Java IO Fundamentals Quiz

What is a Stream in Java?

• C. A data structure used to hold elements

• B. A type of loop in Java

• A. A flow of data from a source to a destination

• D. A type of variable in Java

Which class initiates the flow of data in Java streams?

• D. End-Point Stream

• A. Source Stream

• B. Sink Stream

• C. Node Stream

What are the sources called in Java streams?

• B. Output Streams

• A. Input Streams

• D. End-Point Streams

• C. Node Streams

Which type of data do Byte Streams handle?

• C. Integer data

• B. Non-Unicode data

• D. Floating point data

• A. Unicode data

What concept does Java use to create complex I/O processing?

• D. Polymorphism

• C. Inheritance

• B. Chaining Streams

• A. Looping

Which class is used to accept inputs using BufferedReader and InputStreamReader?

• C. InputStreamReader

• B. FileWriter

• D. BufferedReader

• A. FileReader

What method is used to format output in Java?

• D. Integer.toString()

• A. String.parse()

• B. System.out.println()

• C. String.format()

What does the File class represent in Java?

• A. Directories

• B. Files

• C. Streams

• D. Objects

Which interface is the root interface in the Java collection hierarchy?

• D. Map

• C. Collection

• B. List

• A. Set

What does the Set interface in Java represent?

• C. A collection with unique elements

• B. A collection with duplicate elements

• D. A collection with null elements

• A. An ordered collection