Matrix código aberto

import java.awt.*;  
import java.util.*;  
import javax.swing.*;  
  
@SuppressWarnings("serial")  
public class matrixRain extends JFrame {   
private static final int FONT_SIZE = 20;  
private static final int NUMBER_OF_REPEATS = 5;  
private static final String TEXT = new String("あ     た        
ア        カ                                  サ    ザ      ジ    
ズ       ゼ       ゾ           シ    ス      セ   ソ    キ   ク   ケ   コ   イ  ウ   エ    オ   ジャ な");  
private static JPanel panel = new JPanel(null);  
private static Random random = new Random();  
private static JLabel label[] = new JLabel[NUMBER_OF_REPEATS];  
  
public matrixRain() {          
   this.add(panel);  
   panel.setBackground(Color.BLACK);  
}  
public void scroll() {  
      //array to hold x coordinates for the labels  
    int[] random_x = new int[NUMBER_OF_REPEATS];  
    //create an infinite loop  
    while (true) {  
        //initialise all the labels to random characters  
        for (int i = 0; i < NUMBER_OF_REPEATS; i++) {  
         int character_initial = random.nextInt(TEXT.length());  
          random_x[i] = random.nextInt(panel.getWidth() / FONT_SIZE) - 1;  
          label[i] = new JLabel("" + TEXT.charAt(character_initial));  
          panel.add(label[i]);  
          label[i].setFont(new Font("monospaced", Font.PLAIN, FONT_SIZE));  
        label[i].setForeground(new Color(0, 255, 0));  
     }  
    // change the text of the labels and their position  
    for (int j = 0; j < (panel.getHeight() / FONT_SIZE) * 2; j++) {  
        int character = random.nextInt(TEXT.length());  
        //move each character  
       for (int i = 0; i < NUMBER_OF_REPEATS; i++) {  
            label[i].setBounds(random_x[i] * FONT_SIZE, j * (FONT_SIZE / 2), FONT_SIZE, FONT_SIZE);  
            label[i].setText("" + TEXT.charAt(character));  
            label[i].setForeground(new Color(0, 255 - (j * 5), 0));       
           for (int k = 0; k < NUMBER_OF_REPEATS; k++) {  
               int character_initial = random.nextInt(TEXT.length());  
               random_x[k] = random.nextInt(panel.getWidth() / FONT_SIZE) - 1;  
                label[k] = new JLabel("" + TEXT.charAt(character_initial));  
                panel.add(label[k]);  
                label[k].setFont(new Font("monospaced", Font.PLAIN, FONT_SIZE));  
               label[k].setForeground(new Color(0, 255, 0));  
               Color colour = label[k].getForeground();  
               if (colour.getGreen() <= 80) {  
                    panel.remove(label[k]);  
                   k = (panel.getHeight() / FONT_SIZE) * 2;  
                }  
            }  
        }  
        // pause between each character  
        try {  
            Thread.sleep(15);  
        } catch (Exception e) {  
        }  
     }  
  }  
        }  
  public static void main(String[] args) {  
      matrixRain frame = new matrixRain();  
      frame.setVisible(true);  
      frame.setSize(600, 400);  
     frame.setResizable(false);  
     frame.setMinimumSize(new Dimension(300, 200));  
      frame.setLocationRelativeTo(null);  
     frame.setTitle("Matrix Code Emulator by Ricco");  
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);     
      frame.scroll();  
  }  
}