If you put a System.exit(0)
at the end of the static
-block, it will run with no errors in Java 6 and below (without a valid main
!). This is because the static
block is executed before a valid main
method is searched for, so if you exit the program at the end of the static block, you will receive no errors.
However, this behavior was changed in Java 7; now you must include an explicit main
, even if it might never be reached.
In Java 7, the answer to the question is false, but in Java 6 and below the answer is indeed true.
public class Test {
static {
System.out.println("Hello World");
System.exit(0);
}
}
Java 6:
Hello World
Java 7:
Error: Main method not found in class Test, please define the main method as:
public static void main(String[] args)
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