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Why is the Java main method static?

The method signature of a Java mainmethod is:

public static void main(String[] args) {
 ...
}

Is there a reason why this method must be static?

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  • 5
    Implementing an interface does not solve the instantiation problem. Commented Nov 15, 2011 at 18:59
  • 28
    I personally like that public static void main serves as a marker of an entry point – a public parameterless constructor doesn't scream out "This is probably an entry point!" in the same way. Commented May 12, 2012 at 16:58
  • 6
    @EdwinDalorzo - What would be gained by forcing the entry point class to be instantiated? Calling a static method places the least amount of burden on the class. It's free to instantiate itself if that makes more sense for your design. Commented Jul 14, 2012 at 19:48
  • 18
    "which constructor should be called?" How is that even conceivably a problem? The same "problem" exists for the decision which main to call. Weirdly enough (for you), the JVM manages this just fine. Commented Jul 17, 2012 at 19:50
  • 10
    The main method is always public because it has to be accessed by the runtime engine, the JVM. Commented Feb 28, 2013 at 18:48

lang-java

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