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HelloWorld.java

import java.lang;
public class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello World!"); // Prints "Hello World!" to the console.
    }
}

In this code, we import the java.lang package which contains standard Java classes and methods that are available by default. We create a public class called HelloWorld with a method main that takes an array of strings as its input. Within the main method, we use the System.out.println() method to print “Hello World!” to the console. The HelloWorld class is then compiled into an executable Java file using a Java compiler, such as javac, and can be run with the command java HelloWorld.java. This will output “Hello World!” in the console.

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