![]() The following online resources contain further information about BigDecimal and Groovy. Caught: : Unable to determine the current character, it is not a string, number, array, or object The current character read is ''' with an int value of 39 Unable to determine the current character, it is not a string, number, array, or object line number 1 index number 1 'a', 'b', 'c'. The Groovy Math documentation page calls Groovy's approach to mathematical operations a "least surprising" approach. Groovy simplifies many of the nuances of floating-point arithmetic and representation. This method is available on all numerical data types, such as int, double, and BigDecimal. Using parseDouble () Method of Double Class. Using the valueOf () method of Double class. In other words, the value of 0.1 is treated consistently as exactly 0.1 as long as the static types of float and double were not explicitly specified when declaring the variable. To convert a number to a string in Groovy, you can use the toString() method. Different Ways for Converting String to Double are mentioned below: Using the parseDouble () method of the Double class. Three, as the last few lines of the output demonstrate, Groovy prints out the value of 0.1 properly even when it reports Float, Double, or BigDecimal. Two, Groovy's dynamic typing automatically applies BigDecimal to floating-point numbers if no specific type is specified. When they are statically typed, they are essentially treated exactly as they are in Java with precision loss and all. One, Groovy allows variables to be statically typed. There are several observations one can make from this output. The following output is generated when this script is executed. ![]() The script also has several of the classes's Class definitions printed out to show how Groovy treats these classes. toDouble( stringValue) Convert a string to a double Parameters: stringValue Returns: a double value from the argument. The Groovier script shown above demonstrates that there is no need in Groovy to explicitly import . Convert a long value to double Parameters: longValue Returns: a double value from the argument. NEW_LINE = System.getProperty("parator")īigDecimal bdPrimDoubleCtor = new BigDecimal(primitiveDouble)īigDecimal bdPrimDoubleValOf = BigDecimal.valueOf(primitiveDouble)ĭouble referenceDouble = Double.valueOf(0.1)īigDecimal bdRefDoubleCtor = new BigDecimal(referenceDouble)īigDecimal bdRefDoubleValOf = BigDecimal.valueOf(referenceDouble) * Simple example of problems associated with using BigDecimal constructor In the above example, we have used the parseDouble() method of the Double class to convert the string variables into double. The following simple Groovy script is based on the Java class in the previous blog post, but it is now " Groovier" and has a few more things demonstrated. While Groovy supports declaring a string with either single quotes, or double. ![]() Also, we can parse a JSON String to a Map, calling it without any cast, and with the Groovy dynamic typing, we can have the same as the object. With Groovy's dynamic typing and automatic BigDecimal use, these subtleties can be abstracted away from the Groovy developer in many cases. Jenkins Pipeline uses rules identical to Groovy for string interpolation. In the above code, we have a method that receives a JSON String and returns an Account object, which can be any Groovy Object. For a float, the String approach is typically the only desirable approach for getting a float to a BigDecimal in Java. For a double, the Java developer is typically better off using BigDecimal.valueOf(double) or converting the double to a String and then using the BigDecimal(String) constructor. As I discussed in that post, using the BigDecimal(double) constructor rarely does what one would expect when passed a float or double. I need a different way to convert the String input to a double without causing a or a way to avoid this error.In a previous blog post, I looked at the subtle handling required to handle double with BigDecimal. Tabbed.java (class where the pop-up is displayed) public void onActivityResult(int requestCode, int resultCode, Intent data) ( Though I am only a beginner at using android studio so I could be wrong) "Caused by: : For input string: this class, I retrieve input1 and use the inputs to fill a recyclerView, which leads me to believe that retrieving input1 is not the problem, but instead the method of converting it to a double. I've tried converting the String to a double using this codeĭouble d = Double.parseDouble(String.valueOf(input1)) Some simple Kotlin and Groovy language differences can make converting scripts tedious: Groovy strings can be quoted with single quotes string or double. Groovy: How to define float numbers that would generate output as 2 digit decimal. Incorrect calculation in groovy - float and round. I need to convert a String input to a double so that I can create a toast pop-up if the input is out of a certain range (using if statements with operators).Įdit: input1 is a user input saved in room You cant set precision to a Float or Double in Java.
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