Core Java from scratch-Part 4: The Secrets Behind the Main Method in Java- Explanation! 🗝️🚀
#java #javaforbeginners
+What Does All That Stuff Mean in Main Method?
Why every Java Program needs a Main Method?
Java Main Method explanation
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📌 In Java, the main method is the entry point for any standalone application. When you run a Java program, the JVM (Java Virtual Machine) looks for this method to start executing the program.
📌 Here's a breakdown of what each part of the main method means:
1. public
This is an access modifier. It means that this method is accessible from anywhere. Since the JVM needs to access the main method from outside the class (to start the program), it has to be public.
2. static
The static keyword means that the method belongs to the class, not to a specific instance of the class. This is crucial because the JVM needs to call this method without creating an instance of the class.
By declaring main as static, the JVM can invoke it directly, like ClassName.main().
3. void
This specifies the return type of the method. void means the method does not return any value. The main method doesn't need to return anything to the JVM after it finishes executing.
4. main
This is the name of the method. It's a special method name that the JVM looks for as the starting point of the program. If you change this name, the JVM won’t be able to find it and will throw an error.
5. String[] args
String[]: This indicates that the main method takes an array of String objects as its parameter. Each element of the array is one of the command-line arguments passed to the program.
args: This is just a name for the parameter, and you can change it to anything (like String[] myArgs)
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