
{"id":3596,"date":"2010-02-26T11:23:36","date_gmt":"2010-02-26T14:23:36","guid":{"rendered":"https:\/\/eliezerladeira.com.br\/blog\/?p=3596"},"modified":"2026-02-09T11:56:04","modified_gmt":"2026-02-09T14:56:04","slug":"como-criar-animacoes-paint-e-thread","status":"publish","type":"post","link":"https:\/\/eliezerladeira.com.br\/blog\/como-criar-animacoes-paint-e-thread\/","title":{"rendered":"Como criar anima\u00e7\u00f5es: Paint e\u00a0Thread"},"content":{"rendered":"<div id=\"post-624\" class=\"post-624 post type-post status-publish format-standard hentry\">\n<div class=\"entry\">\n<p><a href=\"https:\/\/netsysoft.wordpress.com\/wp-content\/uploads\/2010\/02\/animate.png\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-625 lazyload\" title=\"Animate\" data-src=\"https:\/\/netsysoft.wordpress.com\/wp-content\/uploads\/2010\/02\/animate.png?w=468\" data-sizes=\"(max-width: 200px) 100vw, 200px\" data-srcset=\"https:\/\/netsysoft.wordpress.com\/wp-content\/uploads\/2010\/02\/animate.png 200w, https:\/\/netsysoft.wordpress.com\/wp-content\/uploads\/2010\/02\/animate.png?w=150&amp;h=150 150w\" alt=\"\" data-attachment-id=\"625\" data-permalink=\"https:\/\/netsysoft.wordpress.com\/2010\/02\/26\/como-criar-animacoes-paint-e-thread\/animate\/\" data-orig-file=\"https:\/\/netsysoft.wordpress.com\/wp-content\/uploads\/2010\/02\/animate.png\" data-orig-size=\"200,200\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Animate\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/netsysoft.wordpress.com\/wp-content\/uploads\/2010\/02\/animate.png?w=200\" data-large-file=\"https:\/\/netsysoft.wordpress.com\/wp-content\/uploads\/2010\/02\/animate.png?w=200\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\"><\/a><\/p>\n<p><code><strong>import&nbsp;<\/strong><\/code><code>java.awt.Color;<\/code><br \/>\n<code><strong>import&nbsp;<\/strong>java.awt.Graphics;<\/code><br \/>\n<code><strong>import&nbsp;<\/strong>java.awt.Insets;<\/code><br \/>\n<code><strong>import&nbsp;<\/strong>java.util.Timer;<\/code><br \/>\n<code><strong>import&nbsp;<\/strong>java.util.TimerTask;<\/code><\/p>\n<p><code><strong>import&nbsp;<\/strong>javax.swing.JFrame;<\/code><\/p>\n<p><code><strong>public&nbsp;class&nbsp;<\/strong>Animate&nbsp;<strong>extends&nbsp;<\/strong>JFrame&nbsp;{<\/code><\/p>\n<p><code><strong>private&nbsp;static&nbsp;int&nbsp;<\/strong>DELAY&nbsp;=&nbsp;100;<\/code><\/p>\n<p><code>Insets&nbsp;insets;<\/code><\/p>\n<p><code>Color&nbsp;colors[]&nbsp;=&nbsp;{&nbsp;Color.RED,&nbsp;Color.ORANGE,&nbsp;Color.YELLOW,&nbsp;Color.GREEN,<\/code><br \/>\n<code>Color.BLUE,&nbsp;Color.MAGENTA&nbsp;};<\/code><\/p>\n<p><code><strong>public&nbsp;void&nbsp;<\/strong>paint(Graphics&nbsp;g)&nbsp;{<\/code><br \/>\n<code><strong>super<\/strong>.paint(g);<\/code><br \/>\n<code><strong>if&nbsp;<\/strong>(insets&nbsp;==&nbsp;<strong>null<\/strong>)&nbsp;{<\/code><br \/>\n<code>insets&nbsp;=&nbsp;getInsets();<\/code><br \/>\n<code>}<\/code><br \/>\n<code>\/\/&nbsp;Calculate&nbsp;each&nbsp;time&nbsp;in&nbsp;case&nbsp;of&nbsp;resize<\/code><br \/>\n<code><strong>int&nbsp;<\/strong>x&nbsp;=&nbsp;insets.left;<\/code><br \/>\n<code><strong>int&nbsp;<\/strong>y&nbsp;=&nbsp;insets.top;<\/code><br \/>\n<code><strong>int&nbsp;<\/strong>width&nbsp;=&nbsp;getWidth()&nbsp;-&nbsp;insets.left&nbsp;-&nbsp;insets.right;<\/code><br \/>\n<code><strong>int&nbsp;<\/strong>height&nbsp;=&nbsp;getHeight()&nbsp;-&nbsp;insets.top&nbsp;-&nbsp;insets.bottom;<\/code><br \/>\n<code><strong>int&nbsp;<\/strong>start&nbsp;=&nbsp;0;<\/code><br \/>\n<code><strong>int&nbsp;<\/strong>steps&nbsp;=&nbsp;colors.length;<\/code><br \/>\n<code><strong>int&nbsp;<\/strong>stepSize&nbsp;=&nbsp;360&nbsp;\/&nbsp;steps;<\/code><br \/>\n<code><strong>synchronized&nbsp;<\/strong>(colors)&nbsp;{<\/code><br \/>\n<code><strong>for&nbsp;<\/strong>(<strong>int&nbsp;<\/strong>i&nbsp;=&nbsp;0;&nbsp;i&nbsp;&lt;&nbsp;steps;&nbsp;i++)&nbsp;{<\/code><br \/>\n<code>g.setColor(colors[i]);<\/code><br \/>\n<code>g.fillArc(x,&nbsp;y,&nbsp;width,&nbsp;height,&nbsp;start,&nbsp;stepSize);<\/code><br \/>\n<code>start&nbsp;+=&nbsp;stepSize;<\/code><br \/>\n<code>}<\/code><br \/>\n<code>}<\/code><br \/>\n<code>}<\/code><\/p>\n<p><code><strong>public&nbsp;void&nbsp;<\/strong>go()&nbsp;{<\/code><br \/>\n<code>TimerTask&nbsp;task&nbsp;=&nbsp;<strong>new&nbsp;<\/strong>TimerTask()&nbsp;{<\/code><br \/>\n<code><strong>public&nbsp;void&nbsp;<\/strong>run()&nbsp;{<\/code><br \/>\n<code>Color&nbsp;c&nbsp;=&nbsp;colors[0];<\/code><br \/>\n<code><strong>synchronized&nbsp;<\/strong>(colors)&nbsp;{<\/code><br \/>\n<code>System.arraycopy(colors,&nbsp;1,&nbsp;colors,&nbsp;0,&nbsp;colors.length&nbsp;-&nbsp;1);<\/code><br \/>\n<code>colors[colors.length&nbsp;-&nbsp;1]&nbsp;=&nbsp;c;<\/code><br \/>\n<code>}<\/code><br \/>\n<code>repaint();<\/code><br \/>\n<code>}<\/code><br \/>\n<code>};<\/code><br \/>\n<code>Timer&nbsp;timer&nbsp;=&nbsp;<strong>new&nbsp;<\/strong>Timer();<\/code><br \/>\n<code>timer.schedule(task,&nbsp;0,&nbsp;DELAY);<\/code><br \/>\n<code>}<\/code><\/p>\n<p><code><strong>public&nbsp;static&nbsp;void&nbsp;<\/strong>main(String&nbsp;args[])&nbsp;{<\/code><br \/>\n<code>Animate&nbsp;f&nbsp;=&nbsp;<strong>new&nbsp;<\/strong>Animate();<\/code><br \/>\n<code>f.setSize(200,&nbsp;200);<\/code><br \/>\n<code>f.show();<\/code><br \/>\n<code>f.go();<\/code><br \/>\n<code>}<\/code><br \/>\n<code>}<\/code><\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>import&nbsp;java.awt.Color; import&nbsp;java.awt.Graphics; import&nbsp;java.awt.Insets; import&nbsp;java.util.Timer; import&nbsp;java.util.TimerTask; import&nbsp;javax.swing.JFrame; public&nbsp;class&nbsp;Animate&nbsp;extends&nbsp;JFrame&nbsp;{ private&nbsp;static&nbsp;int&nbsp;DELAY&nbsp;=&nbsp;100; Insets&nbsp;insets; Color&nbsp;colors[]&nbsp;=&nbsp;{&nbsp;Color.RED,&nbsp;Color.ORANGE,&nbsp;Color.YELLOW,&nbsp;Color.GREEN, Color.BLUE,&nbsp;Color.MAGENTA&nbsp;}; public&nbsp;void&nbsp;paint(Graphics&nbsp;g)&nbsp;{ super.paint(g); if&nbsp;(insets&nbsp;==&nbsp;null)&nbsp;{ insets&nbsp;=&nbsp;getInsets(); } \/\/&nbsp;Calculate&nbsp;each&nbsp;time&nbsp;in&nbsp;case&nbsp;of&nbsp;resize int&nbsp;x&nbsp;=&nbsp;insets.left; int&nbsp;y&nbsp;=&nbsp;insets.top; int&nbsp;width&nbsp;=&nbsp;getWidth()&nbsp;&#8211;&nbsp;insets.left&nbsp;&#8211;&nbsp;insets.right;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"Como criar anima\u00e7\u00f5es: Paint e\u00a0Thread","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3508,1079],"tags":[249,942,51],"class_list":["post-3596","post","type-post","status-publish","format-standard","hentry","category-programacao","category-tecnologia","tag-informatica","tag-java","tag-programacao"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":3600,"url":"https:\/\/eliezerladeira.com.br\/blog\/como-criar-animacoes\/","url_meta":{"origin":3596,"position":0},"title":"Como