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java燈泡動畫的源代碼 eclipse中燈泡+錯什么意思

使用Java做一個走馬燈,源代碼?

import?java.awt.Color;

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import?java.awt.Dimension;

import?java.awt.Font;

import?java.awt.HeadlessException;

import?java.awt.Point;

import?java.awt.event.ActionEvent;

import?java.awt.event.ActionListener;

import?java.awt.event.ComponentAdapter;

import?java.awt.event.ComponentEvent;

import?javax.swing.JFrame;

import?javax.swing.JLabel;

import?javax.swing.JOptionPane;

import?javax.swing.JViewport;

import?javax.swing.Timer;

public?class?Test84?extends?JFrame?{

private?Timer?timer;

private?JLabel?view;

private?JViewport?window;

public?static?void?main(String[]?args)

{

JFrame?frm?=?new?Test84("跑馬燈");

frm.setDefaultCloseOperation(EXIT_ON_CLOSE);

frm.pack();

frm.setVisible(true);

}

public?Test84(String?title)?throws?HeadlessException

{

super(title);

initComponents();

addComponentListener(new?ComponentAdapter()?{

public?void?componentResized(ComponentEvent?e)

{

anchor?=?new?Point();

anchor.x?=?-window.getExtentSize().width;

timer.start();

}

});

timer?=?new?Timer(100,?new?ActionListener()?{

public?void?actionPerformed(ActionEvent?e)

{

animate();

}

});

timer.setInitialDelay(0);

}

private?void?initComponents()

{

String?s?=?JOptionPane.showInputDialog(null,?"請輸入要實現(xiàn)效果的文字:");

view?=?new?JLabel(s);

view.setFont(Font.decode("Dialog-BOLD-36"));

view.setForeground(Color.BLUE);

window?=?new?JViewport();

window.setView(view);

getContentPane().add(window);

}

Point?anchor;

private?void?animate()

{

Dimension?extSize?=?window.getExtentSize();

Dimension?viewSize?=?view.getPreferredSize();

anchor.x?+=?5;//設(shè)置移動的速度

window.setViewPosition(anchor);

if?(anchor.x??viewSize.width)

anchor.x?=?-extSize.width;

}

}

如何用java來實現(xiàn)燈泡異常問題

模擬了一下。。設(shè)置成B1按下時B4彈起,B4按下時B1彈起,不然有的時候電源是開是關(guān)不好判定。。如果B1/B4是一個按鈕就好了 = =。為方便觀察,間隔時間設(shè)為0.5s。另外加了兩個按鈕用來控制燈泡1、2是否故障。import java.awt.*;

import java.awt.event.*;

import javax.swing.*;class Bulb extends JFrame

{ private final int INTER_SECOND = 500; // 間隔時間 private BulbButton b1 = new BulbButton("B1");

private BulbButton b2 = new BulbButton("B2");

private BulbButton b3 = new BulbButton("B3");

private BulbButton b4 = new BulbButton("B4"); private BulbLight l1 = new BulbLight(1);

private BulbLight l2 = new BulbLight(2); private JButton bb1 = new BuldStateButton(l1);

private JButton bb2 = new BuldStateButton(l2); private JLabel state = new JLabel("關(guān)閉"); private CheckLightThread thread; public Bulb() {

this.setTitle("燈泡模擬");

this.setSize(300, 200);

this.setLayout(new GridLayout(4, 1)); this.add(new JPanel() {

{

this.setLayout(new FlowLayout(FlowLayout.CENTER));

this.add(new JLabel("電源狀態(tài):"));

this.add(state);

}

}); this.add(new JPanel() {

{

this.setLayout(new FlowLayout(FlowLayout.CENTER));

this.add(l1);

this.add(l2);

}

}); this.add(new JPanel() {

{

this.setLayout(new FlowLayout(FlowLayout.CENTER));

this.add(b1);

this.add(b2);

this.add(b3);

this.add(b4);

}

}); this.add(new JPanel() {

{

this.setLayout(new FlowLayout(FlowLayout.CENTER));

this.add(bb1);

this.add(bb2);

}

}); setButtons(); this.setVisible(true);

} private void setButtons() {

b2.setEnabled(false);

b3.setEnabled(false);

b4.setSelected(true); b1.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

b1.changeState();

if(b1.isSelected()) {

b4.setSelected(false);

b2.setEnabled(true);

b3.setEnabled(true);

} else {

b2.setSelected(false);

b3.setSelected(false);

b4.setSelected(true);

b2.setEnabled(false);

b3.setEnabled(false);

}

changeSystemState();

}

}); b2.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

if(!b1.isSelected() b4.isSelected()) return; // 在電源關(guān)閉狀態(tài)下,B2和B3按鈕不起作用

b2.changeState();

if(b2.getCount() b3.getCount()) { // 如果B2被按下的次數(shù)比B3被按下的次數(shù)多,L1亮

l1.change(true);

l2.change(false);

}

}

}); b3.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

if(!b1.isSelected() b4.isSelected()) return; // 在電源關(guān)閉狀態(tài)下,B2和B3按鈕不起作用

b3.changeState();

if(b3.getCount() = b2.getCount()) { // 如果B2被按下的次數(shù)比B3被按下的次數(shù)少,L2亮

l1.change(false);

l2.change(true);

