Q. Which of these is a super class of wrappers Double and Float?

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Q. Which of the following methods return the value as a double?

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Q. Which of these methods can be used to check whether the given value is a number or not?

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Q. Which of these method of Double wrapper can be used to check whether a given value is infinite or not?

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Q. Which of these exceptions is thrown by compareTo() method defined in a double wrapper?

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Q. Which of these packages contain classes and interfaces used for input & output operations of a program?

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Q. Which of these class is not a member class of java.io package?

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Q. Which of these interface is not a member of java.io package?

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Q. Which of these class is not related to input and output stream in terms of functioning?

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Q. Which of these is specified by a File object?

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Q. Which of these is method for testing whether the specified element is a file or a directory?

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Q. Which of these class is used to read and write bytes in a file?

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Q. Which of these method of InputStream is used to read integer representation of next available byte input?

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Q. Which of these data type is returned by every method of OutputStream?

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Q. Which of these is a method to clear all the data present in output buffers?

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Q. Which of these method(s) is/are used for writing bytes to an outputstream?

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Q. Which of these stream contains the classes which can work on character stream?

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Q. Which of these class is used to read characters in a file?

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Q. Which of these method of FileReader class is used to read characters from a file?

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Q. Which of these class can be used to implement the input stream that uses a character array as the source?

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