- What is public static void main?
- What is String  args?
- Can we override static method?
- What is the difference between static and final?
- What if I write static public void main instead of public static void main?
- Can we override public static void main?
- Why is main method static?
- Can we execute a program without main?
- What happens if you remove static modifier from the main method?
- What is private static void?
- What is private void?
- What does string  args mean?
- Can we have 2 main methods in Java?
- Can we declare constructor as final?
- Can we write private static void main Java?
- What is the difference between public static and void?
- Can we write static public void main String  args?
- Which declaration of the main method is valid?
What is public static void main?
The main() method is static so that JVM can invoke it without instantiating the class.
Void: It is a keyword and used to specify that a method doesn’t return anything.
As main() method doesn’t return anything, its return type is void.
As soon as the main() method terminates, the java program terminates too..
What is String  args?
Answered November 2, 2017. String args in Java is an array of strings which stores arguments passed by command line while starting a program. All the command line arguments are stored in that array.
Can we override static method?
Can we Override static methods in java? We can declare static methods with the same signature in the subclass, but it is not considered overriding as there won’t be any run-time polymorphism. Hence the answer is ‘No’.
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.
What if I write static public void main instead of public static void main?
If you write static public void instead of public static void then it is perfectly OK. Your Java program will compile and run successfully. … When a method’s return type is void it returns nothing. main : It is the name of the method, main method is searched by JVM as an entry point to start running the program.
Can we override public static void main?
You cannot override static methods and since the public static void main() method is static we cannot override it.
Why is main method static?
Why the main () method in Java is always static? 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. In any Java program, the main() method is the starting point from where compiler starts program execution.
Can we execute a program without main?
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.
What happens if you remove static modifier from the main method?
If you don’t add the ‘static’ modifier in your main method definition, the compilation of the program will go through without any issues but when you’ll try to execute it, a “NoSuchMethodError” error will be thrown.
What is private static void?
static : it is access modifier that means when the java program is load then it will create the space in memory automatically. void : it is a return type i.e it does not return any value. main() : it is a method or a function name.
What is private void?
Both create a void method (a method that does not return anything) But only the public method can be accessed by other classes. The private method can only be used by the class in which it is contained.
What does string  args mean?
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 have 2 main methods in Java?
A class can define multiple methods with the name main. The signature of these methods does not match the signature of the main method. These other methods with different signatures are not considered the “main” method. Yes it is possible to have two main() in the same program.
Can we declare constructor as final?
No, a constructor can’t be made final. A final method cannot be overridden by any subclasses. As mentioned previously, the final modifier prevents a method from being modified in a subclass.
Can we write private static void main Java?
Yes, we can declare the main method as private in Java. It compiles successfully without any errors but at the runtime, it says that the main method is not public.
What is the difference between public static and void?
public − This is the access specifier that states that the method can be accesses publically. static − Here, the object is not required to access static members. void − This states that the method doesn’t return any value.
Can we write static public void main String  args?
Java main method is the entry point of any java program. Its syntax is always public static void main(String args) . You can only change the name of String array argument, for example you can change args to myStringArgs . Also String array argument can be written as String…
Which declaration of the main method is valid?
thats why you need to specify string args or String… All these are valid/legal declarations of the main function in Java. The keywords public and static are interchangeable but mandatory. The parameter of the main method can take the var-args syntax.