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

Vector<Integer> fist

Vector<Integer> sec

Vector<Integer> third

Vector<Integer> 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=0i<4i++){

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=0i<msg.lengthi++){

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(firu<minu){

minu=firu

}

}

if(gaiLv[1].getText().trim().length()>1){

secu=Float.parseFloat(gaiLv[1].getText())

if(secu<=0||secu>=1){

iserr=true

return

}

if(secu<minu){

minu=secu

}

}

if(gaiLv[2].getText().trim().length()>1){

thiu=Float.parseFloat(gaiLv[2].getText())

if(thiu<=0||thiu>=1){

iserr=true

return

}

if(thiu<minu){

minu=thiu

}

}

if(gaiLv[3].getText().trim().length()>1){

fouu=Float.parseFloat(gaiLv[3].getText())

if(fouu<=0||fouu>=1){

iserr=true

return

}

if(fouu<minu){

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 Vector<Integer> getLotteryVec(int maxNum,int num){

Vector<Integer> result=new Vector<Integer>()

for(int i=0i<numi++){

result.add(ran.nextInt(maxNum))

}

return result

}

protected int getaNum(){

return ran.nextInt(maxNum)

}

public int isLucky(int pNum){

for(int i=0i<fist.size()i++){

if(fist.get(i)==pNum){

return 1

}

}

for(int i=0i<sec.size()i++){

if(sec.get(i)==pNum){

return 2

}

}

for(int i=0i<third.size()i++){

if(third.get(i)==pNum){

return 3

}

}

for(int i=0i<lucky.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)

