You can use `String.format(&quot;%.2f&quot;, d)`, your double will be rounded automatically.

One easy way to do it:

        Double d;
        Int i;
        D+=0.005;
        i=d*100;
        Double b = i/100;
        String s = b.toString():




&lt;!-- begin snippet: js hide: false console: true babel: false --&gt;

&lt;!-- language: lang-js --&gt;

    // Load the Visualization API and the piechart package.
    google.load(&#39;visualization&#39;, &#39;1.0&#39;, {&#39;packages&#39;:[&#39;corechart&#39;]});

    // Set a callback to run when the Google Visualization API is loaded.
    google.setOnLoadCallback(drawChart);

    // Callback that creates and populates a data table,
    // instantiates the pie chart, passes in the data and
    // draws it.
    function drawChart() {

      // Create the data table.
      var data = new google.visualization.DataTable();
      data.addColumn(&#39;string&#39;, &#39;Topping&#39;);
      data.addColumn(&#39;number&#39;, &#39;Slices&#39;);

      var myData = {
        &#39;Mushrooms&#39;: 3,
        &#39;Onions&#39;: 1,
        &#39;Olives&#39;: 1,
        &#39;Zucchini&#39;: 1,
        &#39;Pepperoni&#39;: 2
      };

      var rows = [];
      for (element in myData) {
          rows.push([element + &quot; (&quot; + myData[element] + &quot;)&quot;, myData[element]])
      }
      data.addRows(rows);

      // Set chart options
      var options = {&#39;title&#39;:&#39;How Much Pizza I Ate Last Night&#39;,
                     &#39;width&#39;:450,
                     &#39;height&#39;:300};

      // Instantiate and draw our chart, passing in some options.
      var chart = new google.visualization.PieChart(document.getElementById(&#39;chart_div&#39;));
      chart.draw(data, options);
    }

&lt;!-- language: lang-html --&gt;

    &lt;script type=&quot;text/javascript&quot; src=&quot;https://www.google.com/jsapi&quot;&gt;&lt;/script&gt;

    &lt;div id=&quot;chart_div&quot;&gt;&lt;/div&gt;

&lt;!-- end snippet --&gt;

[Example fiddle](http://jsfiddle.net/invernizzie/T4yWz/1/)

How do I remove padding or margins in this example?

Remove padding or margins from Google Charts

I am currently trying to learn JSP. My question is, at present I used to include the header and footer of the page using:

    &lt;%@include file=&quot;includes/header.jsp&quot; %&gt;

and 

    &lt;%@include file=&quot;includes/footer.jsp&quot; %&gt;
But now, I have separated the page content also. So, if user clicks on a page, say products, it has to load the JSP file which is situated in: `includes/pages/products.jsp`
So, the link to the user is like: `&lt;a href=&quot;index.jsp?p=products&quot;&gt;Products&lt;/a&gt;`.

So, I have to get the p value and display the page based on it.

Following is what I have done so far.

    &lt;%
     if(request.getParameter(&quot;p&quot;)!=null)
     { 
       String p = request.getParameter(&quot;p&quot;);
    %&gt;    
    
    &lt;%@include file=&quot;includes/page_name.jsp&quot; %&gt;
    
    &lt;% 
     }
    %&gt;
So, how do I place the value of variable &quot;p&quot; in position of &quot;page_name&quot; ?

Or, is there any other method that I could use ?

In PHP, we could use the `include()` or `include_once()`. I am bit stuck in this JSP. :(

Include another JSP file

&gt; **Possible Duplicate:**  
&gt; [Round a double to 2 significant figures after decimal point](https://stackoverflow.com/questions/2808535/round-a-double-to-2-significant-figures-after-decimal-point)  

&lt;!-- End of automatically inserted text --&gt;

I know that there are plenty of examples on how to round this kind numbers.
But could someone show me how to round double, to get value that I can display as a 
String and ALWAYS have 2 decimal places?



Android - Round to 2 decimal places

> Possible Duplicate: 
> <a href="https://stackoverflow.com/questions/2808535/round-a-double-to-2-significant-figures-after-decimal-point" target="_blank" rel="noopener noreferrer">Round a double to 2 significant figures after decimal point</a>

I know that there are plenty of examples on how to round this kind numbers.
But could someone show me how to round double, to get value that I can display as a
String and ALWAYS have 2 decimal places?

