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三叶玫瑰并不是植物，你也说啦，是专门研究数学的。其实是一种三叶玫瑰线的 java代码
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S 3：
输入下面程序用于输出三叶玫瑰线的图形，三叶玫瑰线的参数方程为：
x = r * sin(3t)* sin(t);y = r *sin(3t) * sin(t) 其中: 0 = t = 2 * 3.14159
#include stdio.h
#include math.h
#define RADIUS 12
#define PII 3.14159
void main(void)
{
char tx[2 * RADIUS + 1][2 * RADIUS + 1];
int nT;
int nX;
int nY;
double dbD;
for(nX = 0; nX 2 * RADIUS + 1; nX++)
{
for(nY = 0; nY 2 * RADIUS + 1; nY++)
{
tx[nX][nY] = '';
}
}
for(nT = 0; nT = 360; nT += 4)
{
dbD = nT * PII / 180;
nX = (int)(RADIUS * sin(3 * dbD) * sin(dbD)) + RADIUS;
nY = (int)(RADIUS * sin(3 * dbD) * cos(dbD)) + RADIUS;
tx[nX][nY] = '*';
}
for(nX = 0; nX 2 * RADIUS + 1; nX++)
{
for(nY = 0; nY 2 * RADIUS + 1; nY++)
{
printf("%2c", tx[nX][nY]);
}
printf("\n");
}
}
你的三叶玫瑰线程序我帮你改完了，你看看吧。
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.ArrayList;
import java.util.List;
public class GraExp4 extends JFrame{
Container J;
JButton btn=new JButton("选择颜色");
Color color=new Color(200,200,200);
JPanel jp=new JPanel();
MyJPanel mjp=new MyJPanel();
public GraExp4()
{
super("三叶玫瑰线");
J=getContentPane();
jp.setBackground(Color.WHITE);
jp.add(btn);
J.add(jp,BorderLayout.NORTH);
J.add(mjp,BorderLayout.CENTER);
btn.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
color=JColorChooser.showDialog(null,"请选择你喜欢的颜色",color);
if (color==null) color=Color.lightGray;
mjp.setForeground(color);
mjp.repaint();
}
});
setSize(450, 550);//设置窗口大小
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//设置一个默认的关闭操作，点击按钮时，退出程序。
setLocationRelativeTo(null);
setVisible(true);
}
public static void main(String[] args)
{
GraExp4 ge=new GraExp4();
}
class MyJPanel extends JPanel implements ComponentListener{
int roses=3;
MyJPanel(){
this.setBackground(Color.WHITE);
}
@Override
public void paint(Graphics g){
super.paint(g);
int x0, y0;
x0 = this.getWidth() / 2;
y0 = this.getHeight() / 2;
g.setColor(Color.RED);
g.drawLine(x0, 0, x0, y0 * 2);
g.drawLine(0, y0, x0 * 2, y0);
ListInteger listx=new ArrayListInteger();
ListInteger listy=new ArrayListInteger();
g.setColor(color);
for(int j=0;j200;j+=20)
for (int i = 0; i 1024; i++) {
double angle = i * Math.PI / 512;
double radius = j*Math.sin(roses * angle);
int x = (int) Math.round(radius * Math.cos(angle));
int y = (int) Math.round(radius * Math.sin(angle));
listx.add(x0+x);
listy.add(y0+y);
}
for (int i = 0; i listx.size()-1; i++) {
g.drawLine(listx.get(i),listy.get(i), listx.get(i+1), listy.get(i+1));
}
}
@Override
public void componentHidden(ComponentEvent arg0) {}
@Override
public void componentMoved(ComponentEvent arg0) {}
@Override
public void componentResized(ComponentEvent arg0) {
repaint();
}
@Override
public void componentShown(ComponentEvent arg0) {}
}
}
运行结果：
public static void main(String[] args) {
for(int m = 0;m=10;m++) {//玫瑰,全买,对多买10只
for(int b = 0;b=7;b++) {//百合,全买,对多买7只
for(int j = 0;j=4;j++) {//菊花全买,对多买4只
for(int k = 0;k=4;k++) {//康乃馨全买,对多买4只
int total = 2*m+3*b+5*j+6*k;
if(20==total) {
System.out.println("玫瑰买"+m+"支,百合买"+b+"支,菊花买"+j+"支,康乃馨买"+k+"支");
}
}
}
}
}
}
java jsp的啊
第一个：把如下代码加入body区域中，设置文字的话你自己弄吧
style
.drop { position: absolute; width: 3; filter: flipV(), flipH(); font-size: 40; color: blue }
/style
script language="javascript"
snow = false; // false-rain; true-snow
snowsym = " * " //These are the symbols for each
rainsym = " * " //You can put images here.
howmany = 15 //How many drops/snowflakes?
/**************Do not need to change anything below***********/
if(snow){sym = snowsym; speed=1; angle=10; drops=howmany}
else{sym = rainsym; speed=50; 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 = 'blue'}
drop[make].color = col;
}
window.onload=moverain
}
/script
第二种：建议你用这个，你可以在加几个图片
脚本说明:
第一步:把如下代码加入body区域中
script language="JavaScript"
!--
Pic=new Array('photo/04261.gif','photo/04262.gif','photo/04263.gif','photo/04264.gif','photo/04265.gif')
//Smoothness of animation depends on the number of images and they're file size.
