Input/Output and Exception Handling - Java Concepts

Java Reference

In-Depth Information

exists

java.io.FileNotFoundException

java.io.FileReader

java.io.IOException

java.io.PrintWriter

close

print

println

java.lang.Error

java.lang.IllegalArgumentException

java.lang.IllegalStateException

java.lang.NullPointerException

java.lang.NumberFormatException

java.lang.RuntimeException

java.lang.Throwable

getMessage

printStackTrace

java.util.InputMismatchException

java.util.NoSuchElementException

java.util.Scanner

close

javax.swing.JFileChooser

getSelectedFile

showOpenDialog

showSaveDialog

REVIEW EXERCISES

΢΢ Exercise R11.1. What happens if you try to open a file for reading that

doesn't exist?

What happens if you try to open a file for writing that doesn't exist?

΢΢΢ Exercise R11.2. What happens if you try to open a file for writing, but

the file or device is write-protected (sometimes called read-only)? Try it

out with a short test program.

΢

Exercise R11.3. How do you open a file whose name contains a backslash,

like c:\temp\output.dat ?

΢΢΢ Exercise R11.4. What is a command line? How can a program read its

command line arguments?

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