I have an `EditText` field with a Customer Text Watcher on it. In a piece of code I need to change the value in the EditText which I do using `.setText(&quot;whatever&quot;)`.

The problem is as soon as I make that change the `afterTextChanged` method gets called which created an infinite loop. How can I change the text without it triggering afterTextChanged? 

I need the text in the afterTextChanged method so don&#39;t suggest removing the `TextWatcher`.

How can I change the EditText text without triggering the Text Watcher?

     Cursor findNormalItems = db.query(&quot;items&quot;, columns, &quot;type=?&quot;, 
                                       new String[] { &quot;onSale&quot; });
I want to return the cursor that points anything that are NOT onSale, what should I change? Thanks! 


What is the syntax for &quot;not equal&quot; in SQLite?

I&#39;m having an error with Eclipse and Android&#39;s SDK. apparently, it comes from the fact that my certificate expired. So I googled the error and I found that I have to remove the ~/.android/debug.keystore file. The thing is I can&#39;t find this file. It&#39;s not in my SDK.

Can someone help me with this ?

Edit: I work on Mac.

I can&#39;t find the debug.keystore file

I&#39;d like to do a simple control: a container with a view inside. If I touch the container and I move the finger, I want to move the view to follow my finger. 

What kind of container (layout) should I use? How to do this?

I don&#39;t need to use a surface, but a simple layout.

android: move a view on touch move (ACTION_MOVE)

I want to get following values from Latitude and Longitude in android

 1. Street Address
 2. City / State
 3. Zip
 4. Complete Address

How to achieve this?

How to get complete address from latitude and longitude?

In the following program you can see that each value slightly less than `.5` is rounded down, except for `0.5`.

    for (int i = 10; i &gt;= 0; i--) {
        long l = Double.doubleToLongBits(i + 0.5);
        double x;
        do {
            x = Double.longBitsToDouble(l);
            System.out.println(x + &quot; rounded is &quot; + Math.round(x));
            l--;
        } while (Math.round(x) &gt; i);
    }

prints

    10.5 rounded is 11
    10.499999999999998 rounded is 10
    9.5 rounded is 10
    9.499999999999998 rounded is 9
    8.5 rounded is 9
    8.499999999999998 rounded is 8
    7.5 rounded is 8
    7.499999999999999 rounded is 7
    6.5 rounded is 7
    6.499999999999999 rounded is 6
    5.5 rounded is 6
    5.499999999999999 rounded is 5
    4.5 rounded is 5
    4.499999999999999 rounded is 4
    3.5 rounded is 4
    3.4999999999999996 rounded is 3
    2.5 rounded is 3
    2.4999999999999996 rounded is 2
    1.5 rounded is 2
    1.4999999999999998 rounded is 1
    0.5 rounded is 1
    0.49999999999999994 rounded is 1
    0.4999999999999999 rounded is 0

I am using Java 6 update 31.


Why does Math.round(0.49999999999999994) return 1?

In our code we have a double that we need to convert to an int.

    double score = 8.6;
    int i1 = Convert.ToInt32(score);
    int i2 = (int)score;

Can anyone explain me why `i1 != i2`?

The result that I get is that: `i1 = 9` and `i2 = 8`.

Converting a double to an int in C#

Is there a function that can truncate or round a Double?  At one point in my code I would like a number like: `1.23456789` to be rounded to `1.23`

Scala Doubles, and Precision

I have a long string with double-type values separated by `#` -`value1#value2#value3#` etc

I splitted it to string table. Then, I want to convert every single element from this table to double type and I get an error. What is wrong with type-conversion here?

    string a = &quot;52.8725945#18.69872650000002#50.9028073#14.971600200000012#51.260062#15.5859949000000662452.23862099999999#19.372202799999250800000045#51.7808372#19.474096499999973#&quot;;
    string[] someArray = a.Split(new char[] { &#39;#&#39; });
    for (int i = 0; i &lt; someArray.Length; i++)
    {
		Console.WriteLine(someArray[i]); // correct value
		Convert.ToDouble(someArray[i]); // error
    }


Converting string to double in C#

I have a large amount of numeric values `y` in javascript.  I want to group them by rounding them down to the nearest multiple of `x` and convert the result to a string. 

