This is because of the reason that either Java is not installed on your system or Java is installed but the path is not set at all or the path is incorrectly set. On some systems, when you type javac – version or java –version, you will see that javac is not recognized as an internal or external command. This is the quick and easy way to check which version is installed on your system, you need to make sure that both the version of JSDK and JRE are same, for your programs to compile and execute. In this video I am going to show you How to install Java JDK on Windows 10 ( with JAVAHOME ). Setting Path and Classpath for Java in Windows 7 The video below outlines the steps to check which version of Java is running in your Windows 7 or XP computer. I am going to open up a command prompt by clicking Windows Start button on the bottom left corner of the screen and then type “cmd” in the search box, as you can see command prompt is open on my screen, on the command prompt type “javac” space hyphen (-) version, you can see the version of JSDK is displayed, similarly, you can type “java” space hyphen version, you can see how the version of JRE is displayed. Java 8 will still work properly on Windows XP but people/businesses with support contracts with Oracle will no longer be. Oracle just no longer supports the product in the same sense that Microsoft no longer supports Windows XP. This does not mean it will not work properly. In this tutorial, we will look at how to check which version of Java is installed on the system more specifically which version of Java software development kit that is JSDK and Java runtime environment that is JRE is installed. The technical answer is, no, it is no longer supported on Windows XP.
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