java敲代码爆炸特效,js爆炸效果
Java代码，敲代码
public class Vehicles {
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private String brand;
private String color;
//构造方法
public Vehicles(String brand, String color) {
this.brand = brand;
this.color = color;
}
public void run() {
System.out.println("我已经开动了");
}
public void showinfo() {
System.out.println("商标： " + brand);
System.out.println("颜色： " + color);
}
}
保存为Vehicles.java
/////////////////////////////////////////////////////////////
public class Car extends Vehicles {
private int seats;
//构造方法
public Car(String brand, String color, int seats) {
super(brand, color);
this.seats = seats;
}
public void showCar() {
super.showinfo();
System.out.println("座位： " + seats + " 个");
}
}
保存为 Car.java
//////////////////////////////////////////////////////////////////////////////
public class Truck extends Vehicles {
private float load;
public Truck(String brand, String color, float load) {
super(brand, color);
this.load = load;
}
public void showTruck() {
super.showinfo();
System.out.println("载重 ：" + load + "吨");
}
}
保存为Truck.java
//////////////////////////////////////////////////////////////////////////////
public class Test {
public static void main(String[] args) {
Vehicles vehicle = new Vehicles("奥迪", "黑色");
vehicle.showinfo();
Car car = new Car("桑塔纳", "红色", 5);
car.showCar();
Truck truck = new Truck("解放", "蓝色", 10);
truck.showTruck();
}
}
作为一个Java初学者,照着书敲代码有用吗
绝对是有用的，很大用出。
代码就是这样，你只有敲得多了才会慢慢学好。
不要怕累，多联系会好的。
如有帮助请采纳谢谢
页面特效:下星星的代码(JAVA代码)
以下的代码就可以，lz自己在*的地方填入星星的图片就可以了
body bgcolor=#ee3300
style
.drop { position: absolute; width: 3; filter: flipV(), flipH(); font-size: 40; color: #ffffff }
/style
script language="javascript"
snow = false; // false-rain; true-snow
snowsym = " * " are the symbols for each
rainsym = " * " can put images here.
howmany = 20 many drops/snowflakes?
/**************Do not need to change anything below***********/
if(snow){sym = snowsym; speed=1; angle=10; drops=howmany}
else{sym = rainsym; speed=30; drops=howmany; angle=6}
movex = -speed/angle; movey = speed; count = 0;
function moverain(){
for(move = 0; move drops; move++){
xx[move]+=movex; yy[move]+=mv[move];
hmm = Math.round(Math.random()*1);
if(xx[move] 0){xx[move] = maxx+10;}
if(yy[move] maxy){yy[move] = 10;}
drop[move].left = xx[move]
drop[move].top = yy[move]+document.body.scrollTop;
}setTimeout('moverain()','1')}
/script
script language="javascript"
if (document.all){
drop = new Array(); xx = new Array(); yy = new Array(); mv = new Array()
ly = "document.all[\'"; st = "\'].style"
for(make = 0; make drops; make++){
document.write('div id="drop'+make+'" class=drop'+sym+'/div');
drop[make] = eval(ly+'drop'+make+st);
maxx = document.body.clientWidth-40
maxy = document.body.clientHeight-40
xx[make] = Math.random()*maxx;
yy[make] = -100-Math.random()*maxy;
drop[make].left = xx[make]
drop[make].top = yy[make]
mv[make] = (Math.random()*5)+speed/16;
drop[make].fontSize = (Math.random()*10)+20;
if(snow){col = 'white'}else{col = 'white'}
drop[make].color = col;
}
window.onload=moverain
}
/script
/body
java编按鼠标就发射子弹代码
监听鼠标动作，
然后控制子弹图片移动。
然后跟目标做碰撞检测。
java 事件 消息传递机制 实际上是
1、用户点击鼠标左键。
2、操作系统触发一个事件传递个java程序。
3、java程序再去触发你代码里相关控件的ui响应或者你自己定义的Listener。
我认为想要实现你的需求的话，忽略1，在2处模拟操作系统同，传递一个事件给java程序了，这只是我的一个想法。
java全是代码，怎么会做出非常漂亮的画面
唉，给你看看小Case的,自己运行一下
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
public class TranslucentButton extends JButton {
BufferedImage buttonImage = null;
/** Creates a new instance of TranslucentButton */
public TranslucentButton(String label) {
super(label);
setOpaque(false);
}
public void paint(Graphics g) {
// Create an image for the button graphics if necessary
if (buttonImage == null || buttonImage.getWidth() != getWidth() ||
buttonImage.getHeight() != getHeight()) {
buttonImage = getGraphicsConfiguration().
createCompatibleImage(getWidth(), getHeight());//返回一个数据布局和颜色模型与此 GraphicsConfiguration 兼容的 BufferedImage
}
Graphics gButton = buttonImage.getGraphics();
gButton.setClip(g.getClip());//设置获取的当前的剪贴区域
// Have the superclass render the button for us
super.paint(gButton);
// Make the graphics object sent to this paint() method translucent
Graphics2D g2d = (Graphics2D)g;
AlphaComposite newComposite =
AlphaComposite.getInstance(AlphaComposite.SRC_OVER, .5f);
g2d.setComposite(newComposite);
// Copy the button's image to the destination graphics, translucently
g2d.drawImage(buttonImage, 0, 0, null);
}
private static void createAndShowGUI() {
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setSize(300, 300);
JPanel checkerboard = new Checkerboard();
checkerboard.add(new TranslucentButton("Translucent Button"));
f.add(checkerboard);
f.setVisible(true);
}
public static void main(String args[]) {
Runnable doCreateAndShowGUI = new Runnable() {
public void run() {
createAndShowGUI();
}
};
SwingUtilities.invokeLater(doCreateAndShowGUI);//swing线程
}
private static class Checkerboard extends JPanel {
static final int CHECKER_SIZE = 60;
public void paintComponent(Graphics g) {
g.setColor(Color.white);
g.fillRect(0, 0, getWidth(), getHeight());
g.setColor(Color.BLACK);
for (int stripeX = 0; stripeX getWidth(); stripeX += CHECKER_SIZE) {
for (int y = 0, row = 0; y getHeight(); y += CHECKER_SIZE/2, ++row) {
int x = (row % 2 == 0) ? stripeX : (stripeX + CHECKER_SIZE/2);
g.fillRect(x, y, CHECKER_SIZE/2, CHECKER_SIZE/2);
}
}
}
}
}
用java线程做飞机大战，发射子弹及爆炸的代码怎么写啊，求高人，写上注释吧，不然看不懂，谢谢
代码有点多, 实现思路, 实现键盘事件监听机制, 在监听函数中判断 按了什么键,比如按J就发送子弹. 然后启动子弹线程. 定义一个子弹类线程, 定义出子弹的所在属性和方法.
写个方法,判断子弹是否击中目标,以XY坐标相交来判断
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