How do I get around the annoying floating point precision?  

For example:

    0.2 + 0.4 = 0.6000000000000001

Two things I have tried:

    &gt;&gt;&gt; y = 1.23456789 
    &gt;&gt;&gt; x = 0.2 
    &gt;&gt;&gt; parseInt(Math.round(Math.floor(y/x))) * x; 
    1.2000000000000002

and:

    &gt;&gt;&gt; y = 1.23456789 
    &gt;&gt;&gt; x = 0.2 
    &gt;&gt;&gt; y - (y % x)
    1.2000000000000002

Dealing with float precision in Javascript

I need to work with decimals.
In my program, the user need to put a number with decimals to convert that number.

The problem is: If I try to convert the argument into a number I get a integer without decimals.

    # ARGV[0] is: 44.33
    
    size = ARGV[0]
    
    puts size.to_i
    # size is: 44
    # :(

Convert string to decimal number in ruby

For a script I&#39;m writing, I need display a number that has been rounded, but not the decimal or anything past it. I&#39;ve gotten down to rounding it to the third place, but I&#39;m not sure how to go about just dropping the decimal and everything past it, as it doesn&#39;t seem like JavaScript has a `substr` function like PHP does.

Any recommendations?

Truncate/round whole number in JavaScript?

i need a regular expression for decimal/float numbers like 12    12.2 1236.32 123.333 and +12.00 or -12.00  or ...123.123...  for using in javascript and jQuery.
Thank you.

regular expression for finding decimal/float numbers?

Trying to remove all letters and characters that are not 0-9 and a period.  I&#39;m using `Character.isDigit()` but it also removes decimal, how can I also keep the decimal?

Java String remove all non numeric characters but keep the decimal separator

I have a set of string numbers having decimals, for example: `23.456`, `9.450`, `123.01`... I need to retrieve the number of decimals for each number, knowing that they have at least 1 decimal.

In other words, the `retr_dec()` method should return the following:

    retr_dec(&quot;23.456&quot;) -&gt; 3
    retr_dec(&quot;9.450&quot;)  -&gt; 3
    retr_dec(&quot;123.01&quot;) -&gt; 2

Trailing zeros do count as a decimal in this case, unlike in this [related question](https://stackoverflow.com/questions/9539513/is-there-a-reliable-way-in-javascript-to-obtain-the-number-of-decimal-places-of).

Is there an easy/delivered method to achieve this in Javascript or should I compute the decimal point position and compute the difference with the string length? Thanks

Javascript: How to retrieve the number of decimals of a *string* number?

I need to round for example `6.688689` to `6.7`, but it always shows me `7`.

My method:

    Math.round(6.688689);
    //or
    Math.round(6.688689, 1);
    //or 
    Math.round(6.688689, 2);
But result always is the same `7`... What am I doing wrong?

How to round float numbers in javascript?

I have a double (call it x), meant to be 55 but in actuality stored as 54.999999999999943157 which I just realised.

So when I do 

    double x = 54.999999999999943157;
    int y = (int) x;

y = 54 instead of 55!

This puzzled me for a long time. How do I get it to correctly round? 

C++: How to round a double to an int?

i have value in php variable like that

    $var=&#39;2.500000550&#39;;
    echo $var

what i want is to delete all decimal points after 2 digits.

like now value of variable will be

    $var=&#39;2.50&#39;;
    echo $var

&gt; keep in mind this value is coming from mysql databse

but when i use `round php function` i got round but i dont need round, i just need to delete all digits after 2 decimal simple.

i have tired, `flot()` and lot of other option no success.

Thanks

Content Type	Original Author	Original Content on Stackoverflow
Question	goodm	View Question on Stackoverflow
Solution 1 - Android	OleGG	View Answer on Stackoverflow
Solution 2 - Android	jersam515	View Answer on Stackoverflow

Android - Round to 2 decimal places

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Include another JSP file

Remove padding or margins from Google Charts

Attributions