It was developed by Sun Microsystems. Core Java is a term used by Sun Microsystems to refer to the Java to standard edition J2SE. This is the parent of all other editions of Java. … Difference between Java and Core Java. S. No.JavaCore Java2.It is used to develop applets and applications.It is used only to develop desktop and server based applications.Difference between Java and Core Java – GeeksforGeeks www.geeksforgeeks.org › difference-between-java-and-core-java