MaxSpeed=5;
MinSpeed=2;
load = new Array()
for(i=0; i Pic.length; i++)
{
load[i] = new Image();
load[i].src = Pic[i];
}
amount=Pic.length;
ns=(document.layers)?1:0;
if (ns){
for (i=0; i amount; i++){
document.write("LAYER NAME='netscape"+i+"' LEFT=0 TOP=0img name='netpics' src="+load[i].src+"/LAYER")}
}
else{
document.write("div style='position:absolute;top:0px;left:0px'div style='position:relative'");
for (i=0; i amount; i++){
document.write("img id='explorer' src='"+load[i].src+"' style='position:absolute;top:0px;left:0px'")}
document.write("/div/div")
}
VB=0;
HB=0;
R=new Array();
PB=new Array();
RD=new Array();
Y=new Array();
X=new Array();
D=new Array();
SP=new Array();
BY=new Array();
BX=new Array();
for (i=0; i amount; i++){
Y[i]=10;
X[i]=10;
D[i]=Math.floor(Math.random()*70+10);
SP[i]=Math.floor(Math.random()*MaxSpeed+MinSpeed);
}
function Curve(){
plusMinus=new Array(1,-1,2,-2,3,-3,0,1,-1,0,5,-5)
for (i=0; i amount; i++){
R[i]=Math.floor(Math.random()*plusMinus.length);
RD[i]=plusMinus[R[i]];
}
setTimeout('Curve()',1500);
}
function MoveRandom(){
var H=(document.layers)?window.innerHeight:document.body.clientHeight;
var W=(document.layers)?window.innerWidth:document.body.clientWidth;
var YS=(document.layers)?window.pageYOffset:document.body.scrollTop;
var XS=(document.layers)?window.pageXOffset:document.body.scrollLeft;
for (i=0; i amount; i++){
BY[i]=-load[i].height;
BX[i]=-load[i].width;
PB[i]=D[i]+=RD[i];
y = SP[i]*Math.sin(PB[i]*Math.PI/180);
x = SP[i]*Math.cos(PB[i]*Math.PI/180);
if (D[i] 0) D[i]+=360;
Y[i]+=y;
X[i]+=x;
VB=180-D[i];
HB=0-D[i];
//Corner rebounds! not necessary but looks nice.
if ((Y[i] 1) (X[i] 1)) {Y[i]=1;X[i]=1;D[i]=45;}
if ((Y[i] 1) (X[i] W+BX[i])) {Y[i]=1;X[i]=W+BX[i];D[i]=135;}
if ((Y[i] H+BY[i]) (X[i] 1)) {Y[i]=H+BY[i];X[i]=1;D[i]=315;}
if ((Y[i] H+BY[i]) (X[i] W+BX[i])) {Y[i]=H+BY[i];X[i]=W+BX[i];D[i]=225;}
//Edge rebounds!
if (Y[i] 1) {Y[i]=1;D[i]=HB;}
if (Y[i] H+BY[i]) {Y[i]=H+BY[i];D[i]=HB;}
if (X[i] 1) {X[i]=1;D[i]=VB;}
if (X[i] W+BX[i]) {X[i]=W+BX[i];D[i]=VB;}
var layer=(document.layers)?document.layers['netscape'+i]:explorer[i].style;
layer.top=Y[i]+YS;
layer.left=X[i]+XS;
}
setTimeout('MoveRandom()',10);
}
function sTaRt(){Curve();MoveRandom()}
//--
/script
第二步:
把如下代码加入body区域中body bgcolor="#ffffff" onLoad="if (document.all||document.layers) sTaRt()"
第三个：这个是文字的显示，你自己决定采用上面那个后加进去
脚本说明:
第一步:把如下代码加入body区域中
script LANGUAGE="JavaScript"
function init() {
setTimeout("shake(3)",1000);
// setTimeout("this.focus()",4000);
setTimeout("shake(3)",4100);
}
function shake(n) {
if (self.moveBy) {
for (i = 10; i 0; i--) {
for (j = n; j 0; j--) {
self.moveBy(0,i);
self.moveBy(i,0);
self.moveBy(0,-i);
self.moveBy(-i,0);
}
}
}
setTimeout("shake(5)", 5000);
}
/script
script language="JavaScript"
!-- begin
var max=0;
function textlist()
{
max=textlist.arguments.length;
for (i=0; imax; i++)
this[i]=textlist.arguments[i];
}
tl=new textlist
(
"李鹏会见安得拉邦首席部长奈杜",
"述评:发展新世纪睦邻友好合作关系",
"我国外汇储备已达一千六百五十六亿美元 ",
"人民日报18日社论：推进新的农业科技革命 ",
"“神舟二号”飞船轨道舱留轨继续进行空间科学探测试验",
"联合国证实贫铀弹含有铀－236",
"罗伯逊称北约将继续东扩",
"巴方指责以色列暗杀其高级官员 ",
"亚太议会论坛第九届年会在智利开幕",
"专电：布什宣誓就职典礼准备就绪",
"专电：布什宣誓就职典礼准备就绪 "
);
var x=0; pos=0;
var l=tl[0].length;
function textticker()
{
document.tickform.tickfield.value=tl[x].substring(0,pos)+"_";
if(pos++==l)
{
pos=0;
setTimeout("textticker()",1000);
x++;
if(x==max) x=0; l=tl[x].length;
}
else
setTimeout("textticker()",50);
}
// end --
/script
form name="tickform"input type=text name="tickfield" size=33/form
第二步:把如下代码加入body区域中body bgcolor=#000000" onload="init();textticker()"
能把你的就这么多了 看你的了
没看懂你的需求，cmd控制台运行class很简单，要在哪展示玫瑰花呢？txt？浏览器页面？cmd窗口？
玫瑰花是用字符串拼接的？还是img图片类型？ 需求不一样难度也不一样哦