University:
California State University, Northridge
Course:
COMP 110 | Introduction to Algorithms and Programming and Lab
Academic year:

2023
Views:

349

Pages:

11
Author:

Samuel K

Quiz 7Due Oct 21, 2023 at 11:45amPoints 40Questions 20Time Limit 75 MinutesQuestion 12 ptsWhat is the primary purpose of file I/O in Java?To create filesTo format text.To read from and write to filesTo execute files Question 22 ptsWhich class is commonly used for reading text from a file in Java?FileReaderFileInputTextReaderInputStreamQuestion 32 ptsIn Java, what is the purpose of the 'BufferedReader' class whenreading from a file?To read binary dataTo buffer input, improving efficiencyTo convert text to uppercaseTo skip lines in the file Question 42 ptsWhich method is used to write text to a file in Java?writeText()print()writeFile()write()Question 52 ptsWhat is the purpose of the 'FileWriter' class in Java?To read binary dataTo buffer inputTo write text to a fileTo create directories Question 62 ptsWhich class should be used for reading binary data from a file inJava?FileReaderDataReaderBinaryReaderFileInputStreamQuestion 72 ptsWhat is the purpose of the "ObjectOutputStream" class in Java?To write primitive data typesTo serialize objectsTo read text filesTo encrypt files Question 82 ptsWhich method is used to read an object from a file in Java?readObject()getObject()read()deserialize()Question 92 ptsWhat is the purpose of the 'Serializable' interface in Java?To indicate that a class can be used as a fileTo indicate that a class's objects can be converted into a bytestreamTo define file permissionsTo indicate that a class is final Question 102 ptsIn Java, which exception is thrown when attempting to read from anon-existent file?.FileNotFoundExceptionIOExceptionFileNotAccessibleExceptionFileReadExceptionQuestion 112 ptsWhat is the purpose of the "BufferedWriter" class in Java?To read binary dataTo buffer output, improving efficiencyTo convert text to uppercaseTo skip lines in the file Question 122 ptsWhich method is used to close a file in Java after reading or writing?closeFile()endFile()finishFile()close()Question 132 ptsWhat is the purpose of the 'FileInputStream" class in Java?To read binary dataTo buffer inputTo read text filesTo create directories Question 142 ptsIn Java, which method is used to check if a file exists?fileExists()exists()checkFile()isFileExist()Question 152 ptsWhat is the purpose of the 'File' class in Java?To read binary dataTo buffer inputTo represent files and directoriesTo write text to a file Question 162 ptsIn Java, which method is used to write an object to a file?serializeObject()saveObject()writeObject()objectToFile()Question 172 ptsWhat is the purpose of the "RandomAccessFile' class in Java?To read binary dataTo buffer input.To read and write files randomlyTo encrypt files Question 182 ptsIn Java, how are objects serialized?By default, all objects are serializedBy implementing the "Serializable" interfaceBy using a special "Serialize" classObjects cannot be serialized in JavaQuestion 192 ptsWhat is the purpose of the "DatalnputStream" class in Java?To read binary dataTo buffer inputTo read text filesTo create directories Question 202 ptsWhat is the role of the 'transient' keyword in Java serialization?It marks a field as non-serializableIt ensures fast serializationIt indicates a field that should not be deserializedIt is used to define transient classes