Which of the following is not used to create an object in Java?
A. By new keyword
B. By newInstance() method
C. By clone() method
D. By factory method etc.
E. By clear
Answer (2)
In Java, objects can be created using various methods like the new keyword, newInstance() , and factory methods. However, the clone() method only copies an existing object and does not create a new one. Therefore, the correct answer to the question of which option does not create an object is E. By clear.
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To determine which option is not used to create an object in Java, let's look at each option one by one:
By new keyword : In Java, the new keyword is the most common way to create a new object. It allocates memory for the object and calls its constructor. For example, MyClass obj = new MyClass(); creates a new object of MyClass.
By newInstance() method : The newInstance() method is a reflection-based method that can be used to create objects at runtime. It's available in the Class class. However, its use is discouraged because it can lead to security and maintenance issues.
By clone() method : The clone() method is a part of the Cloneable interface in Java. When a class implements Cloneable, objects can be created by copying the attributes of an existing object to a new one.
By factory method : A factory method is a design pattern that uses methods to create objects. These are not native to Java itself, but rather a way to organize object creation code, often used for more complex object creation scenarios.
By clear : There is no method named clear that is used for creating objects in Java. This option is incorrect and does not generate or instantiate a new object.
After analyzing all the options, the correct answer is (E) By clear . This method does not exist for object creation in Java.
