java简单的代码特效,java简单好玩的代码

给段最简单的java代码 让我新手看一下

最简单的java代码肯定就是这个了,如下:

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public class MyFirstApp

{

public static void main(String[] args)

{

System.out.print("Hello world");

}

}

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页面特效:下星星的代码(JAVA代码)

以下的代码就可以,lz自己在*的地方填入星星的图片就可以了

body bgcolor=#ee3300

style

.drop { position: absolute; width: 3; filter: flipV(), flipH(); font-size: 40; color: #ffffff }

/style

script language="javascript"

snow = false; // false-rain; true-snow

snowsym = " * " are the symbols for each

rainsym = " * " can put images here.

howmany = 20 many drops/snowflakes?

/**************Do not need to change anything below***********/

if(snow){sym = snowsym; speed=1; angle=10; drops=howmany}

else{sym = rainsym; speed=30; drops=howmany; angle=6}

movex = -speed/angle; movey = speed; count = 0;

function moverain(){

for(move = 0; move drops; move++){

xx[move]+=movex; yy[move]+=mv[move];

hmm = Math.round(Math.random()*1);

if(xx[move] 0){xx[move] = maxx+10;}

if(yy[move] maxy){yy[move] = 10;}

drop[move].left = xx[move]

drop[move].top = yy[move]+document.body.scrollTop;

}setTimeout('moverain()','1')}

/script

script language="javascript"

if (document.all){

drop = new Array(); xx = new Array(); yy = new Array(); mv = new Array()

ly = "document.all[\'"; st = "\'].style"

for(make = 0; make drops; make++){

document.write('div id="drop'+make+'" class=drop'+sym+'/div');

drop[make] = eval(ly+'drop'+make+st);

maxx = document.body.clientWidth-40

maxy = document.body.clientHeight-40

xx[make] = Math.random()*maxx;

yy[make] = -100-Math.random()*maxy;

drop[make].left = xx[make]

drop[make].top = yy[make]

mv[make] = (Math.random()*5)+speed/16;

drop[make].fontSize = (Math.random()*10)+20;

if(snow){col = 'white'}else{col = 'white'}

drop[make].color = col;

}

window.onload=moverain

}

/script

/body

求一个简单的java代码:(图形界面)

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Toolkit;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JDialog;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPasswordField;

import javax.swing.JTextField;

public class vv extends JDialog {

private static final long serialVersionUID = 1L;

private JLabel l_Id = new JLabel("登陆账户", JLabel.CENTER);

private JLabel l_pw = new JLabel("登陆密码", JLabel.CENTER);

private JTextField t_Id = new JTextField(10);

private JPasswordField t_pw = new JPasswordField(10);

private JButton btnLogin;

private JButton btnClose;

public vv() {

super();

setResizable(false);

getContentPane().setBackground(new Color(225, 225, 225));

getContentPane().setLayout(null);

initialize();

}

protected void initialize() {

setTitle("系统登录");

l_Id.setBounds(48, 43, 53, 25);

t_Id.setBounds(110, 43, 150, 25);

l_pw.setBounds(48, 93, 53, 25);

t_pw.setBounds(110, 93, 150, 25);

getContentPane().add(l_Id);

getContentPane().add(l_pw);

getContentPane().add(t_Id);

getContentPane().add(t_pw);

btnLogin = new JButton();

btnLogin.setText("登 录");

btnLogin.setBounds(70, 142, 85, 28);

btnLogin.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

addBtnLoginActionListener();

}

});

getContentPane().add(btnLogin);

btnClose = new JButton();

btnClose.setText("关 闭");

btnClose.setBounds(175, 142, 85, 28);

btnClose.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

dispose();

System.exit(-1);

}

});

getContentPane().add(btnClose);

}

private void addBtnLoginActionListener() {

String user = t_Id.getText();

String password = new String(t_pw.getPassword());

if (user.equals("")) {

JOptionPane.showMessageDialog(this, "帐号不可为空", "Caution",

JOptionPane.WARNING_MESSAGE);

return;

}

if (password.equals("")) {

JOptionPane.showMessageDialog(this, "密码不可为空", "Caution",

JOptionPane.WARNING_MESSAGE);

return;

}

String sql = "select * FROM login WHERE id = '" + user + "' and pw = '"

+ password + "'";

boolean success = false;

// TODO:数据校验 success = executeQuery(sql);

if (success) {

// TODO: 如果数据校验成功 显示主界面 并关闭登录界面

JOptionPane.showMessageDialog(this, "成功登录", "提示",

JOptionPane.INFORMATION_MESSAGE);

this.dispose();

} else {

JOptionPane.showMessageDialog(this, "帐号或密码错误!", "警告",

JOptionPane.WARNING_MESSAGE);

t_pw.requestFocus(); // 密码框选中

}

}

public Dimension getPreferredSize() {

return new Dimension(320, 170);

