Quick Answer: Can We Create Multiple Classes In Java?

Can two methods in the same class have the same name?

Having two or more methods named the same in the same class is called overloading.

Two methods may share the same name, provided the number of parameters are different, or if they both have the same parameters, then there is at least one position, i where the parameter types differ..

How do you create multiple classes in Java?

Yes it can,but there can only be 1 public class inside any package as java compiler creates the . Class file which is of the same name as the Public class name therefore if their are more than 1 public class it would be difficult to select for compiler that what should be the name of Class file.

Can we have 2 main methods in Java?

Yes, you can have as many main methods as you like. You can have main methods with different signatures from main(String[]) which is called overloading, and the JVM will ignore those main methods.

Can you extend main method in Java?

Short answer is NO,we can not override main method in java. Reason is very simple.As main method is static and we know very well that we can not override static methods in Java,hence main method could not be overridden. … But as we can see in output ,in both calls ,main method of Application class is called.

What is diamond problem in Java?

Then, if you call the demo() method using the object of the subclass compiler faces an ambiguous situation not knowing which method to call. This issue is known as diamond problem in Java. Due to this Java does not support multiple inheritance i.e., you cannot extend more than one other class.

Why pointers are not used in Java?

Some reasons for Java does not support Pointers: Java has a robust security model and disallows pointer arithmetic for the same reason. … No pointer support make Java more secure because they point to memory location or used for memory management that loses the security as we use them directly.

Which advantages we lose by using multiple inheritance?

Which of the following advantages we lose by using multiple inheritances? Explanation: The benefit of dynamic binding and polymorphism is that they help making the code easier to extend but by multiple inheritance it makes harder to track.

Can we declare constructor as private?

Yes, we can declare a constructor as private. If we declare a constructor as private we are not able to create an object of a class. We can use this private constructor in the Singleton Design Pattern.

Can a class have multiple methods?

Yes, we can define multiple methods in a class with the same name but with different types of parameters. Which method is to get invoked will depend upon the parameters passed. … Depending on the parameters, the appropriate method will be called.

What is multiple classes in Java?

A Java program may contain any number of classes. The following program comprises of two classes: Computer and Laptop, both the classes have their constructors and a method. In the main method, we create objects of two classes and call their methods.

Can we create two main methods in single class?

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.

Which language does not support all 4 types of inheritance?

JavaWhich language does not support all 4 types of inheritance? Explanation: Java doesn’t support all 4 types of inheritance. It doesn’t support multiple inheritance. But the multiple inheritance can be implemented using interfaces in Java.

Can main method be overloaded?

Yes, we can overload the main method in Java, but When we execute the class JVM starts execution with public static void main(String[] args) method.