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Groovy Hello World program

Consider we want to print a simple string “Hello World” in Java. The code to achieve the string Groovy hello world would be:

public class Demo {
    public static void main(String[] args) {
        System.out.println("Hello World");
    }
}

The above code is valid in both Java and Groovy as Groovy is a superset of Java. But the advantage with Groovy is that we can do away with class creation, public method creation, etc and achieve the same output with a single line code as follows:

println "Hello World."

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