}

public void show() {

Toolkit tk = Toolkit.getDefaultToolkit();

Dimension screen = tk.getScreenSize();

Dimension d = getSize();

this.setLocation((screen.width - d.width) / 2,

(screen.height - d.height) / 2);

// 输入密码后回车相当于点击了登录按钮

getRootPane().setDefaultButton(btnLogin);

t_pw.requestFocus();

setDefaultCloseOperation(DISPOSE_ON_CLOSE);

setSize(300, 220);

super.show();

}

public static void main(String[] args) {

vv loginFrame = new vv();

loginFrame.setVisible(true);

}

}

希望对你有帮助

怎么使用java代码实现模拟水位涨沉动态效果

这是js...

dom的话设置div的top和bottom属性,用setTimeout()或者setInterval()方法

jquery的话就简单了,直接用animate()方法,也是设置top和bottom属性,slideUp()和slideDown()方法也行。

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)

Android如何纯java代码实现字体阴影效果

Android实现纯java代码字体阴影效果,主要是通过activity的draw方法,进行重新绘制,如下代码:

package canvas.test;

import android.app.Activity;

import android.os.Bundle;

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.graphics.PorterDuff;

import android.graphics.PorterDuff.Mode;

import android.graphics.PorterDuffXfermode;

import android.graphics.Rect;

import android.graphics.RectF;

import android.graphics.drawable.Drawable;

import android.view.View;

public class ShaderEffect extends Activity {

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(new ImageEffect(this));

}

class ImageEffect extends View{

Paint paint; 

public ImageEffect (Context context){

super(context);

paint = new Paint();//初始化画笔,为后面阴影效果使用。

paint.setAntiAlias(true);//去除锯齿。

paint.setShadowLayer(5f, 5.0f, 5.0f, Color.BLACK);//设置阴影层,这是关键。

paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));

}

@Override

public void onDraw(Canvas canvas){

super.onDraw(canvas);

int posX = 20;

int posY = 50;

int PicWidth,PicHegiht; 

Drawable drawable = getResources().getDrawable(R.drawable.button);

Drawable dbe = getResources().getDrawable(R.drawable.button).mutate();//如果不调用mutate方法,则原图也会被改变,因为调用的资源是同一个,所有对象是共享状态的。

Drawable drawTest = getResources().getDrawable(R.drawable.button);

Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.button);

PicWidth = drawable.getIntrinsicWidth();

PicHegiht = drawable.getIntrinsicHeight();

drawTest.setBounds(posX, (2 * posY) + PicHegiht, posX + PicWidth, (2 * posY) + 2 * PicHegiht );

drawable.setBounds(posX,posY,posX+PicWidth,posY+PicHegiht);

dbe.setBounds(0, 0, PicWidth, PicHegiht);

canvas.drawColor(Color.WHITE);//设置画布颜色

canvas.save(Canvas.MATRIX_SAVE_FLAG);

dbe.setColorFilter(0x7f000000,PorterDuff.Mode.SRC_IN);

canvas.translate(posX + (int)(0.9 * PicWidth/2), posY + PicHegiht/2);//图像平移为了刚好在原图后形成影子效果。

canvas.skew(-0.9F, 0.0F);//图像倾斜效果。

canvas.scale(1.0f, 0.5f);//图像(其实是画布)缩放,Y方向缩小为1/2。

dbe.draw(canvas);//此处为画原图像影子效果图,比原图先画,则会在下层。

drawable.clearColorFilter();

canvas.restore();

canvas.save(Canvas.MATRIX_SAVE_FLAG);

drawable.draw(canvas);//此处为画原图像,由于canvas有层次效果,因此会盖在影子之上。

canvas.restore();

//默认无效果原图

canvas.save(Canvas.MATRIX_SAVE_FLAG);

drawTest.draw(canvas);

canvas.restore();

//图片阴影效果

canvas.save(Canvas.MATRIX_SAVE_FLAG);

//Rect rect = new Rect(2*posX + PicWidth, 2*posY + PicHegiht, 2*posX + 2*PicWidth, 2*posY + 2*PicHegiht);//此为理论上的阴影图坐标

Rect rect = new Rect(2*posX + PicWidth + 3, 2*posY + PicHegiht + 3, 2*posX + 2*PicWidth - 2, 2*posY + 2*PicHegiht - 2);

//由于图片的实际尺寸比显示出来的图像要大一些,因此需要适当更改下大小,以达到较好的效果

RectF rectF = new RectF(rect);

canvas.drawRoundRect(rectF, 10f, 10f, paint);//在原有矩形基础上,画成圆角矩形,同时带有阴影层。

canvas.drawBitmap(bmp, 2*posX + PicWidth, 2*posY + PicHegiht, null);//画上原图。

canvas.restore();

}

}

}


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