JTextField not visible in swing

I want my program to display a text field. The text will be a random spanish word or phrase. Then I enter in the correct english translation. I want it to wait for 5 seconds after I enter text. Then set the text to a new word, wait for my translation, wait 5 seconds, etc etc until I close the program.

Code :

---

import java.util.ArrayList;
import java.util.Random;
public class Library {
 
	public ArrayList<String> spanish = new ArrayList<String>();		//make a spanish list
	public ArrayList<String> english = new ArrayList<String>();		//make an english list
	static Random random = new Random();		//make a random object
	private int index;
 
	public void setIndex(int index) {
		this.index = index;
	}
 
	public int getIndex() {
		return index;
	}
 
	//method to add all Strings to the lists
	public void makeLists() {
		spanish.add("Como te llamas?");	english.add("What is your name?");
		spanish.add("Como se llama?");	english.add("What is his/her name?");
		spanish.add("Por favor");		english.add("Please");
 
	}
 
	//method to grab a word or phrase from the spanish list
	public String getOne() {
		int x = random.nextInt(spanish.size());
		setIndex(x);
		return spanish.get(getIndex());
	}	
 
}

---

Code :

---

import javax.swing.*;
import java.io.*;
 
import java.util.Random;
 
public class Player extends Thread{
 
	static JTextField text = new JTextField();		//make the text field
	static Library library = new Library();			//make a library object
	static Random random = new Random();			//make a random object
 
	public static void main(String args[]) {
		Player player = new Player();		//make a player
		library.makeLists();				//make the lists
		player.start();						//start
 
	}
 
	public void run() {
		try {
			text.setVisible(true);			//make the field visible
			boolean loop = true;
			while(loop) {					//loop forever
				text.setText(library.getOne() + "\n");		//set the text to a random spanish phrase
				InputStreamReader isr = new InputStreamReader(System.in);
				BufferedReader br = new BufferedReader(isr);
				if(((br.readLine().equalsIgnoreCase(library.english.get(library.getIndex())))))	
				{
					text.setText("Right!");		//if i enter in the correct english translation, i'm right
				}
 
				else text.setText("Wrong. The answer is " + library.english.get(library.getIndex()));		//if i'm wrong, display the right answer
 
				Thread.sleep(5000);			//wait for 5 seconds
			}	
		}
		catch(Exception ex) {
			ex.printStackTrace();
		}
 
	}
 
}

---

Whenever I run the program...nothing happens. Well I'm assuming SOMETHING happens, but no text field comes up on my screen. My screen just remains the same and eventually I click the red terminate button (in Eclipse) when I give up on waiting. Can anyone tell me what's wrong or point me in some direction please?? Thanks.

It creates your JTextField but it dosnt have anything to show it on.
You need a frame for your program first, for that you can use JFrame.
I would suggest adding a JPanel to it first, but to make it simple you can skip it, and add your textfield right into JFrame.

Add this constructor to your Player class

Code :

---

public Player(){
		//Creating frame for the program
		JFrame frame = new JFrame();
		//adding JTextField to the frame
		frame.add(text);
		//Make frame visible
		frame.setVisible(true);
		//Resize so everything fits in.
		frame.pack();
		}

---

Okay, I added that into the constructor and it showed up. The problem I'm having now though is that when I type in a translation, and hit enter, nothing happens. Also, the JTextField is very smal.; only containing the initial text. Is there a way to make it bigger and/or set the cursor at the end of the String? If there is no way to do it...can a JTextArea do this?

Well let's see what is going wrong..

First what I notice is that you are reading in lines from console, instead you should try to create new JTextField and use it for input.

Also lets try adding everything to a JPanel first, so it will be showed properly.

Take a look at my code, I added small changes, give me a shout if you don't understand it.

Code :

---

import javax.swing.*;
import java.util.Random;
 
public class Player extends Thread {
 
	//Text field that will show output
	private JTextField text;
	//Text field that will take input
	private JTextField input;
 
	static Library library = new Library();			//make a library object
	static Random random = new Random();			//make a random object
 
 
	public static void main(String args[]) {
		library.makeLists();				//make the lists
		Player player = new Player();		//make a player	
		player.start();                                    //start
	}
 
	public Player(){
		//Creating frame for the program
		JFrame frame = new JFrame();
 
		//Creating JPanel
		JPanel contentPanel = new JPanel();
 
		//creating text fields and labels ("initial text", length)
		text = new JTextField("Output field", 30);
		input = new JTextField("Input field", 30);
 
		//adding textFields and label to the frame
		contentPanel.add(text);
		contentPanel.add(input);
 
		//adding contentPanel to the frame
		frame.add(contentPanel);
 
		//Make frame visible
		frame.setVisible(true);
 
		//Resize so everything fits in.
		frame.pack();
 
		//Make program close properly once we press close button.
		frame.setDefaultCloseOperation(frame.EXIT_ON_CLOSE);
 
		}
 
	public void run() {
		try {
			text.setVisible(true);			//make the field visible
			boolean loop = true;
			while(loop) {					//loop forever
				text.setText(library.getOne() + "\n");		//set the text to a random spanish phrase
				//clear the string that was there.
				input.setText("");
				//give focus to the input field
				input.grabFocus();
				//give user 5 seconds to answer
				Thread.sleep(5000);
				if(((input.getText().equalsIgnoreCase(library.english.get(library.getIndex())))))	
				{
					text.setText("Right!");		//if i enter in the correct english translation, i'm right
				}
 
				else text.setText("Wrong. The answer is " + library.english.get(library.getIndex()));		//if i'm wrong, display the right answer
				//Give user 5 seconds to see the response
				Thread.sleep(5000);
			}	
		}
		catch(Exception ex) {
			ex.printStackTrace();
		}
 
	}
 
}

---

Awesome! With an added Thread.sleep(..) in the if/else statement the program is working exactly as I wanted it to. Thanks.