- Why main method is static can we execute a program without main () method if yes how?
- Why we Cannot override static method?
- Can we override main method?
- Can a program run without main in C++?
- Why does main method have String args?
- Why we use static in main method?
- What is the difference between static and final?
- Can we have main method in interface?
- Can a program run without main () in C?
- What is the difference between String  args and String args ?
- What does args stand for?
- Can we override the static methods?
- Can main method be private and non static?
- What is String  args?
- Can we override the final method?
- Can we call static method in non static method?
- Can we override static and private method in Java?
- How do I call a non static method from the main method?
Why main method is static can we execute a program without main () method if yes how?
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..
Why we Cannot override static method?
Static methods cannot be overridden because they are not dispatched on the object instance at runtime. The compiler decides which method gets called. Static methods can be overloaded (meaning that you can have the same method name for several methods as long as they have different parameter types).
Can we override main method?
No, we cannot override main method of java because a static method cannot be overridden. The static method in java is associated with class whereas the non-static method is associated with an object.
Can a program run without main in C++?
No you cannot unless you are writing a program in a freestanding environment (embedded environment OS kernel etc.) where the starting point need not be main() . As per the C++ standard main() is the starting point of any program in a hosted environment .
Why does main method have String args?
Since the main method is the entry point of the Java program, whenever you execute one the JVM searches for the main method, which is public, static, with return type void, and a String array as an argument. If anything is missing the JVM raises an error.
Why we use static in main method?
Java main() method is always static, so that compiler can call it without the creation of an object or before the creation of an object of the class. … Static method of a class can be called by using the class name only without creating an object of a class.
What is the difference between static and final?
static means there is only one copy of the variable in memory shared by all instances of the class. The final keyword just means the value can’t be changed. Without final , any object can change the value of the variable.
Can we have main method in interface?
Answer : Yes, we can provide different implementation of main() declared in an interface and classes implementing that interface by overriding method and can overload static main method if defined in an interface. Some more information regarding interface changes in Java 8.
Can a program run without main () in C?
So actually C program can never run without a main() . We are just disguising the main() with the preprocessor, but actually there exists a hidden main function in the program.
What is the difference between String  args and String args ?
There’s no difference, but putting the brackets after the type ( String ) is the more common practice in Java. Both of them are absolutely the same. … String args or String args will create an array (reserves a place in memory)with no size and name args.
What does args stand for?
$args stands for “arguments” and variables are values given that represent something else. It’s normally used to pass along these values faster and cleaner.
Can we override the static methods?
Can we override a static method? No, we cannot override static methods because method overriding is based on dynamic binding at runtime and the static methods are bonded using static binding at compile time. So, we cannot override static methods.
Can main method be private and non static?
Main method is always static because non-static members or methods should not be called with the class name directly i.e. these can be called after creating the object whereas main method can be called directly using the class name. void indicates that the main() method is declared does not return a value.
What is String  args?
String args means an array of sequence of characters (Strings) that are passed to the “main” function. This happens when a program is executed. Example when you execute a Java program via the command line: java MyProgram This is just a test.
Can we override the final method?
A final method in a superclass cannot be overridden in a subclass—this guarantees that the final method implementation will be used by all direct and indirect subclasses in the hierarchy. Methods that are declared private are implicitly final , because it’s not possible to override them in a subclass.
Can we call static method in non static method?
It is a method which belongs to the class and not to the object(instance). A static method can access only static data. It cannot access non-static data (instance variables). A static method can call only other static methods and can not call a non-static method from it.
Can we override static and private method in Java?
No, we cannot override private or static methods in Java. Private methods in Java are not visible to any other class which limits their scope to the class in which they are declared.
How do I call a non static method from the main method?
If you need to call a non-static member from it, simply put your main code in a class and then from main create a new object of your newly created class.