import java.awt.HeadlessException;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.LinkedList;
import java.util.Scanner;
import javax.swing.JOptionPane;
public class Dictionary {
private String fileName;
private Collection<String> words;
private long elapsedTime;
public Dictionary(String fileName) { this.fileName = fileName; }
public void loadDictionary(Collection<String> words) throws FileNotFoundException{
this.words = words;
Scanner input = new Scanner(new File(fileName));
long startTime = System.currentTimeMillis();
while(input.hasNext()){
String word = input.nextLine();
words.add(word);
}
input.close();
elapsedTime = System.currentTimeMillis() - startTime;
System.out.printf("%s build time in %s collection: %.2f seconds \n",
fileName, words.getClass().getName(), (double) elapsedTime / 1000.0);
}
public void display(){
System.out.printf("Contents of %s, organized using %s: \n",
fileName, words.getClass().getName());
int wordCount = 0;
for(String word : words){
System.out.print(word + " ");
if(++wordCount % 20 == 0){ // new line every 20 words
System.out.println();
}
}
System.out.printf("\nCollection: %s Elapse Time:%.2f Word Count: %d\n",
words.getClass().getName(), (double)elapsedTime / 1000.0, wordCount);
JOptionPane.showMessageDialog(null, "Make note of the results, then click OK to continue...");
}
public static void main(String[] args){
try{
String fileName = JOptionPane.showInputDialog("Dictionary file name: ");
Dictionary test = new Dictionary(fileName);
test.loadDictionary(new LinkedList<String>());
test.display();
test.loadDictionary(new ArrayList<String>());
test.display();
}
catch(HeadlessException e){ // can be generated by JOptionPane.showInputDialog()
e.printStackTrace();
}
catch(FileNotFoundException e){
System.out.println("File not found");
}
}
}