JAVA Interview Questions and Answers

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Q: Which of the following is not a loop in Java?

asked May 12 in JAVA by rahuljain1

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Q: What is the output of the following code snippet?

asked May 12 in JAVA by rahuljain1

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Q: What is the purpose of the ‘this’ keyword in Java?

asked May 12 in JAVA by rahuljain1

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Q: What is the difference between a class and an object in Java?

asked May 12 in JAVA by rahuljain1

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Q: Which of the following is not a valid access modifier in Java?

asked May 12 in JAVA by rahuljain1

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Q: Which of the following is an example of a checked exception in Java?

asked May 12 in JAVA by rahuljain1

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Q: Which of the following is an example of an unchecked exception in Java?

asked May 12 in JAVA by rahuljain1

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Q: What is the default value of a boolean variable in Java?

asked May 9 in JAVA by rahuljain1

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Q: What is the purpose of the ‘final’ keyword in Java?

asked May 9 in JAVA by rahuljain1

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Q: Which of the following is not a primitive data type in Java?

asked May 9 in JAVA by rahuljain1

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Q: What is the major feature added in Java 10?

asked May 9 in JAVA by rahuljain1

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Q: Which method is used to convert a String to a Double-object in Java?

asked May 9 in JAVA by rahuljain1

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Q: Which method is used to convert a String to a double in Java?

asked May 9 in JAVA by rahuljain1

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Q: Which method is used to convert a String to an Integer object in Java?

asked May 9 in JAVA by rahuljain1

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Q: Which method is used to convert a String to an int in Java?

asked May 9 in JAVA by rahuljain1

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Q: Which class is used to represent an HTTPS connection in Java?

asked May 9 in JAVA by rahuljain1

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Q: Which class is used to send HTTP requests and receive HTTP responses in Java?

asked May 9 in JAVA by rahuljain1

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Q: Which class is used to represent a connection to a URL in Java?

asked May 9 in JAVA by rahuljain1

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Q: Which class is used to represent an HTTP connection in Java?

asked May 9 in JAVA by rahuljain1

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Q: Which method is used to read a line of text from the standard input in Java?

asked May 9 in JAVA by rahuljain1

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Q: Which class is used to represent a CompletableFuture in Java?

asked May 9 in JAVA by rahuljain1

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Q: Which interface is used to represent the result of an asynchronous computation in Java?

asked May 8 in JAVA by rahuljain1

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Q: Which class is used to represent a thread pool that can schedule tasks for execution at a fixed rate in Java?

asked May 8 in JAVA by rahuljain1

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Q: Which interface is used to schedule a task for execution at a fixed rate in Java?

asked May 8 in JAVA by rahuljain1

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Q: Which class is used to schedule a task for execution after a specified delay in Java?

asked May 8 in JAVA by rahuljain1

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Q: Which interface is used to execute a task asynchronously and return a result in Java?

asked May 8 in JAVA by rahuljain1

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Q: Which class is used to execute a task asynchronously in Java?

asked May 8 in JAVA by rahuljain1

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Q: Which interface is used to create a thread in Java?

asked May 8 in JAVA by rahuljain1

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Q: Which class is used to create a thread in Java?

asked May 8 in JAVA by Robindeniel

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Q: Which class is used to represent a multicast socket for communication between multiple computers over a network in Java?

asked May 8 in JAVA by Robindeniel

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