[OCAJP]main方法─程式進入點3

Given:

public class MainTest {

    public static void main(int[] args) {
        System.out.println("int main " + args[0]);
    }

    public static void main(Object[] args) {
        System.out.println("Object main " + args[0]);
    }

    public static void main(String[] args) {
        System.out.println("String main " + args[0]);
    }
}

and commands:

javac MainTest.java
java MainTest 1 2 3

What is the result?

int main 1

Object main 1

String main 1

D. Compilation fails
E. An exception is thrown at runtime

題解

程式進入點為「public static void main(String[] args)」或是「public static void main(String... args)」，因此這題會執行第11行的main方法。