Can a class be private or protected in Java?

Why can’t we make a class private in Java?

Making a class private does not make any sense as we can not access the code of its class from the outside. There would be no way to access that class or its members. This needs a simple understanding of why it is not required to declare classes as private in Java.

Can you access a private class in Java?

Private: The private access modifier is specified using the keyword private. The methods or data members declared as private are accessible only within the class in which they are declared. Any other class of the same package will not be able to access these members.

Are all classes public in Java?

Public members are visible to all other classes. This means that any other class can access a public field or method. Further, other classes can modify public fields unless the field is declared as final .

Can the outer class be protected?

Why an outer class can not be protected

default → only accessible within the same package. protected → accessible within the same package as well as outside of the package in child classes through inheritance only. … So again there is no benefit of defining a class protected.

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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 we override private method in java?

1) In Java, inner Class is allowed to access private data members of outer class. … 2) In Java, methods declared as private can never be overridden, they are in-fact bounded during compile time.

Can we access private method?

You can access the private methods of a class using java reflection package. … reflect package by passing the method name of the method which is declared private. Step2 − Set the method accessible by passing value true to the setAccessible() method. Step3 − Finally, invoke the method using the invoke() method.

What is private keyword in java?

The private keyword is an access modifier used for attributes, methods and constructors, making them only accessible within the declared class.

Can we create object for private class?

1 Answer. yes. private is an access modifier, as you might have learned that restricts member to be access just within declaring scope. So as a member of another class , private class can be accessed in that class only.

Is Main a keyword in Java?

main: It is the name of Java main method. It is the identifier that the JVM looks for as the starting point of the java program. It’s not a keyword.

Is overriding possible in Java?

In Java, methods are virtual by default. We can have multilevel method-overriding. Overriding vs Overloading : … Overriding is about same method, same signature but different classes connected through inheritance.

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What is the difference between private and protected in Java?

The private modifier specifies that the member can only be accessed in its own class. The protected modifier specifies that the member can only be accessed within its own package (as with package-private) and, in addition, by a subclass of its class in another package.

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