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java大转盘代码 java大转盘抽奖

求Java实现转盘转动功能,抽奖,坐等

转盘转动就是图片,定义一个随机数random;

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if(random==1){

画中奖的图片

}else{

画不中奖的图片}

求一个简单的JAVA游戏代码,100行左右,谢谢!

import java.awt.Dimension;

import java.awt.Graphics;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

public class Painter extends JFrame{

/**

*

*/

private static final long serialVersionUID = 8160427604782702376L;

CanvasPanel canvas = new CanvasPanel();;

public Painter() {

super("Star");

this.add(canvas);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.pack();

this.setResizable(false);

this.setLocationRelativeTo(null);

this.setVisible(true);

}

public static void main(String[] args) {

new Painter();

}

}

class CanvasPanel extends JPanel implements ActionListener{

/**

*

*/

private static final long serialVersionUID = -4642528854538741028L;

private JButton[] btn = new JButton[4];

private String[] btn_name = {"+", "-", "R", "L"};

private int center_x = 200, center_y = 200, radius = 100, degree = 0;

public CanvasPanel() {

this.setPreferredSize(new Dimension(400, 500));

this.setLayout(null);

for(int i = 0; i 4; i++) {

btn[i] = new JButton(btn_name[i]);

btn[i].setBounds(160 + i * 60, 425, 50, 50);

btn[i].addActionListener(this);

this.add(btn[i]);

}

}

@Override

public void paintComponent(Graphics g) {

super.paintComponent(g);

for(int i = 0; i 5; i++) {

g.drawLine( (int) (center_x + radius * Math.sin(Math.toRadians(degree + 72 * i))),

(int) (center_y - radius * Math.cos(Math.toRadians(degree + 72 * i))),

(int) (center_x + radius * Math.sin(Math.toRadians(degree + 72 * i + 144))),

(int) (center_y - radius * Math.cos(Math.toRadians(degree + 72 * i + 144))));

}

}

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

if(e.getActionCommand() == "+") {

if(radius 200)

radius += 2;

repaint();

} else if(e.getActionCommand() == "-") {

if(radius 0)

radius -= 2;

repaint();

} else if(e.getActionCommand() == "R") {

degree = (degree + 2) % 360;

repaint();

} else if(e.getActionCommand() == "L") {

degree = (degree - 2) % 360;

repaint();

}

}

}

谁能帮忙补充完整下列JAVA程序代码?

class A

{

//声明一个float型实例变量a

//声明一个float型类变量b,即static变量b

private float a;

private static float b;

void setA(float a)

{

//将参数a的值赋值给成员变量a

this.a = a;

}

void setB(float b)

{

//将参数b的值赋值给成员变量b

this.b = b;

}

float getA()

{

return a;

}

float getB()

{

return b;

}

void inputA()

{

System.out.println(a);

}

static void inputB()

{

System.out.println(b);

}

}

public class Example

{

public static void main(String args[])

{

//通过类名操作类变量b,并赋值100

//通过类名调用方法inputB()

A.b = 100;

A.inoutB();

A cat=new A();

A dog=new A();

//cat调用方法setA(int a)将cat的成员 a的值设置为200

cat.setA(200);

// cat调用方法setB(int B)将cat的成员 b的值设置400

cat.setB(400);

//dog调用方法setA(int a)将dog的成员 a的值设置为150

dog.setA(150);

//dog调用方法setB(int b)将dog的成员 b的值设置为300

dog.setB(300);

//cat调用inputA()

//cat调用inputB()

//dog调用inputA()

//dog调用inputB()

cat.inputA();

cat.inputB();

dog.inputA();

dog.inputB();

}

}

Java编写代码,在D盘下创建abc文件夹,然后在abc文件夹中创建abc文件,求详细代码?!

Java代码:

import java.io.File;

import java.io.IOException;

public class Test10 {

public static void main(String[] args) {

//创建“abc”文件夹

String pathName = "d:\\abc";

File path = new File(pathName);

path.mkdir();

//创建“abc”文件

String fileName = "d:\\abc\\abc";

File file = new File(fileName);

try {

file.createNewFile();

}

catch (IOException e) {

e.printStackTrace();

}

}

}


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