How do I check my version of Java?

The Java Control Panel contains the Java version, which is accessible through the About section under the General tab. After clicking About, a dialog box displaying the Java version appears.

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How do I know if I have JDK installed?

Step 1: Check if JDK has been Pre-Installed

  1. If a JDK version number (for example, JDK x.x.x) is returned, JDK has already been set up.
  2. When the command not found message appears, JDK is not set up.
  3. In the event that the message To open javac, you need a Java runtime appears, choose Install and adhere to the JDK installation instructions.

Is Java 8 and Java 1.8 the same?

JDK 8 is the same product; therefore, 8 is the product version number and 1.8 is the developer version number (or internal version number).
How do I check my current Java version?
The Java Control Panel contains the Java version, which is accessible through the About section under the General tab. After clicking About, a dialog box displaying the Java version appears.

Ans: Java 8s continued popularity is largely due to the fact that it is an LTS (Long-Term Support) version; regrettably, not all Java versions are LTS versions; only Java 8 (2014) and Java 11 (2018) have been acknowledged as having LTS since the policy was put into place.