}

}

控制台小游戏 class YZDEL\r\n{\r\n public static void main(String[] args)\r\n {\r\njava.util.Random Shiji = new java.util.Random()\r\n java.util.Scanner Shuru = new java.util.Scanner(System.in)\r\n java.util.Scanner Nandu = new java.util.Scanner(System.in)\r\n int YingxHP = 20\r\n int YingxMP = 0\r\n int MogHP = 20\r\n int MogMP = 0\r\n int MogDo = 0\r\n int fangyu = 0\r\n System.out.println("┏━━━━_┏━━┣┣┓　_　┓┏━┳━┳┓┓━┓　")\r\n System.out.println("┏┣━━━┓┏━━┣┣┓　┃┏　┃　┃┓┃　_　")\r\n System.out.println("┣┣━━━┫_━━┻__　┃_┓┃　┃_┏━┣━━┓")\r\n System.out.println("┣┣━━━┫┏━━━━┓_━━┣━┛┗━┻━┻┛┃┃")\r\n System.out.println("┏┣━━━┓┣━━━━┫　┃┃┃┗__┃┃┣━_")\r\n System.out.println("　┛┗_┗━━━━_┗___━━┛┛┗━__━┛")\r\n System.out.println()\r\n System.out.println(" 作者:天狐空幻")\r\n System.out.println()\r\n System.out.println("说明:勇者的 *** 作方式为以下所示:")\r\n System.out.println(" 使用攻击需消耗1MP 伤害1HP")\r\n System.out.println(" 使用蓄力可增加1MP 伤害0HP")\r\n System.out.println(" 使用躲闪需消耗0MP 伤害0HP 躲避攻击")\r\n System.out.println(" 使用重击需消耗3MP 伤害2HP 防御无效")\r\n System.out.println(" 恶龙攻击力高， 注意防御是取胜的关键")\r\n System.out.println(" 恶龙MP达到4时可能会放出火焰无法躲避")\r\n System.out.println(" 准备说明完毕,那么让我们来挑战恶龙吧！")\r\n System.out.println("==================================")\r\n //难度选择\r\n System.out.println("请选择难度")\r\n System.out.println("1.娱乐 2.挑战 3.噩梦")\r\n int ND = Nandu.nextInt()\r\n System.out.println("==================================")\r\n while(true) \r\n { \r\n //HP，MP的显示 \r\n System.out.print("勇者: ")\r\n System.out.print(" HP ")\r\n for(int x=YingxHPx>0x--) System.out.print("*")\r\n System.out.print(" "+YingxHP)\r\n System.out.println()\r\n System.out.print(" ")\r\n System.out.print(" MP ")\r\n for(int x=YingxMPx>0x--) System.out.print("*")\r\n System.out.print(" "+YingxMP)\r\n System.out.println()\r\n System.out.print("恶龙: ")\r\n System.out.print(" HP ")\r\n for(int y=MogHPy>0y--) System.out.print("*")\r\n System.out.print(" "+MogHP)\r\n System.out.println()\r\n System.out.print(" ")\r\n System.out.print(" MP ")\r\n for(int y=MogMPy>0y--) System.out.print("*")\r\n System.out.print(" "+MogMP)\r\n System.out.println()\r\n System.out.println("==================================")\r\n //胜利判定 \r\n if(YingxHP2&&MogMP>2) MogDo = 2\r\n else if(MogMP0) MogDo=2 \r\n if(Do==2&&MogMP==0) MogDo=0\r\n if(Do==3&&MogMP=4) MogDo=3}//变态判定。。 \r\n //战斗分析\r\n //防御 \r\n if(Do==3) {fangyu=1System.out.println("你灵巧的躲避攻击！")}\r\nif(MogDo==1) {fangyu=1System.out.println("恶龙进行防御！")}\r\n //角色判定 \r\n if(Do==1&&YingxMP==0) {System.out.println("MP不足！")}\r\n if(Do==1&&YingxMP>0) {\r\nif(fangyu==0) {MogHP=MogHP-1YingxMP=YingxMP-1System.out.println("你发动攻击！")}\r\nif(fangyu==1) {YingxMP=YingxMP-1System.out.println("你的攻击被格挡！")}} \r\n if(Do==2) {YingxMP=YingxMP+1System.out.println("你进行蓄力！")}\r\n if(Do==4&&YingxMP2) {MogHP=MogHP-2YingxMP=YingxMP-3System.out.println("你发动重击！")}\r\n if(Do>4) System.out.println("你不知所措...")\r\n //敌人判定 \r\n if(MogDo==2&&MogMP==0) {System.out.println("恶龙在发呆！")}\r\n if(MogDo==2&&MogMP>0) {\r\nif(fangyu==0) {YingxHP=YingxHP-2MogMP=MogMP-1System.out.println("恶龙发动攻击！")}\r\nif(fangyu==1) {MogMP=MogMP-1System.out.println("恶龙的攻击被躲开了！")}} \r\n if(MogDo==0) {MogMP=MogMP+1System.out.println("恶龙进行蓄力！")} \r\n if(MogDo==3&&MogMP3) {YingxHP=YingxHP-4MogMP=MogMP-4System.out.println("恶龙发动火焰吐吸！躲避不能！")} \r\n //结束 \r\n fangyu = 0\r\n MogDo = 0\r\n System.out.println("____________________")\r\n System.out.println()\r\n System.out.println("==================================") }\r\n }\r\n}

有三个问题吧：

import javax.swing.JApplet

是 extends JApplet

应该加一个name.addActionListener(this)

下面是修改后的代码，我运行过了

import java.awt.*

import javax.swing.JApplet

import java.awt.event.*

public class Applet1 extends JApplet implements ActionListener{

TextField name=new TextField(30)

TextField pw=new TextField(30)

TextField pw1=new TextField(30)

Label la1=new Label()

Label la2=new Label()

Label la3=new Label()

public void actionPerformed(ActionEvent e) {

if(e.getSource()==pw)

pw1.setText(pw.getText())

else if(e.getSource()==name)

name.setText("i know :"+name.getText())

}

public void init(){

this.setLayout(new FlowLayout())

la1.setText("姓名：")

this.add(la1)

this.add(name)

la2.setText("密码：")

this.add(la2)

pw.setEchoChar('*')

this.add(pw)

pw.addActionListener(this)

name.addActionListener(this)

la3.setText("显示密码：")

this.add(la3)

this.add(pw1)

}

}

呵呵！

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