I just started with Java and programming. This is my second program and I have a little problem. So, first of all, I wrote a program that can translate words to morse code. Now I want to add JFrame with 3 elements. JTextArea will be used for the English words, JButton will be used to translate and JLabel with translated Morse code.
Problem is that I can't get access to already programmed code. I tried to copy both "for" in ActionListener, but then the program does nothing. So the question is how can I get this translator working in JFrame?
I will really appreciate your advice. I need to learn a lot. :-)
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Main extends JFrame{
public Main(){
initComponents();
}
public void initComponents(){
this.setTitle("Translator");
this.setLocationRelativeTo(null);
this.getContentPane();
this.add(panel);
panel.add(text);
panel.add(go);
panel.add(see);
go.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
String toTrans = text.getText();
System.out.println(toTrans);
//There I tried to copy my both "for"
System.out.println(see.getText());
}
});
this.pack();
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
JPanel panel = new JPanel();
JTextArea text = new JTextArea(1, 10);
JButton go = new JButton("Translate");
JLabel see = new JLabel("");
public static void main(String[] args) {
String toTranslate = "test".toLowerCase();
char[] english = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j',
'k', 'l','m', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u',
'v', 'w', 'x', 'y', 'z'};
String[] morse = {"• — ", "— • • • ", "— • — •", "— • • ", "•", "• • — •", "— — •", "• • • •",
"• •", "• — — —", "— • —", "• — • •","— —", "— •", "— — —", "• — — •",
"— — • —", "• — •", "• • •", "—", "• • —", "• • • —", "• — —", "— • • —",
"— • — —", "— — • •"};
char[] chars = toTranslate.toCharArray();
String translated = "";
for(int i = 0; i < chars.length; i++)
for (int j = 0; j < english.length; j++)
if (english[j] == chars[i]){
translated = toTranslate + morse[j] + "";
}
System.out.println(toTranslate);
new Main().setVisible(true);
}
}
And there is what i tried to do, there is no Error, but button does nothing:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Main extends JFrame{
public Main(){
initComponents();
}
public void initComponents(){
this.setTitle("Translator");
this.setLocationRelativeTo(null);
this.getContentPane();
this.add(panel);
panel.add(text);
panel.add(go);
panel.add(see);
go.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
String toTrans = text.getText();
System.out.println(toTrans);
for(int i = 0; i < chars.length; i++)
for (int j = 0; j < english.length; j++)
if (english[j] == chars[i]){
see.setText(morse[j] + "");
}
System.out.println(see.getText());
}
});
this.pack();
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
JPanel panel = new JPanel();
JTextArea text = new JTextArea(1, 10);
JButton go = new JButton("Translate");
JLabel see = new JLabel("");
char[] english = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j',
'k', 'l','m', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u',
'v', 'w', 'x', 'y', 'z'};
String[] morse = {"• — ", "— • • • ", "— • — •", "— • • ", "•", "• • — •", "— — •", "• • • •",
"• •", "• — — —", "— • —", "• — • •","— —", "— •", "— — —", "• — — •",
"— — • —", "• — •", "• • •", "—", "• • —", "• • • —", "• — —", "— • • —",
"— • — —", "— — • •"};
char[] chars = text.getText().toCharArray();
public static void main(String[] args) {
new Main().setVisible(true);
}
}
1) Use the unicode "\u2022 \u2014 " instead of "• — "
2) Add chars = text.getText().toCharArray();
in actionPerformed
to set the given text to your chars variable
3) Create the translation translated.append(morse[j]);
4) Set the translation to the label see.setText(translated.toString());
5) Refresh the frame frame.pack();
@Override
public void actionPerformed(ActionEvent e) {
chars = text.getText().toCharArray();
StringBuilder translated = new StringBuilder();
System.out.println(chars);
for (int i = 0; i < chars.length; i++)
for (int j = 0; j < english.length; j++)
if (english[j] == chars[i]) {
translated.append(morse[j]);
}
see.setText(translated.toString());
System.out.println(see.getText());
frame.pack();
}
and the frame variable is
public void initComponents() {
JFrame frame = this;
this.setTitle("Translator");
replace your chars array with
String[] morse = {"\u2022 \u2014 ", ... }