頁(yè)面特效:下星星的代碼(JAVA代碼)

以下的代碼就可以，lz自己在*的地方填入星星的圖片就可以了

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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

如何用JAVA輸出如下的星星？

按照你的要求編寫的Java程序如下：

import?java.util.Scanner;

public?class?Test8?{

public?static?void?main(String[]?args)?{

Scanner?sc=new?Scanner(System.in);

System.out.println("請(qǐng)輸入一個(gè)正奇數(shù):");

final?int?N=sc.nextInt();

for(int?m=1;m=2*N;m+=2){

for?(int?i?=?1;?i?=2*N;?i+=2)?{

for(int?k=1;k=Math.abs(N-m);k+=2){

for?(int?j?=?1;?j?=?Math.abs(N-i);?j+=2)?{

System.out.print("?");

}

for?(int?j?=?1;?j?=N-?Math.abs(i-N);?j++)?{

System.out.print("?");

}

for?(int?j?=?1;?j?=?Math.abs(N-i);?j+=2)?{

System.out.print("?");

}

}

for(int?k=1;k=N-?Math.abs(m-N);k++){

for?(int?j?=?1;?j?=?Math.abs(N-i);?j+=2)?{

System.out.print("?");

}

for?(int?j?=?1;?j?=N-?Math.abs(i-N);?j++)?{

System.out.print("*");

}

for?(int?j?=?1;?j?=?Math.abs(N-i);?j+=2)?{

System.out.print("?");

}

}

System.out.println();

}

}

}

}

運(yùn)行結(jié)果：

請(qǐng)輸入一個(gè)正奇數(shù):

3

*

***

*

*? *? *

*********

*? *? *

*

***

*

用Java 做一個(gè)星星圖案

這段代碼你參考一下。可以運(yùn)行的package common;public class test {

public static void main(String[] args){

Pentagram pen = new Pentagram(10,0,'　','★');

Draw.printCanvas(pen.getPentagram());

}

}// Pentagram.java 五角星類

class Pentagram {

private final char FILL_CHAR; // 填充字符

private final char SPACE_CHAR; // 空檔字符

private final int R; // 五角星的外接圓半徑

private final float ROTATION; // 五角星逆時(shí)針旋轉(zhuǎn)角度

private final int X; // 用于生成畫圖數(shù)組

private final int Y; // 用于生成畫圖數(shù)組 /**

* 構(gòu)造一個(gè)Pentagram對(duì)象

*

* @param radius

* 五角星的半徑

* @param rotation

* 五角星的逆時(shí)針旋轉(zhuǎn)度數(shù)

* @param spaceChar

* 畫布上空白處填充字符

* @param fillChar

* 畫布上線條部分填充字符

*/

public Pentagram(int radius, float rotation, char spaceChar, char fillChar) {

this.R = radius;

this.ROTATION = rotation;

this.FILL_CHAR = fillChar;

this.SPACE_CHAR = spaceChar;

this.X = 2 * R + 1;

this.Y = 2 * R + 1;

} public char[][] getPentagram() {

char[][] canvas = initCanvas();

Draw draw = new Draw(FILL_CHAR);

// 設(shè)五角星的最右邊的一個(gè)點(diǎn)為 A，逆時(shí)針選取點(diǎn) B~E

// 通過(guò)圓的極坐標(biāo)公式可以得出：

// 得出以下各點(diǎn)的坐標(biāo)

// A 點(diǎn)坐標(biāo)(0.951R, 0.309R)

// B 點(diǎn)坐標(biāo)(0, R)

// C 點(diǎn)坐標(biāo)(-0.951R, 0.309R)

// D 點(diǎn)坐標(biāo)(-0.588R, -0.809R)

// E 點(diǎn)坐標(biāo)(0.588R, -0.809R)

// 畫線段CA

draw.drawLine(mcos(162) * R, msin(162) * R, mcos(18) * R, msin(18) * R,

canvas);

// 畫線段DA

draw.drawLine(mcos(234) * R, msin(234) * R, mcos(18) * R, msin(18) * R,

canvas);

// 畫線段CE

draw.drawLine(mcos(162) * R, msin(162) * R, mcos(306) * R, msin(306)

* R, canvas);

// 畫線段DB

draw.drawLine(mcos(234) * R, msin(234) * R, mcos(90) * R, msin(90) * R,

canvas);

// 畫線段BE

draw.drawLine(mcos(90) * R, msin(90) * R, mcos(306) * R, msin(306) * R,

canvas);

return canvas;

