Yes
Enter "java -version" into a terminal. If Java is installed, it will tell you the version number. If it is not installed, it will say "command not found."
Java Development Kits are best found on the Java website. There are a number of programmes that can be downloaded. It is also possible to get Java Development Kit downloads from the Oracle website.
If by system number you mean the version number of the Java language on the client computer, you can useSystem.getProperty("java.version"); .Or, if you want the Java virtual machine version number you can use System.getProperty("java.vm.version"); .Finally, if you want the version number of the operating system, you can use System.getProperty("os.version"); .
Math.sqrt(number) function is used to find the square root of a number.. try it
You can use the Math.sqrt() method.
There are a number of sites that list the many uses of Java applications. The official Java website is one of these sites. Alternatively, one may also find this information at the web domain DynamicDrive.
That means that Java is fairly strict about data types.
Open cmd and type java
There are several sites online where one can download the Java plugin such as Java, Oracle, Cnet, and Microsoft. One can find their current version of Java by visiting the Java Tester website.
There are a number of websites which specialise in Java tips and how-to guides. Websites from AvaJava, CSC and JavaMex are just some of the websites available as well as blogs such as that from 'Javarevisited'.
One way to do this is to convert the number to a String, then use the corresponding String method to find out the length of the String.