import java.io.File;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import java.io.IOException;
import java.util.Scanner;

// This example illustrates opening a text file and reading lines one at a time
// and then storing the words in a String array. It also shows how to have scrollable
// output

public class Example3A {
    
    // The throws Exception clause is need when doing file I/O
    public Example3A() throws IOException {
        String[] words = getWordArray();
        String out = "The words are:\n";
        for(String word : words) {
            out += "   " + word + "\n";
        } // end for
        // The following area will have 25 rows and 40 columns for the output String out
        JTextArea outArea = new JTextArea(out,30,40);
        JOptionPane.showMessageDialog(null,new JScrollPane(outArea));
    } // end Example3A()
    
    public static void main(String[] args) throws IOException {
        new Example3A();
    } // end main
    
    // The throws Exception clause is need when doing file I/O
    String[] getWordArray() throws IOException {
        int size = 10;
        String[] words = new String[size];
        int total = 0;
        Scanner fileScanner = new Scanner(new File("src/Example3A.java"));
        while( fileScanner.hasNext() ) {
            if( total == words.length ) words = resize(words);
            // The default delimiters are the white space characters
            words[total] = fileScanner.next();
            total++;
        } // end while
        String[] returnArray = new String[total];
        for( int i = 0; i < total; i++ ) {
            returnArray[i] = words[i];
        } // end for
        return returnArray;
    } // end getWordArray
    
    String[] resize(String[] s) {
        String[] save = s;
        s = new String[2*save.length];
        for( int i = 0; i < save.length; i++ ) {
            s[i] = save[i];
        } // end for
        return s;
    }// end resize
    
} // end Example3A