- Can we execute a program without main?
- What is method hiding?
- Can we override final method?
- What is String  args?
- What happens if I remove static from main method?
- Which method Cannot be overridden?
- Why is main method static?
- How data hiding is achieved in oops?
- Why can we not override static method?
- How do I call a non static method from the main method?
- Why can’t static method access non static fields?
- How do I call a non static method from a static method in C++?
- What is data hiding and method hiding in Java?
- Can non static method call static method?
- Can we override main method?
- Can we override private method?
- What is C++ hiding method?
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 is method hiding?
Method hiding means subclass has defined a class method with the same signature as a class method in the superclass. In that case the method of superclass is hidden by the subclass. It signifies that : The version of a method that is executed will NOT be determined by the object that is used to invoke it.
Can we override final method?
You can declare some or all of a class’s methods final. You use the final keyword in a method declaration to indicate that the method cannot be overridden by subclasses.
What is String  args?
The String args parameter is an array of Strings passed as parameters when you are running your application through command line in the OS. … String args means an array of sequence of characters (Strings) that are passed to the “main” function. This happens when a program is executed.
What happens if I remove static from main method?
That’s why the main method has to be static so that JVM can load the class into memory and call the main method. If the main method won’t be static, JVM would not be able to call it because there is no object of the class is present. Let’s see what happens when we remove static from java main method.
Which method Cannot be overridden?
A method declared final cannot be overridden. A method declared static cannot be overridden but can be re-declared. If a method cannot be inherited, then it cannot be overridden. A subclass within the same package as the instance’s superclass can override any superclass method that is not declared private or final.
Why is main method 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. … Static method of a class can be called by using the class name only without creating an object of a class.
How data hiding is achieved in oops?
Data hiding is a software development technique specifically used in object-oriented programming (OOP) to hide internal object details (data members). Data hiding ensures exclusive data access to class members and protects object integrity by preventing unintended or intended changes.
Why can we not 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).
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.
Why can’t static method access non static fields?
Non-static variables are part of the objects themselves. To use a non-static variable, you need to specify which instance of the class the variable belongs to. … In other words, non-static data cannot be used in static methods because there is no well-defined variable to operate on.
How do I call a non static method from a static method in C++?
A static method provides NO reference to an instance of its class (it is a class method) hence, no, you cannot call a non-static method inside a static one. Create an object of the class inside the static method and then call the non-static method using such an object.
What is data hiding and method hiding in Java?
Java 8Object Oriented ProgrammingProgramming. When super class and sub class contains same method including parameters and if they are static. The method in the super class will be hidden by the one that is in the sub class. This mechanism is known as method hiding.
Can non static method call static method?
“Can a non-static method access a static variable or call a static method” is one of the frequently asked questions on the static modifier in Java, the answer is, Yes, a non-static method can access a static variable or call a static method in Java.
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 we override private method?
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.
What is C++ hiding method?
In Method Hiding, you can hide the implementation of the methods of a base class from the derived class using the new keyword. Or in other words, in method hiding, you can redefine the method of the base class in the derived class by using the new keyword.