In Java, the entry point for a program is typically a method called “main” within a class. To run a Java program with a “main” method, you need to compile the Java source code and then execute the compiled class.

Here’s a step-by-step guide on how to run a Java program with a “main” method:

1. Write your Java code: Create a Java source file with a class containing the “main” method. For example:

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public class MyClass { public static void main(String[] args) { System.out.println(“Hello, world!”); } }

2. Save the file: Save the file with a .java extension, e.g., “MyClass.java”.
3. Compile the Java program: Open your terminal (command prompt) and navigate to the directory where your Java file is saved. Then, use the javaccommand to compile the Java code:

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javac MyClass.java

If there are no errors in your code, this will create a compiled class file called “MyClass.class.”

4. Run the Java program: After the compilation is successful, use the javacommand to execute the program:

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java MyClass 

Replace “MyClass” with the name of your class if it’s different. The program should run, and you should see the output:

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Hello, world!

Keep in mind that you need to have the Java Development Kit (JDK) installed on your system for the compilation and execution process to work. If you don’t have it installed, you can download it from the official Oracle website or use an OpenJDK distribution.