Hello World" program in Java:

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here's a simple "Hello World" program in Java:

java
public class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello, world!");
    }
}

This program defines a class named HelloWorld with a main method that prints the string "Hello, world!" to the console using the System.out.println() method. When you run this program, you should see the message "Hello, world!" printed to the console.

I hope this helps! Let me know if you have any questions.

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