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// An input/output test for JSwat.
// $Id: iotest.java 1100 2003-12-17 00:51:48Z nfiedler $
import java.io.*;
/**
* Class iotest tests I/O related stuff.
*
* @author Nathan Fiedler
*/
public class iotest {
/**
* Opens the named file, then closes it. Waits for the user
* before returning.
*
* @param f file to open.
*/
protected static void openFileTest(String f) {
try {
File file = new File(f);
System.out.println("Opening file " + file.getCanonicalPath());
FileInputStream fis = new FileInputStream(file);
int i = fis.read();
System.out.println("Read one byte from file.");
fis.close();
System.out.println("Closed the file input stream.");
System.out.println("Press Enter to continue...");
InputStreamReader isr = new InputStreamReader(System.in);
BufferedReader br = new BufferedReader(isr);
br.readLine();
} catch (IOException ioe) {
ioe.printStackTrace();
}
} // openFileTest
/**
* As the user for their name and then print it out a number of times.
*/
protected static void inputTest() {
System.out.print("Enter ");
System.out.print("your ");
System.out.print("name: ");
InputStreamReader isr = new InputStreamReader(System.in);
BufferedReader br = new BufferedReader(isr);
try {
String name = br.readLine();
for (int i = 0; i < 10; i++) {
System.out.println(i + ": Hello " + name + '!');
}
} catch (IOException ioe) {
ioe.printStackTrace();
}
} // inputTest
/**
* Displays the various 'path' values from File.
*/
public static void filepaths() {
File f = new File(".", "file.java");
// Using new File("./file.java") works exactly the same.
System.out.println("getName(): " + f.getName());
// file.java
System.out.println("getPath(): " + f.getPath());
// ./file.java
System.out.println("getAbsolutePath(): " + f.getAbsolutePath());
// /home/me/java/./file.java
try {
System.out.println("getCanonicalPath(): " + f.getCanonicalPath());
} catch (IOException ioe) {
ioe.printStackTrace();
}
// /home/me/java/file.java
System.out.println("getParent(): " + f.getParent());
// .
}
/**
* Tests both input and output.
*/
public static void main(String[] args) {
if (args.length > 0) {
openFileTest(args[0]);
} else {
inputTest();
}
filepaths();
} // main
} // iotest
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