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抽奖java小程序源代码 抽奖小程序源码带后端
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JAVA抽签小程序
您好：package test;import java.util.HashSet;
import java.util.Set;
import java.util.Iterator;public class test {
public static void main(String[] args) {
Set set = new HashSet();
for (int i = 1; i = 100; i++) {
set.add(i);
}
Iterator it = set.iterator();
for (int i = 0; i set.size(); i++) {
if(it.hasNext()){
System.out.println(it.next());
}
}
}
}先把100放入set然后再随即找出来。另外一个想法是随即产生数，放入list中判断是否重复，这样也达到这样的效果。
相关问答
Q1: 求一个java applet小程序的源代码
import java.applet.Applet;
import java.awt.Button;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.TextField;
import java.awt.event.ActionEvent;
public class Nicki extends Applet{
private static final long serialVersionUID = 1L;
private Button ok;
private int num=32;
private int resu=0;
private boolean isRig=false;
private TextField iPut;
public Nicki(){
this.setLayout(null);
ok=new Button("OK");
ok.setActionCommand(getName());
ok.setBounds(150, 150, 40, 20);
iPut=new TextField();
this.add(iPut);
iPut.setBounds(100, 150, 40, 20);
this.add(ok);
ok.addActionListener(new ButtonAction(this));
}
public void paint(Graphics g){
g.setColor(Color.white);
g.fillRect(0, 0, this.getWidth(), this.getHeight());
g.setColor(Color.BLACK);
g.drawString("Please guess a number ", 10, 20);
g.drawString("between 1 and 100", 10, 40);
if(isRig==falseresu!=0){
if(resunum){
g.drawString(""+resu+" is too big !", 10, 100);
}else if(resunum){
g.drawString(resu+"is too small !", 10, 100);
}
}else if(isRig==true){
g.setColor(Color.GREEN);
g.drawString("Yes,"+resu+" is the right number", 10, 80);
g.drawString("Your are great! ", 10, 100);
g.setColor(Color.red);
g.drawString(resu+"!", 70, 120);
}
iPut.setText("");
g.drawString("Input the number：", 0, 150);
}
public void ButtonActionPerformed(ActionEvent e){
if(e.getActionCommand().equals("panel0")){
resu=Integer.parseInt(iPut.getText());
if(num==resu){
isRig=true;
}else{
isRig=false;
}
repaint();
}
}
}
class ButtonAction implements java.awt.event.ActionListener{
Nicki su;
public ButtonAction(Nicki bun){
this.su=bun;
}
public void actionPerformed(ActionEvent e) {
su.ButtonActionPerformed(e);
}
}
Q2: 求java经典小程序代码
代码如下：
public class HelloWorld {
public static void main(String []args) {
int a = 3, b = 7 ;
System.out.println("Hello World!");
}
public static int f(int a, int b){
return a*a + a*b + b*b;
}
}
结果如下：
Q3: 寻一个比较有趣的JAVA小程序源代码，本人初学JAVA，想根据一个例子自己也做出一个JAVA程序
一般小程序源代码可以淘宝购买，选择自己喜欢的，都是几块钱的。
Q4: VB编写一个抽奖小程序，要求每次抽奖的数字不重复
Dim n As Integer
Dim a()
Private Sub Command1_Click()
If n = 0 Then '第一次点击时执行
m = Val(Text1)
ReDim a(1 To m)
For i = 1 To m '生成数组a，元素为1至m这m个数
a(i) = i
Next
For i = 1 To m - 1 '随机打乱数组a中元素
r = Int(Rnd * m + 1)
tmp = a(i)
a(i) = a(r)
a(r) = tmp
Next
End If
n = n + 1 '计数点击次数
If n Val(Text1) Then '次数超过指定次数，抽奖结束
MsgBox "抽奖结束！"
Exit Sub
End If
Text2 = a(n) '从数组中抽出第n个数，由于数组中是随机排列，所以相当于生成一个随机数，并且不会重复
End Sub
Q5: java 制作抽奖小程序
帮你做了一个，不知是否满意呢？
import java.applet.Applet;
import java.awt.Button;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.util.Random;
import java.util.Vector;
public class Lottery extends Applet {
private static final long serialVersionUID = 1L;
int w,h;
Button ok,out,setup;
String[] msg;
TextField[] gaiLv;
TextField[] jiangPin;
int mx,ml;
int maxNum;
Random ran;
VectorInteger fist;
VectorInteger sec;
VectorInteger third;
VectorInteger lucky;
boolean lot=false;
boolean iserr=false;
boolean issetup=false;
String mesg="输入错误";
String priseMsg="继续努力！";
public void init(){
w=400;
h=220;
mx=20;
ml=40;
ran=new Random();
this.setSize(w, h);
this.setLayout(null);
ok=new Button("抽奖");
out=new Button("退出");
setup=new Button("确认设置");
msg=new String[4];
msg[0]="一等奖";
msg[1]="二等奖";
msg[2]="三等奖";
msg[3]="幸运奖";
gaiLv=new TextField[4];
jiangPin=new TextField[4];
for(int i=0;i4;i++){
gaiLv[i]=new TextField("0.0"+(i+1));
this.add(gaiLv[i]);
gaiLv[i].setBounds(mx+ml, 75+i*26, 60, 18);
jiangPin[i]=new TextField();
this.add(jiangPin[i]);
jiangPin[i].setBounds(mx+ml*3, 75+i*26, 80, 18);
