Question

Which design pattern ensures that only one object of particular class gets created? (a) Singleton pattern (b) Filter pattern (c) State pattern (d) Bridge pattern This question was addressed to me during an interview. Query is from Design Patterns topic in section Java Beans & JDBC of Java Select the correct answer from above options JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

Right answer is (a) Singleton pattern To elaborate: Singleton pattern involves a single class which is responsible to create an object while making sure that only one object gets created. This class provides a way to access the only object which can be accessed directly without need to instantiate another object of the same class.