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java注释测试题

Java源代码原题，加注释

import java.awt.Canvas;

import java.awt.Color;

import java.awt.Font;

import java.awt.Frame;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.awt.event.MouseMotionListener;

import java.awt.event.WindowEvent;

import java.awt.event.WindowListener;

import java.util.Arrays;

import javax.swing.JApplet;

import javax.swing.JFrame;

import javax.swing.JPanel;

public class Billard4K extends JPanel implements Runnable, MouseListener, MouseMotionListener {

// GAME STA TES

public final int WAITING_TO_START = 0;

public final int WAITING_TO_HIT = 1;

public final int MOVING = 2;

public final int FINISHING = 3;

public int state = 0;

// TABLE

double hR;

double[] tableX;

double[] tableY;

double[] holesX;

double[] holesY;

// BALLS

public int nballs;

public int nBallsOn;

double[] x;

double[] y;

double[] vx;

double[] vy;

double[] nextX;

double[] nextY;

double[] nextVx;

double[] nextVy;

boolean[] borderCollision;

boolean[][] collision;

boolean[] onTable;

double r = 10;

// RENDERING

Image backBuffer;

Image backGround;

// MOUSE

int mX;

int mY;

int mXPost;

int mYPost;

boolean clicked;

// STICK

public final int MAX_STRENGTH = 1000;

int sL = 300;

int actualStep = 0;

public Billard4K() {

super();

this.setBounds(50, 50, 700, 350);

//this.setResizable(false);

//this.setUndecorated(true);

//this.setVisible(true);

JFrame f = new JFrame("Billard4K");

f.add(this);

f.setBounds(0, 0, 700, 380);

f.setResizable(false);

f.setVisible(true);

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.requestFocus();

init();

}

public void init() {

initTable();

initBalls();

backBuffer = this.createImage(this.getWidth(), this.getHeight());

//gBackBuffer = backBuffer.getGraphics();

//gBackBuffer.setFont(new Font("Courier", Font.BOLD, 20));

createBackGround();

this.addMouseListener(this);

this.addMouseMotionListener(this);

start();

}

答案

这个代码是javaswing里面很常见的代码结构