}
this.add(ok);
ok.setBounds(260, 180, 60, 28);
ok.addActionListener(new LotButtonAction(this));
this.add(out);
out.setBounds(330, 180, 60, 28);
out.addActionListener(new LotButtonAction(this));
this.add(setup);
setup.setBounds(110, 180, 80, 24);
setup.addActionListener(new LotButtonAction(this));
}
public void paint(Graphics g){
g.setColor(Color.white);
g.fillRect(0, 0, this.getWidth(), this.getHeight());
g.setColor(new Color(230,255,230));
g.fillRect(0, 0, w, 30);
g.setColor(Color.BLUE);
g.drawString("JAVA抽奖系统", 130, 20);
g.setColor(Color.ORANGE);
g.drawRect(10, 40, 230, 170);
g.setColor(Color.BLACK);
g.drawString("设置", mx, 60);
g.drawString("概率", mx+ml, 60);
g.drawString("奖品", mx+ml*3, 60);
for(int i=0;imsg.length;i++){
g.setColor(new Color(255-(i*30),45,89));
g.drawString(msg[i], 20, 90+i*26);
}
if(lot==true){
g.setColor(new Color(ran.nextInt(255),ran.nextInt(255),ran.nextInt(255)));
if(priseMsg.length()=7){
g.drawString(priseMsg, 260, 100);
}else{
g.drawString(priseMsg.substring(0, 5), 260, 100);
g.drawString(priseMsg.substring(5), 260, 120);
}
}
if(iserr==true){
g.drawString(mesg, 260, 100);
}
}
public void getLucky(){
float firu=1;
float secu=1;
float thiu=1;
float fouu=1;
float minu=1;
if(gaiLv[0].getText().trim().length()1){
firu=Float.parseFloat(gaiLv[0].getText());
if(firu=0||firu=1){
iserr=true;
return;
}
if(firuminu){
minu=firu;
}
}
if(gaiLv[1].getText().trim().length()1){
secu=Float.parseFloat(gaiLv[1].getText());
if(secu=0||secu=1){
iserr=true;
return;
}
if(secuminu){
minu=secu;
}
}
if(gaiLv[2].getText().trim().length()1){
thiu=Float.parseFloat(gaiLv[2].getText());
if(thiu=0||thiu=1){
iserr=true;
return;
}
if(thiuminu){
minu=thiu;
}
}
if(gaiLv[3].getText().trim().length()1){
fouu=Float.parseFloat(gaiLv[3].getText());
if(fouu=0||fouu=1){
iserr=true;
return;
}
if(fouuminu){
minu=fouu;
}
}
if(minu=1||minu=0){
iserr=true;
return;
}
float aNum=1/minu;
maxNum=(int)aNum;
int count=(int)(firu/minu);
if(firu!=1){
fist=getLotteryVec(maxNum,count);
}else{
fist.removeAllElements();
}
count=(int)(secu/minu);
if(secu!=1){
sec=getLotteryVec(maxNum,count);
}else{
sec.removeAllElements();
}
count=(int)(thiu/minu);
if(thiu!=1){
third=getLotteryVec(maxNum,count);
}else{
third.removeAllElements();
}
count=(int)(fouu/minu);
if(fouu!=1){
lucky=getLotteryVec(maxNum,count);
}else{
lucky.removeAllElements();
}
issetup=true;
iserr=false;
}
protected VectorInteger getLotteryVec(int maxNum,int num){
VectorInteger result=new VectorInteger();
for(int i=0;inum;i++){
result.add(ran.nextInt(maxNum));
}
return result;
}
protected int getaNum(){
return ran.nextInt(maxNum);
}
public int isLucky(int pNum){
for(int i=0;ifist.size();i++){
if(fist.get(i)==pNum){
return 1;
}
}
for(int i=0;isec.size();i++){
if(sec.get(i)==pNum){
return 2;
}
}
for(int i=0;ithird.size();i++){
if(third.get(i)==pNum){
return 3;
}
}
for(int i=0;ilucky.size();i++){
if(lucky.get(i)==pNum){
return 4;
}
}
return -1;
}
public void ButtonActionPerformed(ActionEvent e){
String acName=e.getActionCommand();
if(acName.equals("抽奖")){
if(issetup==false){
priseMsg="请先设置参数！";
lot=true;
repaint();
lot=false;
return;
}
lot=true;
priseMsg=getResult(getaNum());
repaint();
// lot=false;
}else if(acName.equals("退出")){
this.setVisible(false);
this.stop();
this.destroy();
System.exit(0);
}else if(acName.equals("确认设置")){
lot=false;
getLucky();
repaint();
}
}
public String getResult(int num){
int resu=isLucky(num);
String result="";
switch(resu){
case -1:
result="继续努力！";
break;
case 1:
result="恭喜你！一等奖!\n获得"+jiangPin[0].getText();
break;
case 2:
result="恭喜你！二等奖!\n获得"+jiangPin[1].getText();
break;
case 3:
result="恭喜你！三等奖!\n获得"+jiangPin[2].getText();
break;
case 4:
result="恭喜你！幸运奖!\n获得"+jiangPin[3].getText();
break;
default:
result="继续努力！";
}
return result+num;
}
}
class LotButtonAction implements java.awt.event.ActionListener{
Lottery su;
public LotButtonAction(Lottery bun){
this.su=bun;
}
@Override
public void actionPerformed(ActionEvent e) {
su.ButtonActionPerformed(e);
}
}
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