按照你的要求编写的Java程序如下：
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import java.util.Scanner;
public class Test8 {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.println("请输入一个正奇数:");
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();
}
}
}
}
运行结果：
请输入一个正奇数:
3
*
***
*
* * *
*********
* * *
*
***
*
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
public class Test {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
//printStar();
printStar(10);
}
/**
* 无参数打印星星
*/
public static void printStar(){
for (int i = 1; i =4; i++) {
for (int j = 1; j =i; j++) {
System.out.print("*");
}
System.out.println("");
}
}
/**
* 有参数打印星星，输入你想打印的行数
*/
public static void printStar(int row){
for (int i = 1; i =row; i++) {
for (int j = 1; j =i; j++) {
System.out.print("*");
}
System.out.println("");
}
}
}
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
}
}
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
这段代码你参考一下。可以运行的package common;public class test {
public static void main(String[] args){
Pentagram pen = new Pentagram(10,0,' ','★');
Draw.printCanvas(pen.getPentagram());
}
}// Pentagram.java 五角星类
class Pentagram {
private final char FILL_CHAR; // 填充字符
private final char SPACE_CHAR; // 空档字符
private final int R; // 五角星的外接圆半径
private final float ROTATION; // 五角星逆时针旋转角度
private final int X; // 用于生成画图数组
private final int Y; // 用于生成画图数组 /**
* 构造一个Pentagram对象
*
* @param radius
* 五角星的半径
* @param rotation
* 五角星的逆时针旋转度数
* @param spaceChar
* 画布上空白处填充字符
* @param fillChar
* 画布上线条部分填充字符
*/
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);
// 设五角星的最右边的一个点为 A，逆时针选取点 B~E
// 通过圆的极坐标公式可以得出：
// 得出以下各点的坐标
// A 点坐标(0.951R, 0.309R)
// B 点坐标(0, R)
// C 点坐标(-0.951R, 0.309R)
// D 点坐标(-0.588R, -0.809R)
// E 点坐标(0.588R, -0.809R)
// 画线段CA
draw.drawLine(mcos(162) * R, msin(162) * R, mcos(18) * R, msin(18) * R,
canvas);
// 画线段DA
draw.drawLine(mcos(234) * R, msin(234) * R, mcos(18) * R, msin(18) * R,
canvas);
// 画线段CE
draw.drawLine(mcos(162) * R, msin(162) * R, mcos(306) * R, msin(306)
* R, canvas);
// 画线段DB
draw.drawLine(mcos(234) * R, msin(234) * R, mcos(90) * R, msin(90) * R,
canvas);
// 画线段BE
draw.drawLine(mcos(90) * R, msin(90) * R, mcos(306) * R, msin(306) * R,
canvas);
return canvas;
} // 在方形的字符数组中指定两点画线条
// 对图形数组进行初始化，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;
} // 根据角度求正弦值，保留两位小数
private double msin(float a) {
return ((int) (Math.sin(Math.toRadians(a + ROTATION)) * 100)) / 100.0;
} // 根据角度求余弦值，保留两位小数
private double mcos(float a) {
return ((int) (Math.cos(Math.toRadians(a + ROTATION)) * 100)) / 100.0;
}
}// Draw.java 画图工具类
class Draw {
private char fillChar; public Draw(char fillChar) {
this.fillChar = fillChar;
} /**
* 根据两个点画线在二维字符数组上画线
*
* @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;
// 从 x 方向进行填充
if (x1 x2) {
double t = x1;
x1 = x2;
x2 = t;
t = y1;
y1 = y2;
y2 = t;
}
// 获得直线方程的两个系数
double a = (y1 - y2) / (x1 - x2);
double b = y1 - a * x1;
// 根据 x 方向的值求出 y 值，并填充图形
for (int i = (int) Math.round(x1); i = (int) Math.round(x2); i++) {
// 根据直线方程 y = ax + b，求 y
int y = (int) Math.round(a * i + b);
// 因为 y 和 i 算出来的结果有可能是负数，
// 为了采用数组来表示坐标，做了以下变换
// c[R][R] 即为坐标原点
// c[R][0..R] 为 x 方向的负半轴
// c[R][R+1..2*R] 为 x 方向的正半轴
// c[0..R][R] 为 y 方向的正半轴
// c[R+1..2*R][R] 为 y 方向的负半轴
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;
}
// 从 y 方向进行填充，便于减少间距问题产生的字符空档
if (y1 y2) {
double t = x1;
x1 = x2;
x2 = t;
t = y1;
y1 = y2;
y2 = t;
}
// 根据 y 方向的值求出 x 值，并填充图形
for (int i = (int) Math.round(y1); i = (int) Math.round(y2); i++) {
// 根据 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;
}
} /**
* 将画完图之后的画布输出到控制台上
*
* @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();
}
}
}
