Question

1.Read from a file that contains a paragraph of words. Put all the words in an array, put the valid words (words that have only letters) in a second array, and put the invalid words in a third array. Sort the array of valid words using Selection Sort. Create a GUI to display the arrays using a GridLayout with one row and three columns. 

2.The input file Each 
line of the input file will contain a sentence with words separated by one space. Read a line from the file and use a StringTokenizer to extract the words from the line. An example of the input file would be: 

Mary had a little lamb
whose fl33ce was white as sn0w
And everywhere that @Mary went
the 1amb was sure to go. 

3.You should have two files to submit for this project: 
Project1.java 
WordGUI.java

4. simple Java project

5. All variables have descriptive names or comments describing their purpose.

Thank you！

Answer 1

PLEASE GIVE IT A THUMBS UP, I SERIOUSLY NEED ONE, IF YOU NEED ANY MODIFICATION THEN LET ME KNOW, I WILL DO IT FOR YOU

Output:

input.txt

Mary had a little lamb
whose fl33ce was white as sn0w
And everywhere that @Mary went
the 1amb was sure to go.

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Project.java

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.StringTokenizer;

class Project1 {

  public static void main(String args[]) {
    File file = null;
    FileReader fr = null;
    BufferedReader br = null;
    String line;
    StringTokenizer st = null;

    int numberOfWordsInFile;

    String words[];
    int index;

    String validWords[];
    int validWordsIndex;

    String invalidWords[];
    int invalidWordsIndex;
    try {
      file = new File("input.txt");
      fr = new FileReader(file);
      br = new BufferedReader(fr);
      numberOfWordsInFile = 22;
      words = new String[numberOfWordsInFile];
      index = 0;
      while ((line = br.readLine()) != null) {
        st = new StringTokenizer(line);
        while (st.hasMoreElements()) {
          words[index] = (String) st.nextElement();
          index++;
        }
      }
      fr.close();
      validWords = new String[numberOfWordsInFile];
      validWordsIndex = 0;
      invalidWords = new String[numberOfWordsInFile];
      invalidWordsIndex = 0;
      for (int i = 0; i < words.length; i++) if (
        (!words[i].equals("")) &&
        (words[i] != null) &&
        (words[i].matches("^[a-zA-Z]*$"))
      ) {
        validWords[validWordsIndex] = words[i];
        validWordsIndex++;
      } else {
        invalidWords[invalidWordsIndex] = words[i];
        invalidWordsIndex++;
      }
      selectionSort(validWords, validWordsIndex);
      WordGUI wg = new WordGUI();
      wg.display(
        words,
        index,
        validWords,
        validWordsIndex,
        invalidWords,
        invalidWordsIndex
      );
    } catch (IOException e) {
      e.printStackTrace();
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  static String[] selectionSort(String[] validWords, int validWordsIndex) {
    for (int i = 0; i < validWordsIndex - 1; i++) {
      int min_index = i;
      String minStr = validWords[i];
      for (int j = i + 1; j < validWordsIndex; j++) {
        if (validWords[j].compareTo(minStr) < 0) {
          minStr = validWords[j];
          min_index = j;
        }
      }
      if (min_index != i) {
        String temp = validWords[min_index];
        validWords[min_index] = validWords[i];
        validWords[i] = temp;
      }
    }
    return validWords;
  }
}

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WordGUI.java

import java.awt.GridLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;

class WordGUI {

  public void display(
    String[] words,
    int index,
    String[] validWords,
    int validWordsIndex,
    String[] invalidWords,
    int invalidWordsIndex
  ) {
    JFrame f = new JFrame();
    f.setLayout(new GridLayout(1, 3));

    String label = "";

    label = convertArrayToLabel(words, index);
    f.add(new JLabel(label));

    label = convertArrayToLabel(validWords, validWordsIndex);
    f.add(new JLabel(label));

    label = convertArrayToLabel(invalidWords, invalidWordsIndex);
    f.add(new JLabel(label));

    f.setSize(1000, 1000);
    f.setVisible(true);
  }

  public String convertArrayToLabel(String[] array, int maxIndex) {
    String label = "<html>";
    for (int i = 0; i < maxIndex; i++) {
      label = label + array[i] + "<br/>";
    }
    label = label + "</html>";
    return label;
  }
}