java紅綠燈_用java編寫交通信號燈

Ⅰ java 線程實現一個紅綠燈問題

關鍵是啟動一個線程式控制制顏色。代碼如下。

import java.applet.Applet;
import java.awt.Color;
import java.awt.Graphics;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheledExecutorService;
import java.util.concurrent.TimeUnit;

public class Signal extends Applet {
int width = 200, height = 240;
int w = 50, h = 50;
int x = (width - w) / 2, y1 = (height - h * 3) / 3, y2 = y1 + h, y3 = y2 + h;
Color c = Color.RED;

@Override
public void init() {
ScheledExecutorService exec = Executors.newScheledThreadPool(1);
exec.scheleAtFixedRate(new Runnable() {
@Override
public void run() {
if (c == Color.RED) {
c = Color.YELLOW;
} else if (c == Color.YELLOW) {
c = Color.GREEN;
} else if (c == Color.GREEN) {
c = Color.RED;
}
repaint();
}
}, 5, 5, TimeUnit.SECONDS);
}

@Override
public void paint(Graphics g) {
setBackground(Color.white);

// all gray
g.setColor(Color.LIGHT_GRAY);
g.fillOval(x, y1, w, h);
g.fillOval(x, y2, w, h);
g.fillOval(x, y3, w, h);

if (c == Color.RED) {
g.setColor(Color.RED);
g.fillOval(x, y1, w, h);
} else if (c == Color.YELLOW) {
g.setColor(Color.YELLOW);
g.fillOval(x, y2, w, h);
} else if (c == Color.GREEN) {
g.setColor(Color.GREEN);
g.fillOval(x, y3, w, h);
}
}
}

Ⅱ 使用java多線程和圖形編程，完成紅綠燈模擬軟體

boolean flag = true;
while(flag){
//綠燈顯示

//sleep(3000);

//黃燈顯示

sleep(3000);

//紅燈顯示

sleep(3000);
}

如果點擊結束，退出while

Ⅲ Java紅綠燈求大神！！急啊

importjava.awt.Color;
importjava.awt.Container;
importjava.awt.Dimension;
importjava.awt.FlowLayout;
importjava.awt.Graphics;
importjava.awt.event.ActionEvent;
importjava.awt.event.ActionListener;
importjavax.swing.JButton;
importjavax.swing.JFrame;
importjavax.swing.JPanel;
publicclassWayextendsJPanel{
JButtonred;
publicWay(){
red=newJButton("換燈");
setBackground(Color.yellow);
setSize(newDimension(320,260));
setPreferredSize(newDimension(320,260));
JPanelbtnPanel=newJPanel();
btnPanel.setLayout(newFlowLayout());
red.setLayout(newFlowLayout());//將單選按鈕加入按鈕面板
btnPanel.add(red);
add(red);
}
privatevoidlightRed(Graphicsg){
g.setColor(Color.red);
g.fillOval(getWidth()/2,30,15,15);
g.setColor(Color.black);
g.fillOval(getWidth()/2,50,15,15);
g.fillOval(getWidth()/2,70,15,15);
}
privatevoidlightYellow(Graphicsg){
g.setColor(Color.yellow);
g.fillOval(getWidth()/2,50,15,15);
g.setColor(Color.black);
g.fillOval(getWidth()/2,30,15,15);
g.fillOval(getWidth()/2,70,15,15);
}
privatevoidlightGreen(Graphicsg){
g.setColor(Color.green);
g.fillOval(getWidth()/2,70,15,15);
g.setColor(Color.black);
g.fillOval(getWidth()/2,30,15,15);
g.fillOval(getWidth()/2,50,15,15);
}
protectedvoidpaintComponent(Graphicsg){
super.paintComponents(g);
Waya=newWay();
g.clearRect(0,0,getWidth(),getHeight());
g.drawRect(getWidth()/2,30,30,80);
red.addActionListener(newActionListener(){
intf1=0;
publicvoidactionPerformed(ActionEvente){
Graphicsg=getGraphics();
switch(f1){
case0:
a.lightRed(g);
break;
case1:
a.lightYellow(g);
break;
case2:
a.lightGreen(g);
break;
}
f1++;
if(f1>2)f1=0;
};
});
}
publicstaticvoidmain(String[]args){
JFramefr=newJFrame("郵件界面模擬");
fr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//點擊x結束程序
ContainercontentPane=fr.getContentPane();
//得到窗口內容面板
contentPane.add(newWay());
fr.pack();
fr.setVisible(true);//設置窗口可見
}
}

大致幫你改了下，不知道符合不符合你的要求，有問題請追問

Ⅳ 【急求】高手幫忙編寫紅綠燈的JAVA程序，有圖形界面燈會跳的那種！

看一下這個行不行？
--------------------------------------------------------------------------------------------------------------
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class App extends JFrame {
public App() {
setDefaultCloseOperation(EXIT_ON_CLOSE);
setSize(107, 252);
setLocationRelativeTo(null);
getContentPane().setLayout(new BorderLayout(0, 0));
MyColorPanel panel = new MyColorPanel();
getContentPane().add(panel, BorderLayout.CENTER);
setVisible(true);
new Thread(panel).start();
}
public static void main(String[] args) {
new App();
}
}
class MyColorPanel extends JPanel implements Runnable {
private Color[] colors = { Color.RED, Color.YELLOW, Color.GREEN };
private int[] y = { 10, 70, 130 };
private int[] time = { 3, 1, 5 };
private int index = 2;
protected void paintComponent(Graphics g) {
super.paintComponent(g);
int width = 50;
int x = 30;
for (int i = 0; i < y.length; i++) {
g.fillOval(x, y[i], width, width);
}
g.setColor(colors[index]);
g.fillOval(x, y[index], width, width);
}
public void run() {
while (true) {
try {
Thread.sleep(time[index] * 1000);
index--;
repaint();
if (index < 0) {
index = 2;
}
} catch (Exception e) {
}
}
}
}

