIPSE forum.
    i agree; in other java programs the number converts ok. but when i filed a bug on ECLIPSE forum they said it was a java problem.
    ...thanks for your reply...

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    on ECLIPSE forum they said it was a java problem.
    Did they say which version of java?
    This works for me on 3 versions of java:
          double dbl = 0.00891396012251904;
          System.out.println("dbl=" + Double.toString(dbl));  // dbl=0.00891396012251904

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    Quote Originally Posted by jforumohn View Post
    what's SSCCE?
    An SSCCE is a short, self-contained, compilable example.

    If you think you found a bug, chances are you haven't. Post the exact, full code (but shortened to take out anything extra) that you're using when you get the weird behavior.
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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    The result string field 'pdecimal' displays -->> 0.00) <<--
    You have not shown the code that displays the value in your posting.
    Can you post the code that displays that value?

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    //for test plug 19549.3120187621 into 'principal'
    //for test plug 60 into 'term'
    //for test plug 333.33 into 'payment'
    //with above values the double field 'guess' will contain 0.00891396012251904 after the computations
    //****interest click button***********
        	 public void continueclick (View view)
        	 {
     
    if (text.getText().length() == 0)
    	    	    	{
    	    				Toast.makeText(this, "Please enter a valid principal number",
    	    						Toast.LENGTH_LONG).show();
    	    				return;
     
    	    			}
    if (text3.getText().length() == 0)
    						 {
    							Toast.makeText(this, "Please enter a valid term number",
    							Toast.LENGTH_LONG).show();
    						return;
    			    			}
    if (text4.getText().length() == 0)
    						 {
    							Toast.makeText(this, "Please enter a valid payment number",
    							Toast.LENGTH_LONG).show();
    						return;
    			    			}
     
    //****************
    double term = Float.parseFloat(text3.getText().toString());
    double payment = Float.parseFloat(text4.getText().toString());
    double principal = Float.parseFloat(text.getText().toString());
       double P = principal;
       double lowguess = .0001;
    double n = term;
        double avgterm = (n / 12);
        double ncount = n;
        double compound = 0;
        char done = 'n';
        //---------------
        //n = number of months
        double temp = avgterm * lowguess;
        double temp1 = principal * temp; //1 month interest
        //principal * interest * 1 month = payment
        compound = 0;
        ncount = n;
        double guess = .000001;
        double toohi = .999;
        double toolo = .001;
        double pmt1 = 0;
        guess = .05;
        int savedcounter = 0;
        guess = guess / 12;
        while (done == 'n')
        {
            ncount = n;
            compound = 0;
            principal = P;
     
     
            double i = guess;
     
                temp = 1 + i;
                double temp2 = Math.pow(temp, n);
                temp1 = i * temp2;
                double temp3 = temp2 - 1;
                double temp4 = temp1 / temp3;
                double temp5 = P * temp4;
     
                pmt1 = temp5;
            temp4 = Math.abs(payment - pmt1);
     
            if (pmt1 == payment)
            {
                done = 'y';
            }
            if (temp4 < .1)
            {
                done = 'y';
            }
            if (done == 'n')
            {
                if (pmt1 > payment)
                {
                    toohi = guess;
                    temp = toohi - toolo;
                    temp1 = temp / 2;
                    guess = toohi - temp1;
                    double perpayofpmt = payment / pmt1;
                }
                if (pmt1 < payment)
                {
                    toolo = guess;
                    temp = toohi - toolo;
                    temp1 = temp / 2;
                    guess = toolo + temp1;
                    double perpmtofpay = pmt1 / payment;
     
                }
                int tempout = 25;
                if (savedcounter > tempout)
                {
     
                    if (pmt1 < payment)
                    {
                        guess = guess * tempout;
                      //  temp5 = guess * perpmtofpay;
                      //  guess = guess + temp5;
                    }
                    if (pmt1 > payment)
                    {
                        guess = guess / tempout;
                       // temp5 = guess * perpayofpmt;
                       // guess = guess - temp5;
                    }
                    tempout = tempout + 25;
     
