Quiz for Scanner and PrintWriter

Q1: Which package contains the Scanner and PrintWriter classes?

A. java.io B. java.util C. java.nio D. java.text

Q2: What is the purpose of the Scanner class in Java?

A. Reading character streams B. Writing binary data C. Reading input from various sources D. Writing input to console

Q3: Which method of Scanner reads a full line of input?

A. nextLine() B. readLine() C. read() D. line()

Q4: Which method of Scanner checks if another token exists?

A. hasNext() B. isNext() C. nextExists() D. checkNext()

Q5: How do you create a Scanner to read from a file?

A. new Scanner(FileReader) B. new Scanner(File) C. new Scanner(InputStreamReader) D. new Scanner(FileInputStream)

Q6: What is the default delimiter used by Scanner?

A. Comma B. Tab C. Whitespace D. Newline

Q7: Which class is used to write formatted output to files?

A. FileWriter B. PrintWriter C. BufferedWriter D. Scanner

Q8: What method is used to write a string in PrintWriter?

A. print() B. writeString() C. printString() D. appendLine()

Q9: Which PrintWriter method adds a new line automatically?

A. print() B. append() C. writeLine() D. println()

Q10: What should you do after using a Scanner or PrintWriter?

A. Set it to null B. Flush it C. Call close() D. Nothing