Write a Java program to check whether Java is installed on your computer or not

Program

public class Demo {
 
 public static void main(String[] args) 
 {
	   System.out.println("\nJava Version: "+System.getProperty("java.version"));
	   System.out.println("Java Runtime Version: "+System.getProperty("java.runtime.version"));
	   System.out.println("Java Home: "+System.getProperty("java.home"));
	   System.out.println("Java Vendor: "+System.getProperty("java.vendor"));
	   System.out.println("Java Vendor URL: "+System.getProperty("java.vendor.url"));
	   System.out.println("Java Class Path: "+System.getProperty("java.class.path")+"\n");
	 }
}

Output:

Java Version: 12.0.1
Java Runtime Version: 12.0.1+12
Java Home: /Library/Java/JavaVirtualMachines/jdk-12.0.1.jdk/Contents/Home
Java Vendor: Oracle Corporation
Java Vendor URL: https://java.oracle.com/
Java Class Path: /Users/sateeshm/eclipse-workspace/3PMclass/bin