This program shows the use of
DocumentListener to listen for changes in a textfield. Three different words will appear on the screen and user needs to type them all one by one. When a correct word is typed, the corresponding word will dissappear and a variable named "score" will be added by 1. The variable "displayed" is used to count the number of words that have been displayed on the screen.
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164 | import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import java.util.*;
public class TypingTutor extends JFrame{
JButton b=null;
JPanel p=null;
JTextField tf=null;
JLabel l=null;
JLabel l2=null;
int score=0;
int displayed=0;
ArrayList<String> wordlist;
WordRun word1=null;
WordRun word2=null;
WordRun word3=null;
public TypingTutor(){
super("Typing Tutor");
setSize(400,400);
setLayout(new BorderLayout());
b=new JButton("Start");
b.addActionListener(new ButtonHandler());
add(b,BorderLayout.NORTH);
p=new DrawPanel();
p.setPreferredSize(new Dimension(300,300));
add(p,BorderLayout.CENTER);
JPanel p2=new JPanel();
p2.setLayout(new FlowLayout());
tf=new JTextField(10);
tf.getDocument().addDocumentListener(new ListenText());
p2.add(tf);
l=new JLabel("0");
p2.add(l);
l2=new JLabel("0");
p2.add(l2);
add(p2,BorderLayout.SOUTH);
wordlist=new ArrayList<String>();
wordlist.add(0,"abandon");
wordlist.add(1,"abate");
wordlist.add(2,"abbreviate");
wordlist.add(3,"abdicate");
wordlist.add(4,"aberration");
wordlist.add(5,"abhorrence");
wordlist.add(6,"ability");
wordlist.add(7,"ablaze");
wordlist.add(8,"abnormal");
wordlist.add(9,"aboard");
word1=new WordRun();
word2=new WordRun();
word3=new WordRun();
word1.st=null;
word2.st=null;
word3.st=null;
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
show();
}
class DrawPanel extends JPanel{
public void paintComponent(Graphics g){
super.paintComponent(g);
Graphics2D g2=(Graphics2D)g;
Font f=new Font("Monospaced",Font.BOLD,14);
FontMetrics fm=this.getFontMetrics(f);
g2.setColor(Color.BLACK);
g2.setFont(f);
if(word1.st!=null){
g2.drawString(word1.st,word1.posx,word1.posy);
}
if(word2.st!=null){
g2.drawString(word2.st,word2.posx,word2.posy);
}
if(word3.st!=null){
g2.drawString(word3.st,word3.posx,word3.posy);
}
}
}
class WordRun implements Runnable{
String st=null;
int posx;
int posy;
public void run(){
try{
Random rand=null;
while(true){
if((st==null)||(posy==p.getHeight())){
rand=new Random();
Thread.currentThread().sleep(rand.nextInt(1000));
st=wordlist.get(rand.nextInt(10));
posy=0;
do{
posx=rand.nextInt(p.getWidth());
}while(posx>(p.getWidth()-100));
tf.setText("");
displayed++;
l2.setText(displayed+"");
}
else{
Thread.currentThread().sleep(20);
posy++;
}
repaint();
}
}catch(Exception e){
}
}
}
class ButtonHandler implements ActionListener{
public void actionPerformed(ActionEvent e){
if(e.getActionCommand()=="Start"){
Thread t1=new Thread(word1);
Thread t2=new Thread(word2);
Thread t3=new Thread(word3);
t1.start();
t2.start();
t3.start();
}
}
}
class ListenText implements DocumentListener{
public void changedUpdate(DocumentEvent e) {
}
public void removeUpdate(DocumentEvent e) {
}
public void insertUpdate(DocumentEvent e) {
if(tf.getText().equals(word1.st)){
word1.st=null;
word1.posy=0;
score++;
l.setText(score+"");
}
if(tf.getText().equals(word2.st)){
word2.st=null;
word2.posy=0;
score++;
l.setText(score+"");
}
if(tf.getText().equals(word3.st)){
word3.st=null;
word3.posy=0;
score++;
l.setText(score+"");
}
}
}
public static void main(String[] args){
TypingTutor ap=new TypingTutor();
}
}
|
i cannot run it on java, help me please :'(
ReplyDeletecreate a TypingTutor class without a main method and just copy and paste this code into the brackets
ReplyDeleteThank you so much
ReplyDelete