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要使用 Java 編寫俄羅斯方塊游戲，可以使用 Java 圖形庫（如 AWT 或 JavaFX）來創建游戲界面和圖形。下面是一個簡單的示例代碼以幫助你入門：

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Timer;
public class Tetris extends JPanel implements ActionListener, KeyListener {
private static final int WIDTH = 10;
private static final int HEIGHT = 20;
private static final int SQUARE_SIZE = 30;
private static final int DELAY = 300;
private Timer timer;
private boolean isFallingFinished = false;
private boolean isStarted = false;
private boolean isPaused = false;
private int score = 0;
private int currentX = 0;
private int currentY = 0;
private List tetrominoes = new ArrayList();
private int[][] board = new int[WIDTH][HEIGHT];
public Tetris() {setPreferredSize(new Dimension(WIDTH * SQUARE_SIZE, HEIGHT * SQUARE_SIZE));
setBackground(Color.BLACK);
setFocusable(true);
addKeyListener(this);
initializeTetrominoes();}
private void initializeTetrominoes() {tetrominoes.add(new int[][] { { 1, 1, 1, 1} }); // I shape
tetrominoes.add(new int[][] { { 1, 1, 0}, {0, 1, 1} }); // Z shape
tetrominoes.add(new int[][] { { 0, 1, 1}, {1, 1, 0} }); // S shape
tetrominoes.add(new int[][] { { 1, 1, 1}, {0, 0, 1} }); // J shape
tetrominoes.add(new int[][] { { 1, 1, 1}, {1, 0, 0} }); // L shape
tetrominoes.add(new int[][] { { 0, 1, 0}, {1, 1, 1} }); // T shape
tetrominoes.add(new int[][] { { 1, 1}, {1, 1} }); // O shape
}
private void start() {
isStarted = true;
isPaused = false;
score = 0;
clearBoard();
newPiece();
timer = new Timer(DELAY, this);
timer.start();}
private void pause() {if (!isStarted) {return;}
isPaused = !isPaused;
if (isPaused) {timer.stop();
} else {timer.start();
}
repaint();}
@Override
public void paintComponent(Graphics g) {super.paintComponent(g);
drawBoard(g);
drawPiece(g);
}
private void drawBoard(Graphics g) {for (int i = 0; i < WIDTH; i++) {for (int j = 0; j < HEIGHT; j++) {if (board[i][j] != 0) {g.setColor(Color.CYAN);
g.fillRect(i * SQUARE_SIZE, j * SQUARE_SIZE, SQUARE_SIZE, SQUARE_SIZE);
}
}
}
}
private void drawPiece(Graphics g) {g.setColor(Color.YELLOW);
for (int i = 0; i < 4; i++) {for (int j = 0; j < 4; j++) {if (tetrominoes.get(0)[i][j] != 0) {g.fillRect((currentX + i) * SQUARE_SIZE, (currentY + j) * SQUARE_SIZE, SQUARE_SIZE, SQUARE_SIZE);
}
}
}
}
private void newPiece() {int randomIndex = (int) (Math.random() * tetrominoes.size());
currentX = WIDTH / 2;
currentY = 0;
if (!isMoveValid(tetrominoes.get(randomIndex), currentX, currentY)) {
isStarted = false;
timer.stop();}
}
private boolean isMoveValid(int[][] shape, int newX, int newY) {for (int i = 0; i < 4; i++) {for (int j = 0; j < 4; j++) {

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