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+/**%0A * The HelloWorldApp class implements an application that%0A * simply prints %22Hello World!%22 to standard output.%0A */%0Aclass HelloWorldApp %7B%0A    public static void main(String%5B%5D args) %7B%0A        System.out.println(%22Hello World!%22); // Display the string.%0A    %7D%0A%7D%0A

Create HelloWorldApp.java