Tag: tutorial

Java – How to check if a double value is Infinite ?

Problem Statement You need to find out if the given number of type double is Infinite or not. Solution Use the isInfinite method defined in the Double class to find of the given number is a infinite as shown below. The output of the above program is Abundantcode.com Java Tutorials true

Java – How to round a BigDecimal value in Java ?

Problem Statement You need round the BigDecimal value in your Java program. Solution Use the setScale method that is defined in the BigDecimal to round the value of the BigDecimal. You can also set the parameters like BigDecimal.ROUND_HALF_UP etc to the method. Output of the above program is Abundantcode.com Java Tutorials 10102.16

Java – How to Negate a BigDecimal in Java ?

Problem Statement You need to negate the value of the BigDecimal datatype in your java program. Solution Use the negate method defined in the BigDecimal class as shown below. The output of the above program is Abundantcode.com Java Tutorials -10102

Java How to – Find if the Class exists or not

Problem Statement You need to test for the presence of a class from your java program. Solution Use Class.forName method to find if a particular class exists. Below is a sample code snippet demonstrating the usage of Class.forName to find out if the class “test” exists. Note that this method throws an exception incase the class cannot be loaded. Note: You need to pass the…

Java How to – Get Environment Variables

Problem Statement You need to programmatically get the values of the environment variables from your java program. Solution Use java.lang.System.getenv method to get the environment variables from your java program from Java JDK 1.5 and higher version. You can pass the “PATH” as parameter to the method to retreive the path from the environment variable. When no arguments are passed, it returns all the environment…

Java How to – Compile and run Java program in Command-line

Problem Statement You need to compile and run your java program in command-line. Solution You can use the command-line tools available with Java Development Kit (JDK). The “javac” command tool can be used to compile the java program. The “java” command can be used to run the java program. Let’s build out first program and use the command line to run. 1. Download and install…

Json.NET & C# – How to Deserialize an Object ?

One of the ways to Deserialize an object to JSON string in C# in the Json.NET is using the DeSerializeObject method defined in the JsonConvert method. How to Deserialize an Object in C# using Json.NET ? Below is a sample code snippet demonstrating how you can deserialize an object from Json string to C# object using Json.NET. It takes the json string that contains the…

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