Is it always necessary to create objects of a class in Java?

Answer: No, it is not always necessary to create objects of a class in Java. Java provides some features that allow the user to access the members of a class without creating an object of that class.

One of the ways to access the members of a class without creating an object is by using the static keyword. When a member is declared static in a class, it can be accessed using the class name without creating an object of that class. 

Code example:

public class Example {

public static void printMessage() {

System.out.println("Hello, world!");

}

}

Example.printMessage(); // prints "Hello, world!"

Another way to access the members of a class without creating an object is by using inner classes. Inner classes are classes that are defined inside another class. They have access to the members of the enclosing class, even if they are private. 

Code example:

public class Example {

private int value;

public Example(int value) {

this.value = value;

}

public void printValue() {

InnerClass inner = new InnerClass();

inner.printValue();

}

private class InnerClass {

public void printValue() {

System.out.println(value);

}

}

}

Example example = new Example(42);

example.printValue(); // prints "42"

Extra Information:

It is important to note that while it is possible to access the members of a class without creating an object, it is generally not recommended. Object-oriented programming relies on creating objects and interacting with them through their methods and properties. Accessing members without creating an object can lead to code that is more difficult to maintain and understand.