Question

Okay so I'm fairly new to java. I need help with a code where the programs reads in a txt file, and outputs the word, and how many times they appeared in the file. I want to output the result in a Window, I think its called JFrame. I figured out the code to get the words and number of times they appear on the console, need help with outputting in another frame.

Answer 1

This is the code:

{
public static void main(String[] args) throws FileNotFoundException
{
// Read-in text from a file and store each word and its
// frequency (count) in a collection.
Scanner inputFile = new Scanner(new File("phrase.txt"));
String word;
Integer count;
TreeMap<String,Integer> myMap = new TreeMap<String,Integer>();
while(inputFile.hasNext())
{
word = inputFile.next();
count = myMap.get(word);
if (count==null)
{
count=1;
myMap.put(word,count);
}
else
{
count=count+1;
myMap.put(word,count);
}
}


inputFile.close();

// Output each word, followed by a tab character, followed by the
// number of times the word appeared in the file. The words should
// be in alphabetical order.
for (String i: myMap.keySet())
{
System.out.println(i+ "\t" + myMap.get(i));
}

}
}

Answer 2

If you want the output text in a frame that isn't necessarily a JFrame, you should consider JOptionPane's showMessageDialog() method, which is a simple one-liner.
ie;
```
//import javax.swing.JOptionPane;
String str = "";
for(int i = 1; i < 10; i++) {
str += String.valueOf(i)+".\n";
}
JOptionPane.showMessageDialog(null, str);
//null for parentFrame will lead to a default created frame
//str is the message to display
```

For usage of a JFrame, here's an example to help get you started:
```
//main frame
JFrame jf = new JFrame("title");
//jf.setSize(500, 500);

JPanel jp = new JPanel();
jp.setBackground(Color.BLACK);

ArrayList<JLabel> toPrint = new ArrayList<JLabel>();
for(int i = 1; i < 6; i++) {
toPrint.add(new JLabel("Entry "+String.valueOf(i)));
toPrint.get(i-1).setForeground(Color.GREEN);
toPrint.get(i-1).setBackground(Color.BLACK);
}

for(JLabel label : toPrint) {
jp.add(label);
}

jf.add(jp);
jf.pack(); //auto-sets the dimensions based on inner component sizes
jf.setLocationRelativeTo(null); //sets frame to appear in center
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //close program after exit
jf.setVisible(true); //show frame
```

To vertically align text in a Frame, I'd either use the above example with a GridLayout layout manager, or a JList, or a JTextArea.