Input Output — Part 1 MCQs with Explanations

A newLine() method is provided in BufferedWriter which is not in FileWriter.

The class BufferedOutputStream in Java contains methods that are used to write data into a file. It provides buffering for output streams, which helps to improve efficiency by reducing the number of write operations to the underlying file.

The Java program provided uses the AWT and Applet classes to draw a string on the screen using the paint() method. However, it does not explicitly specify the size (length or width) of the application box (applet window). When an applet does not set its size using methods like setSize() , the actual size of the applet is determined by the HTML page that embeds the applet or by the applet viewer or browser displaying it. Because different systems and viewers may allocate different default sizes, the length of the application box is therefore system dependent .

Scanner is the correct answer to “Which class is used to read data from the keyboard in Java”. This question is standard in competitive examination syllabi for Input Output.

It prints data to the standard output stream followed by a newline is the correct answer to “What is the purpose of the `System.out.println()` method in Java”. This question is standard in competitive examination syllabi for Input Output.

write() is the correct answer to “Which method is used to write data to a file in Java”. This question is standard in competitive examination syllabi for Input Output.

By using the `close()` method of the file stream is the correct answer to “How can you close a file after reading or writing in Java”. This question is standard in competitive examination syllabi for Input Output.

It is used to read data from a file is the correct answer to “What is the purpose of the `FileInputStream` class in Java”. This question is standard in competitive examination syllabi for Input Output.

FileReader is the correct answer to “Which class is used to read data from a file in Java”. This question is standard in competitive examination syllabi for Input Output.

It is used to read data from a file efficiently is the correct answer to “What is the purpose of the `BufferedReader` class in Java”. This question is standard in competitive examination syllabi for Input Output.

`readLine()` is the correct answer to “Which method is used to read a line of text from the keyboard in Java”. This question is standard in competitive examination syllabi for Input Output.

It is used to write data to a file is the correct answer to “In Java, what does the `FileOutputStream` class do”. This question is standard in competitive examination syllabi for Input Output.

It is used to write formatted text to a file is the correct answer to “What is the purpose of the `PrintWriter` class in Java”. This question is standard in competitive examination syllabi for Input Output.

`FileOutputStream` is the correct answer to “Which class is used to write binary data to a file in Java”. This question is standard in competitive examination syllabi for Input Output.

`write()` is the correct answer to “In Java, which method is used to write binary data to a file”. This question is standard in competitive examination syllabi for Input Output.

It is used to write character data to a file is the correct answer to “What is the purpose of the `FileWriter` class in Java”. This question is standard in competitive examination syllabi for Input Output.

`PrintWriter` is the correct answer to “Which class is used to write formatted text to a file in Java”. This question is standard in competitive examination syllabi for Input Output.

It is used to read primitive data types from an input stream is the correct answer to “In Java, what is the primary purpose of the `DataInputStream` class”. This question is standard in competitive examination syllabi for Input Output.

It is used to write primitive data types to an output stream is the correct answer to “In Java, what does the `DataOutputStream` class do”. This question is standard in competitive examination syllabi for Input Output.

`DataOutputStream` is the correct answer to “Which class is used to write primitive data types to an output stream in Java”. This question is standard in competitive examination syllabi for Input Output.

It allows reading and writing at random positions in a file is the correct answer to “What is the purpose of the `RandomAccessFile` class in Java”. This question is standard in competitive examination syllabi for Input Output.

`Reader` and `Writer` classes is the correct answer to “In Java, which class is used to read and write character streams”. This question is standard in competitive examination syllabi for Input Output.

It represents a file or directory pathname is the correct answer to “What is the primary purpose of the `File` class in Java”. This question is standard in competitive examination syllabi for Input Output.

By using the `exists()` method is the correct answer to “In Java, how can you check if a file or directory exists using the `File` class”. This question is standard in competitive examination syllabi for Input Output.

`delete()` is the correct answer to “Which method is used to delete a file or directory in Java”. This question is standard in competitive examination syllabi for Input Output.

It represents the platform-specific file separator (e.g., `/` or ``) is the correct answer to “In Java, what is the purpose of the `File.separator` constant”. This question is standard in competitive examination syllabi for Input Output.

Character streams are used for reading and writing text data, while byte streams are used for reading and writing binary data is the correct answer to “What is the difference between character streams and byte streams in Java”. This question is standard in competitive examination syllabi for Input Output.

It is used to write character data to a file efficiently is the correct answer to “In Java, what is the purpose of the `BufferedWriter` class”. This question is standard in competitive examination syllabi for Input Output.

`InputStreamReader` is the correct answer to “Which class is used for reading character streams in a platform-independent way in Java”. This question is standard in competitive examination syllabi for Input Output.

It is used to write formatted text to an output stream is the correct answer to “In Java, what is the primary purpose of the `PrintStream` class”. This question is standard in competitive examination syllabi for Input Output.

Reading character streams use `Reader` classes, while writing character streams use `Writer` classes is the correct answer to “What is the difference between reading and writing character streams in Java”. This question is standard in competitive examination syllabi for Input Output.

`DataInputStream` is the correct answer to “In Java, which class is used to read binary data from an input stream”. This question is standard in competitive examination syllabi for Input Output.

It provides methods for reading and writing character-based console input and output is the correct answer to “What is the purpose of the `Console` class in Java”. This question is standard in competitive examination syllabi for Input Output.

java.lang package is the correct answer to “System class is defined in .................”. This question is standard in competitive examination syllabi for Input Output.

A and C is the correct answer to “Which of these classes defined in java.io and used for file-handling are abstract? A. InputStream B. PrintStream C. Reader D. FileInputStream E. FileWriter”. This question is standard in competitive examination syllabi for Input Output.

Abstract Window Toolkit is the correct answer to “What does AWT stands for”. This question is standard in competitive examination syllabi for Input Output.

streams is the correct answer to “Which of these is used to perform all input & output operations in Java”. This question is standard in competitive examination syllabi for Input Output.

Byte stream is the correct answer to “Which of these is a type of stream in Java”. This question is standard in competitive examination syllabi for Input Output.

Writer is the correct answer to “Which of these classes are used by character streams for input and output operations”. This question is standard in competitive examination syllabi for Input Output.

ByteArrayInputStream is the correct answer to “Which of these class is used to read from byte array”. This question is standard in competitive examination syllabi for Input Output.