                }
                savedcounter++;
     
     
                if (savedcounter > 5000)
                {
     
                    done = 'y';
                }
            } //end if done bracket
        } //done loop
     
     
        guess = guess * 12;
        String pdecimal = Double.toString(guess);
     
     
        pdecimal = pdecimal.replace("*","99999");
        pdecimal = pdecimal.replace(")","89139");
     
    text2.setText(pdecimal);
     
    text5.setText(String.valueOf(savedcounter));
    text6.setText(String.valueOf(pmt1));
     
    if (savedcounter == 5001)
    	    	    	{
    	Toast.makeText
    	(this, "PAYMENT IS OFF TOO MUCH...TRY TO GUESS BETTER PAYMENT...SEE CLOSEST PAYMENT WINDOW",
    	Toast.LENGTH_LONG).show();
    	    	    	}
     
        	 }

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    Sorry, but that's not an SSCCE. I'm willing to bet that your "bug" is really a result of whatever that code is doing. Your SSCCE should only be a few lines long, and it should be a complete class with a main method so we can copy and paste it.

    Sorry, but you have no idea how often somebody cries "bug!" when really it's just a silly mistake or a misunderstanding of how things work.
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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    What do we need to do with the code you posted to get the result that this thread is talking about?

    The posted code isn't in a class with a main() method so what do we do with it???

    You need to create code that generates the bad results for you.
    Then post that same exact code so we can see if we get the problem.

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    pdecimal = pdecimal.replace("*","99999");
        pdecimal = pdecimal.replace(")","89139");

    the above 2 instructions only serve to replace the spurious ")" and "*".

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    Quote Originally Posted by Norm View Post
    Did they say which version of java?
    This works for me on 3 versions of java:
          double dbl = 0.00891396012251904;
          System.out.println("dbl=" + Double.toString(dbl));  // dbl=0.00891396012251904
    ***my reply***
    i didn't make it clear...ECLIPSE people just assumed it was a java problem but not a known java problem.
    ...thanks for your replies...

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    If your not going to post code (a SSCCE) then you might as well close this thread.
    Nothing can be done without code that shows the problem.

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    to reproduce the error you'd have to...
    1. be in 'ECLIPSE Version: 3.4.2 Build id: M20090211-1700' within an ANDROID cellphone project.
    2. have a text field like this...
    <EditText android:layout_height="wrap_content"
    android:layout_width="match_parent"
    android:textSize = "15sp"
    android:inputType="numberDecimal|numberSigned"
    android:enabled="true" android:id="@+id/editText2"
    android:text=" ">
    </EditText>

    3. have a double contaning 0.00891396012251904.
    4. execute...
    String pdecimal = Double.toString(guess); where 'guess' is the double in item 3 above.
    5. execute...
    text2.setText(pdecimal); where 'text2' is item 2 above.
    doing the above will result in 'text2' window showing...
    0.00)
    ...in the CELLPHONE EMULATOR WINDOW.

    i have a java applet with same code that displays 0.00891396012251904 properly in the applet window.

  16. #16
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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    That environment has a lot in it beside Java. How about a problem with Android?

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    Quote Originally Posted by Norm View Post
    That environment has a lot in it beside Java. How about a problem with Android?
    duh...try to tell the ECLIPSE and ANDROID people that.

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    What is output if you write the String to the log?
    Or any other debug output screen?

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    Quote Originally Posted by Norm View Post
    What is output if you write the String to the log?
    Or any other debug output screen?
    the problem was with ECLIPSE GANAMEDE. ECLIPSE GALELIO (GALALEO?) works ok. it is a blasted BUG in ECLIPSE GANAMEDE!
    ...thanks for your interst...i appreciate it.

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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    Quote Originally Posted by Junky View Post
    It works perfectly fine for me. Post a SSCCE.
    the problem was with ECLIPSE GANAMEDE. ECLIPSE GALELIO (GALALEO?) works ok. it is a blasted BUG in ECLIPSE GANAMEDE!
    ...thanks for your interst...i appreciate it.

  21. #21
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    Default Re: Double.toString bug. Spurious right parenthesis and an asterisk replace digits.

    Glad you were able to isolate it.
    Now we can all have complete faith in Oracle's java again.

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