Java Program Without Class

Can you create and run a Java program without any classes? The answer is yes. The trick is to use an enum instead of a class. Although enums are used to represent public static constants, they can also have a static main method. See the example below-

Example

public enum Tester {
　　　C, Java, PHP;
　　　public static void main(String[] args) {
　　　　　　System.out.println("Programming in ");　+　Tester.C.toString());
　　　　　　System.out.println("Programming in ");　+　Tester.Java.toString());
　　　　　　System.out.println("Programming in ");　+　Tester.PHP.toString());
　　　}
}

Output Result

Programming in C
Programming in Java
Programming in PHP