In-class notes for 01/04/2018

CS 284 (MCA), Interim 2018

• Incoming background survey - due tonight "midnight"

• Read Graphics page in Java "text" area; then submit at least one reading question by tonight "midnight".

• Schedule plan

• First quiz tomorrow afternoon, 1pm; review questions in morning. Topics below

• This session: Lab 2: File I/O

Submitted questions on assignments and technology

Lab: File I/O in Java

• Example files FileCopy.java, FileCopyDriver.java

  • FileCopy.java

    • thoroughly checking all the things that can go wrong with file copy operations

    • abort() method for handling exceptions uniformly

  • FileCopyDriver.java

    • interactively obtaining file names

    • promoting to BufferedReader class, which offers a readLine() method returning a String

• PrintStream, the type of System.out (has print methods as well as inherited write methods)

• Flushing output (OutputStream.flush() or Reader.flush())

File I/O exercise

• File input/output, character conversions

Looking ahead

• Read Graphics page in Java "text" area; then submit at least one reading question by noon on next class meeting day

Installing React Native

To study for quiz

Java programming in Labs 1 and 2

• You may bring one side of one page of notes.

• Lab 1 topics include: exceptions (try/catch); reading integers from standard input using System.in, Integer.parseInt(), command-line arguments, object-oriented programming (e.g., static), Java syntax, etc.

• Lab 2 topics include basics of file I/O.

• Modify and identify elements of an example Java program, such as TryIO.java or CopyFile.java.

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