java特效的代码 java优雅代码

Java实现多种幻灯片切换特效(附源码)

功能说明 代码实现了多种幻灯片变换特效 如 淡入淡出 缓慢覆盖 旋转覆盖等 多种变换效果

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功能实现

图片加载类ImageLoader实现

)用阻塞队列存储要图片 BlockingQueue images = new ArrayBlockingQueue( )

)用图片eof表示图片队列结束 Image eof = new WritableImage( )

)循环读取指定图片 由于是阻塞队列 所以当队列满的时候线程会自动阻塞

public void run() {

int id = ;

try {

while (true) {

String path = resources[id];

InputStream is = getClass() getResourceAsStream(path)

if (is != null) {

Image image = new Image(is width height true true)

if (!image isError()) {

images put(image)

}

}

id++;

if (id = resources length) {

id = ;

}

}

} catch (Exception e) {

} finally {

if (!cancelled) {

try {

images put(eof)

} catch (InterruptedException e) {

}

}

}

}

特效实现 以弧形切换图片为例 首先定义LengthTransition变化特效 设置变化时间 以及弧度数跟时间的变化关系

class LengthTransition extends Transition {

Arc arc;

public LengthTransition(如碰孙Duration d Arc arc) {

this arc = arc;

setCycleDuration(d)

}

@Override

protected void interpolate(double d) {

arc setLength(d * )

}

}

然后设置图片层叠效果

group setBlendMode(BlendMode SRC_OVER)

next setBlendMode(BlendMode SRC_ATOP)

以及之前那张图片的吵隐淡出特效

FadeTransition ft = new FadeTransition(Duration seconds( ) mask )

最后同时执行这两个特效渣链

ParallelTransition pt = new ParallelTransition(lt ft)

效果图

求java公告栏特效代码

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

public class Test{

private JFrame frame;

private String scrolledText;

private String str ="滚动文字 Demo";

public static void main(String args[]) {

try{

Test window = new Test();

window.frame.setVisible(true);

}

catch(Exception e){

e.printStackTrace();

}

}

public Test(){

initialize();

}

private void initialize(){

frame.setBounds(100, 100, 500, 375);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

final JPanel panel = new JPanel();

panel.setBackground(Color.WHITE);

panel.setLayout(new BorderLayout());

frame.getContentPane().add(panel, BorderLayout.NORTH);

final JLabel label = new JLabel();

label.setText("New JLabel");

panel.add(label);

label_scrolledText(label);

frame.addComponentListener(

new ComponentAdapter(){

public void componentResized(ComponentEvent arg0){

label_scrolledText(label);

}

});

}

public void label_scrolledText(JLabel label) {

this.scrolledText = this.str;

label.setText(scrolledText);

FontMetrics metrics = label.getFontMetrics(label.getFont());

int textW = metrics.stringWidth(label.getText());

Dimension frameSize = frame.getSize();

for (int i = 1; i = (frameSize.width - textW) / 3 - 3; i++)

scrolledText += " ";

label.setText(scrolledText);

Thread thread = new Thread(new TextChanger(label));

thread.start();

}

}

java.lang.NullPointerException

at Test.initialize(Test.java:26)

at Test.init(Test.java:23)

at Test.main(Test.java:16)

跨年特效代码

package love;import java.applet.Applet;import java.awt.Color;import java.awt.Graphics;import java点虐 .URL;import java.util.Random;/*** 烟花* @author enjoy**/@SuppressWarnings("serial")public class Q extends Applet implements Runnable {public int speed, variability, Max_Number, Max_Energy, Max_Patch,Max_Length, G;public String sound;private int width, height;               private Thread thread = null;               private BeaClassDemo bcd[];               public void init() {                       int i;this.setSize(1900, 900);       腊老         width = getSize().width - 1;height = getSize().height - 1;speed = 1;     芦局毁                   // 烟花绽放的速度variability = 10;Max_Number = 980;                    // 可发出烟陪备花的最大数目Max_Energy = width + 50;Max_Patch = 90;                    // 最大的斑点数Max_Length = 90;                    // 斑点的最大距离G = 150;                            // 向地面弯曲的力度bcd = new BeaClassDemo[Max_Number];           for (i = 0; i Max_Number; i++)bcd[i] = new BeaClassDemo(width, height, G);   }public void start() {       if (thread == null) {thread = new Thread(this);thread.start();}}@SuppressWarnings("deprecation")public void stop() {       if (thread != null) {thread.stop();thread = null;}}@SuppressWarnings({ "unused", "static-access" })public void run() {int i;int E = (int) (Math.random() * Max_Energy * 3 / 4) + Max_Energy / 4 + 1;int P = (int) (Math.random() * Max_Patch * 3 / 4)    // 烟花的斑点数+ Max_Patch / 4 + 1;int L = (int) (Math.random() * Max_Length * 3 / 4)    // 烟花可发射出的距离+ Max_Length / 4 + 1;long S = (long) (Math.random() * 10000);           boolean sleep;                               Graphics g = getGraphics();URL u = null;while (true) {try {thread.sleep(1000 / speed);} catch (InterruptedException x) {}sleep = true;for (i = 0; i Max_Number; i++)sleep = sleep bcd[i].sleep;if (sleep Math.random() * 100 variability) {E = (int) (Math.random() * Max_Energy * 3 / 4) + Max_Energy / 4+ 1;P = (int) (Math.random() * Max_Patch * 3 / 4) + Max_Patch / 4+ 1;L = (int) (Math.random() * Max_Length * 3 / 4) + Max_Length / 4+ 1;S = (long) (Math.random() * 10000);}for (i = 0; i Max_Number; i++) {if (bcd[i].sleep Math.random() * Max_Number * L 1) {bcd[i].init(E, P, L, S);bcd[i].start();}bcd[i].show(g);}}}public void paint(Graphics g) {                   g.setColor(Color.black);                   g.fillRect(0, 0, width + 1, height + 1);       }}class BeaClassDemo {public boolean sleep = true;private int energy, patch, length, width, height, G, Xx, Xy, Ex[], Ey[], x,y, Red, Blue, Green, t;private Random random;                       public BeaClassDemo(int a, int b, int g) {           width = a;height = b;G = g;}public void init(int e, int p, int l, long seed) {int i;energy = e;patch = p;length = l;// 创建一个带种子的随机数生成器random = new Random(seed);Ex = new int[patch];                       Ey = new int[patch];                   Red = (int) (random.nextDouble() * 128) + 128;Blue = (int) (random.nextDouble() * 128) + 128;Green = (int) (random.nextDouble() * 128) + 128;Xx = (int) (Math.random() * width / 2) + width / 4;Xy = (int) (Math.random() * height / 2) + height / 4;for (i = 0; i patch; i++) {Ex[i] = (int) (Math.random() * energy) - energy / 2;Ey[i] = (int) (Math.random() * energy * 7 / 8) - energy / 8;

回答于 2023-02-22

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