This is sort of like cheating the Java runtime. Ideally, I believe, starting Java 1.6, you cannot execute Java programs without a standard main method. Prior to that, only the static block was sufficient.
You actually do not have to create an instance of the file, but a skeletal main method is required.
public class JavaFileWithEmptyMain{
//static block - No class instance needed
static
{
System.out.println("In static block");
String staticVariable = "Variable in static block";
System.out.println("Value of staticVariable: " + staticVariable);
}
public static void main(String args[])
{
// No implementation - empty
}
}
/*
Expected output:
Case 1: When the main method does not exists or commented.
[root@mypc]# java JavaFileWithEmptyMain
Error: Main method not found in class JavaFileWithEmptyMain, please define the m
ain method as:
public static void main(String[] args)
or a JavaFX application class must extend javafx.application.Application
Case 2: As per the above code
[root@mypc]# java JavaFileWithEmptyMain
In static block
Value of staticVariable: Variable in static block
*/
