Can I execute static block without main method in Java?

Yes, we can execute a java program without a main method by using a static block. Static block in Java is a group of statements that gets executed only once when the class is loaded into the memory by Java ClassLoader, It is also known as a static initialization block.

How do I run a static block only in Java?

The static block gets executed only once by JVM when the class is loaded into the memory by Java ClassLoader. The syntax to declare static block in Java program is as follows: Syntax: static { // Logic here or Java code. }

Why static block is executed before main method in Java?

Explanations: Static block of parent is executed first because it is loaded first and static blocks are called when the class is loaded.

When a static block is executed in Java?

Unlike C++, Java supports a special block, called a static block (also called static clause) that can be used for static initialization of a class. This code inside the static block is executed only once: the first time the class is loaded into memory.

Can we execute before main method?

Answer: No since JDK 1.7 it is not possible to execute any java class without main() method.

Is static block executed before Main?

In Java static block is used to initialize the static data members. Important point to note is that static block is executed before the main method at the time of class loading.

Are static methods executed only once?

3 Answers. Static initializer blocks are executed only once when the classloader loads the class. The time they’re executed is so bound to your application logic.

Which block will be executed first in Java?

Static block
Static block in java is executed before main method. If we declare a Static block in java class it is executed when class loads.

Which block will run first in Java program?

static blocks
Order of execution When you have all the three in one class, the static blocks are executed first, followed by constructors and then the instance methods.

Can we run TestNG class code without using any TestNG annotation?

So, you do not need to write main() method in a TestNG class to run it as TestNG takes care of that by defining annotations. You just need to provide proper annotations to methods and rest TestNG will execute them in a manner by implicit call to main method of TestNG class.