}

}

}); b4.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

b4.changeState();

if(b4.isSelected()) {

b1.setSelected(false);

b2.setSelected(false);

b3.setSelected(false);

b2.setEnabled(false);

b3.setEnabled(false);

} else {

b1.setSelected(true);

b2.setEnabled(true);

b3.setEnabled(true);

}

changeSystemState();

}

});

} private void changeSystemState() {

if(!b1.isSelected() b4.isSelected()) { // 在電源關(guān)閉狀態(tài)下,燈應(yīng)不亮

state.setText("關(guān)閉");

l1.change(false);

l2.change(false);

thread.pause();

}

if(b1.isSelected() !b4.isSelected()) { // 從最近一次電源打開狀態(tài)算起

state.setText("開啟");

b2.clearCount();

b3.clearCount();

thread = new CheckLightThread();

thread.start();

}

} public static void main(String[] args)

{

new Bulb();

} private class BulbButton extends JToggleButton

{

private int count = 0; public BulbButton(String text) {

super(text);

} public void changeState() {

if(isSelected()) {

++count;

}

} public void clearCount() {

count = 0;

} public int getCount() {

return count;

} } private class BulbLight extends JPanel

{ private int id; private boolean bad; private boolean lightState; private JLabel label; private JLabel state = new JLabel("【暗】"); private JLabel state2 = new JLabel("-正常"); public BulbLight(int id) {

this.id = id;

label = new JLabel("燈泡" + id);

this.add(label);

this.add(state);

this.add(state2);

} public int getId() {

return id;

} public void light() {

this.state.setText("【" + ("【暗】".equals(this.state.getText())?"亮":"暗") + "】");

} public void change(boolean light) {

if(bad)return;

lightState = light;

this.state.setText("【" + (lightState?"亮":"暗") + "】");

} public boolean isBad() {

return bad;

} public void setState(boolean bad) {

this.bad = bad;

state2.setText((bad?"-故障":"-正常"));

if(bad) {

this.state.setText("【暗】");

} else {

this.state.setText("【" + (lightState?"亮":"暗") + "】");

}

} } private class BuldStateButton extends JButton implements ActionListener

{

private BulbLight light; public BuldStateButton(BulbLight light) {

super("破壞燈泡" + light.getId());

this.light = light;

this.addActionListener(this);

} public void actionPerformed(ActionEvent e) {

if(("破壞燈泡" + light.getId()).equals(this.getActionCommand())) {

this.setText("修復(fù)燈泡" + light.getId());

light.setState(true);

}

else {

this.setText("破壞燈泡" + light.getId());

light.setState(false);

}

}

} private class CheckLightThread extends Thread

{ private boolean runFlag = true; public void pause() {

this.runFlag = false;

} public void run() {

while(runFlag) {

try

{

if (l1.isBad() !l2.isBad())

{

l2.light();

}

if (!l1.isBad() l2.isBad())

{

l1.light();

}

sleep(INTER_SECOND);

} catch (Exception e) {

System.out.println(e.getMessage());

}

}

}

}

}截圖如下:

java創(chuàng)建燈泡類的一道題

public class Light {

boolean state;//燈的當(dāng)前狀態(tài),false為關(guān),true為開

int brightness;//燈的亮度,數(shù)值為0~100

/*初始化燈為關(guān)閉狀態(tài),亮度為0*/

public Light()

{

this.state=false;

this.brightness=0;

}

/*開關(guān)方法*/

public void turn()

{

if(this.state==true)

this.state=false;

else this.state=true;

}

/*獲取狀態(tài)方法*/

public boolean getState() {

return state;

}

/*獲取燈泡亮度*/

public int getBrightness() {

return brightness;

}

/*調(diào)解燈泡亮度*/

public void setBrightness(int bn) {

if(this.state==true)//判斷燈泡狀態(tài)

if(bn=0bn=100) {//判斷亮度調(diào)節(jié)值是不是合法

this.brightness = bn;

if(bn==0)//判斷亮度是不是調(diào)到0

this.state=false;

}

}

public static void main(String[] args)

{

Light light=new Light();

light.turn();

System.out.println("當(dāng)前燈泡狀態(tài):"+light.getState());

light.setBrightness(0);

System.out.println("當(dāng)前燈泡亮度:"+light.getBrightness());

System.out.println("當(dāng)前燈泡狀態(tài):"+light.getState());

light.setBrightness(10);

System.out.println("當(dāng)前燈泡亮度:"+light.getBrightness());

System.out.println("當(dāng)前燈泡狀態(tài):"+light.getState());

light.turn();

System.out.println("當(dāng)前燈泡狀態(tài):"+light.getState());

light.setBrightness(10);

System.out.println("當(dāng)前燈泡亮度:"+light.getBrightness());

System.out.println("當(dāng)前燈泡狀態(tài):"+light.getState());

}

}

我建議你學(xué)習(xí)一下面向?qū)ο缶幊痰乃枷敕椒?/p>

用eclipse編寫Java源程序時,出現(xiàn)一個黃色的燈泡和感嘆號是怎么回事???請前輩們指導(dǎo)下,謝謝了!

這是警告的意思。一般只要你用集合沒有用泛型就會出來。或者有些過時的方法也會這樣的情況發(fā)生。


名稱欄目:java燈泡動畫的源代碼 eclipse中燈泡+錯什么意思
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