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java满天星星代码,HTML 满天星代码
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用Java语言打星星
第一个的代码如下,可以改变i的数值来控制X形状的大小
class Test
{
public static void main(String[] args)
{
int i=3;
int j=i*2-1;
int k,l;
for(;j0;j--)
{
k=(i-1)-Math.abs(j-i);
l=Math.abs(j-i)*2-1;
for(;k0;k--)
{
System.out.print(" ");
}
System.out.print("*");
if(l0)
{
for(;l0;l--)
{
System.out.print(" ");
}
System.out.print("*");
}
System.out.print("\n");
}
}
}
你第二个我也没看明白,不过思路应该都差不多,你根据这一个自己琢磨琢磨吧,关键问题就在k和l的计算上.
相关问答
Q1: Java 画星星
public class A {
public void drow(int n){//n表示高度（打印的行数）
for(int i=n;i0;i--){
for(int j=i-1;j0;j--){//先打印i-1个空格
System.out.print(" ") ;
}
System.out.print("*") ;//打印第一个*
for(int j=2*(n-i)-1;j0;j--){//中间部分的空格
System.out.print(" ") ;
}
if(i!=ni!=1){//除了首尾两行外每行中间的*
System.out.print("*") ;
}
for(int j=2*(i-1)-1;j0;j--){//右面部分的空格
System.out.print(" ") ;
}
System.out.println("*") ;//最后一个*
}
}
public static void main(String[] args){
A a = new A() ;
a.drow(3) ;//这里打印一个三层的
}
}
Q2: 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
Q3: 实现星星闪动的java代码
package panel;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import javax.swing.JPanel;
import main.MainTank;
public class TipPanel extends JPanel implements Runnable{
/**
*
*/
private static final long serialVersionUID = 1L;
//偶数打印，画面板
int time=0;
public void paintComponent(Graphics g){
super.paint(g);
g.fillRect(0, 0, MainTank.getWidthOfGame(), MainTank.getHeightOfGame());//绘制提示窗口
if (time%2==0){//偶数打印，画面板，造成闪烁效果
g.setColor(Color.ORANGE);
Font font=new Font("华文楷体",Font.BOLD,30);
g.setFont(font);//选用字体
g.drawString("Ready", 140, 130);
}
}
@Override
public void run() {
while (true){
try{
Thread.sleep(250);
}catch (Exception e){
e.getMessage();
}
time++;//绘图开关
this.repaint();
}
}
}//TipPanel
类似的，修改下就行