} // 在方形的字符數(shù)組中指定兩點(diǎn)畫線條

// 對(duì)圖形數(shù)組進(jìn)行初始化，填充空格

private char[][] initCanvas() {

char[][] canvas = new char[Y][X];

for (int i = 0; i Y; i++) {

for (int j = 0; j X; j++) {

canvas[i][j] = SPACE_CHAR;

}

}

return canvas;

} // 根據(jù)角度求正弦值，保留兩位小數(shù)

private double msin(float a) {

return ((int) (Math.sin(Math.toRadians(a + ROTATION)) * 100)) / 100.0;

} // 根據(jù)角度求余弦值，保留兩位小數(shù)

private double mcos(float a) {

return ((int) (Math.cos(Math.toRadians(a + ROTATION)) * 100)) / 100.0;

}

}// Draw.java 畫圖工具類

class Draw {

private char fillChar; public Draw(char fillChar) {

this.fillChar = fillChar;

} /**

* 根據(jù)兩個(gè)點(diǎn)畫線在二維字符數(shù)組上畫線

*

* @param x1

* @param y1

* @param x2

* @param y2

* @param canvas

*/

public void drawLine(double x1, double y1, double x2, double y2,

char[][] canvas) {

int radius = (canvas.length - 1) / 2;

// 從 x 方向進(jìn)行填充

if (x1 x2) {

double t = x1;

x1 = x2;

x2 = t;

t = y1;

y1 = y2;

y2 = t;

}

// 獲得直線方程的兩個(gè)系數(shù)

double a = (y1 - y2) / (x1 - x2);

double b = y1 - a * x1;

// 根據(jù) x 方向的值求出 y 值，并填充圖形

for (int i = (int) Math.round(x1); i = (int) Math.round(x2); i++) {

// 根據(jù)直線方程 y = ax + b，求 y

int y = (int) Math.round(a * i + b);

// 因?yàn)?y 和 i 算出來(lái)的結(jié)果有可能是負(fù)數(shù)，

// 為了采用數(shù)組來(lái)表示坐標(biāo)，做了以下變換

// c[R][R] 即為坐標(biāo)原點(diǎn)

// c[R][0..R] 為 x 方向的負(fù)半軸

// c[R][R+1..2*R] 為 x 方向的正半軸

// c[0..R][R] 為 y 方向的正半軸

// c[R+1..2*R][R] 為 y 方向的負(fù)半軸

int yy = radius - y;

int xx = radius + i;

yy = yy 0 ? 0 : yy;

yy = yy 2 * radius ? 2 * radius : yy;

xx = xx 0 ? 0 : xx;

xx = xx 2 * radius ? 2 * radius : xx;

canvas[yy][xx] = fillChar;

}

// 從 y 方向進(jìn)行填充，便于減少間距問(wèn)題產(chǎn)生的字符空檔

if (y1 y2) {

double t = x1;

x1 = x2;

x2 = t;

t = y1;

y1 = y2;

y2 = t;

}

// 根據(jù) y 方向的值求出 x 值，并填充圖形

for (int i = (int) Math.round(y1); i = (int) Math.round(y2); i++) {

// 根據(jù) x = (y - b) / a，求 x

int y = (int) Math.round((i - b) / a);

int yy = radius - i;

int xx = radius + y;

yy = yy 0 ? 0 : yy;

yy = yy 2 * radius ? 2 * radius : yy;

xx = xx 0 ? 0 : xx;

xx = xx 2 * radius ? 2 * radius : xx;

canvas[yy][xx] = fillChar;

}

} /**

* 將畫完圖之后的畫布輸出到控制臺(tái)上

*

* @param canvas

*/

public static void printCanvas(char[][] canvas){

for (int i = 0; i canvas.length; i++) {

for (int j = 0; j canvas[i].length; j++) {

System.out.print(canvas[i][j]);

}

System.out.println();

}

}

}

實(shí)現(xiàn)星星閃動(dòng)的java代碼

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;

//偶數(shù)打印，畫面板

int time=0;

public void paintComponent(Graphics g){

super.paint(g);

g.fillRect(0, 0, MainTank.getWidthOfGame(), MainTank.getHeightOfGame());//繪制提示窗口

if (time%2==0){//偶數(shù)打印，畫面板，造成閃爍效果

g.setColor(Color.ORANGE);

Font font=new Font("華文楷體",Font.BOLD,30);

g.setFont(font);//選用字體

g.drawString("Ready", 140, 130);

}

}

@Override

public void run() {

while (true){

try{

Thread.sleep(250);

}catch (Exception e){

e.getMessage();

}

time++;//繪圖開關(guān)

this.repaint();

}

}

}//TipPanel

類似的，修改下就行