Ⅳ 求一個簡易的JAVA程序---紅綠燈，有兩個部分，用下拉表控制燈的顏色，選擇紅，畫布中的燈就變紅的那種

按照你的要求，寫出的程序如下：
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class TrafficLight {
JFrame jf=new JFrame("Traffic Light");
JPanel jp=new JPanel();
JComboBox jcb=new JComboBox();
public TrafficLight(){
jcb.addItem("紅燈");
jcb.addItem("黃燈");
jcb.addItem("綠燈");
jcb.addItemListener(new JComboBoxListener());
jf.add(jcb,BorderLayout.NORTH);
jf.add(jp,BorderLayout.CENTER);

jf.setSize(400,400);
jf.setVisible(true);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}
public static void main(String[] args) {
// TODO Auto-generated method stub
new TrafficLight();
}
class JComboBoxListener implements ItemListener{
@Override
public void itemStateChanged(ItemEvent ie) {
Graphics g=jf.getGraphics();
if(ie.getItem().equals("紅燈")){
g.setColor(Color.RED);
g.fillOval(200, 200, 100, 100);
}else if(ie.getItem().equals("黃燈")){
g.setColor(Color.YELLOW);
g.fillOval(200, 200, 100, 100);
}else if (ie.getItem().equals("綠燈")){
g.setColor(Color.GREEN);
g.fillOval(200, 200, 100, 100);
}
}
}
}

Ⅵ java 紅綠燈代碼

給程序一個變數tag 用來記錄按鍵次數~~

tag%2==0時為綠
tag%2==1時為紅
tag%2==2時為黃

Ⅶ 請幫我看下這個JAVA的程序(簡易紅綠燈)

發現你的程序窗體大小每改變一次，都會加上三個RadioButtons。

Ⅷ 用java編寫交通信號燈

按照你的要求編寫的紅綠燈程序，你看看吧，比較簡單。
完整的程序如下：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.Graphics;
public class TrafficLight extends JFrame{
JRadioButton jrbYellow,jrbGreen,jrbRed;
int flag=0;
jpNewPanel jpNewPanel;
public static void main(String[] args){
TrafficLight frame=new TrafficLight();
frame.setSize(500,200);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setTitle("TrafficLight");
frame.setVisible(true);
}
public TrafficLight(){
jpNewPanel=new jpNewPanel();
add(jpNewPanel,BorderLayout.CENTER);
JPanel jpRadioButtons=new JPanel();
jpRadioButtons.setLayout(new GridLayout(1,3));
jpRadioButtons.add(jrbYellow=new JRadioButton("Yellow"));
jpRadioButtons.add(jrbGreen=new JRadioButton("Green"));
jpRadioButtons.add(jrbRed=new JRadioButton("Red"));
add(jpRadioButtons,BorderLayout.SOUTH);
ButtonGroup group=new ButtonGroup();
group.add(jrbYellow);
group.add(jrbGreen);
group.add(jrbRed);

jrbYellow.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
flag=2;
jpNewPanel.repaint();
}
});
jrbGreen.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
flag=1;
jpNewPanel.repaint();
}
});
jrbRed.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
flag=3;
jpNewPanel.repaint();
}
});
}
class jpNewPanel extends JPanel{
protected void paintComponent(Graphics g){
super.paintComponent(g);
g.drawRect(0,0,40,100);
g.drawOval(10,10,20,20);
g.drawOval(10,40,20,20);
g.drawOval(10,70,20,20);
if(flag==1){
g.setColor(Color.GREEN);
g.fillOval(10, 70, 20, 20);
}
else if(flag==2){
g.setColor(Color.YELLOW);
g.fillOval(10, 40, 20, 20);
}
else if(flag==3){
g.setColor(Color.RED);
g.fillOval(10, 10, 20, 20);
}
}
}
}

Ⅸ java 紅綠燈 Thread 要求運行時下邊出現紅燈亮黃燈暗綠燈暗文字按照紅黃綠順序循環出現10次即可！

如果是使用多線程來做分別有紅 \黃 \ 綠三個線程,是無法控制輸出的順序的,多線程的概念里有CPU隨機執行的.
使用單線程式控制制吧用System.println.out() 列印還差不多
Code:
public class TrafficLightThread implements Runnable {

final static String RED = "紅燈亮 ";
final static String YELLOW = "黃燈暗";
final static String GREEN = "綠燈暗";

public void run() {
for (int i = 10; i > 0; i--) {
System.out.println("---第"+i+"次---");
System.out.println(RED);
System.out.println(YELLOW);
System.out.println(GREEN);
}
}

public static void main(String[] args) {
new Thread(new TrafficLightThread()).start();
}
}

Ⅹ java控制紅綠燈及模擬車輛運動

寫兩個程序分別模擬紅綠燈和汽車：
1）紅綠燈程序以報文形式通知汽車程序；
2）汽車程序需要用多線程來實現。
3）紅綠燈程序用個循環，每隔n分鍾紅綠燈轉換，同時通知汽車程序；

導航:首頁 > 編程語言 > java紅綠燈

java紅綠燈

與java紅綠燈相關的資料