criar anima\u00e7\u00f5es","author":"admin","date":"","format":false,"excerpt":"import\u00a0java.applet.Applet; import\u00a0java.awt.Graphics; import\u00a0java.awt.event.MouseAdapter; import\u00a0java.awt.event.MouseEvent; public\u00a0class\u00a0AppletAnimation\u00a0extends\u00a0Applet\u00a0implements\u00a0Runnable\u00a0{ int\u00a0frameNumber\u00a0=\u00a0-1; int\u00a0delay\u00a0=\u00a0100; Thread\u00a0animatorThread; boolean\u00a0frozen\u00a0=\u00a0false; public\u00a0void\u00a0init()\u00a0{ String\u00a0str; addMouseListener(new\u00a0MouseAdapter()\u00a0{ public\u00a0void\u00a0mousePressed(MouseEvent\u00a0e)\u00a0{ if\u00a0(frozen)\u00a0{ frozen\u00a0=\u00a0false; start(); }\u00a0else\u00a0{ frozen\u00a0=\u00a0true; stop(); } } }); } public\u00a0void\u00a0start()\u00a0{ if\u00a0(!frozen)\u00a0{ if\u00a0(animatorThread\u00a0==\u00a0null)\u00a0{ animatorThread\u00a0=\u00a0new\u00a0Thread(this); } animatorThread.start(); } } public\u00a0void\u00a0stop()\u00a0{ animatorThread\u00a0=\u00a0null; } public\u00a0void\u00a0run()\u00a0{ Thread.currentThread().setPriority(Thread.MIN_PRIORITY); long\u00a0startTime\u00a0=\u00a0System.currentTimeMillis(); Thread\u00a0currentThread\u00a0=\u00a0Thread.currentThread(); while\u00a0(currentThread\u00a0==\u00a0animatorThread)\u00a0{ frameNumber++; repaint(); try\u00a0{ startTime\u00a0+=\u00a0delay; Thread.sleep(100); }\u00a0catch\u00a0(InterruptedException\u00a0e)\u00a0{ break; } } } public\u00a0void\u00a0paint(Graphics\u00a0g)\u00a0{\u2026","rel":"","context":"Em &quot;Programa\u00e7\u00e3o&quot;","block_context":{"text":"Programa\u00e7\u00e3o","link":"https:\/\/eliezerladeira.com.br\/blog\/category\/tecnologia\/programacao\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3587,"url":"https:\/\/eliezerladeira.com.br\/blog\/hypnosis-animation\/","url_meta":{"origin":3596,"position":1},"title":"Hypnosis animation","author":"admin","date":"","format":false,"excerpt":"import\u00a0java.awt.Color; import\u00a0java.awt.Dimension; import\u00a0java.awt.GradientPaint; import\u00a0java.awt.Graphics; import\u00a0java.awt.Graphics2D; import\u00a0java.awt.Paint; import\u00a0java.awt.RenderingHints; import\u00a0java.awt.Shape; import\u00a0java.awt.geom.GeneralPath; import\u00a0javax.swing.JComponent; import\u00a0javax.swing.JFrame; public\u00a0class\u00a0Hypnosis1\u00a0extends\u00a0JComponent\u00a0implements\u00a0Runnable\u00a0{ private\u00a0int[]\u00a0coordinates; private\u00a0int[]\u00a0deltas; private\u00a0Paint\u00a0paint; public\u00a0Hypnosis1(int\u00a0numberOfSegments)\u00a0{ int\u00a0numberOfCoordinates\u00a0=\u00a0numberOfSegments\u00a0*\u00a04\u00a0+\u00a02; coordinates\u00a0=\u00a0new\u00a0int[numberOfCoordinates]; deltas\u00a0=\u00a0new\u00a0int[numberOfCoordinates]; for\u00a0(int\u00a0i\u00a0=\u00a00;\u00a0i\u00a0<\u00a0numberOfCoordinates;\u00a0i++)\u00a0{ coordinates[i]\u00a0=\u00a0(int)\u00a0(Math.random()\u00a0*\u00a0300); deltas[i]\u00a0=\u00a0(int)\u00a0(Math.random()\u00a0*\u00a04\u00a0+\u00a03); if\u00a0(deltas[i]\u00a0>\u00a04) deltas[i]\u00a0=\u00a0-(deltas[i]\u00a0-\u00a03); } paint\u00a0=\u00a0new\u00a0GradientPaint(0,\u00a00,\u00a0Color.blue,\u00a020,\u00a010,\u00a0Color.red,\u00a0true); Thread\u00a0t\u00a0=\u00a0new\u00a0Thread(this); t.start(); } public\u00a0void\u00a0run()\u00a0{ try\u00a0{ while\u00a0(true)\u00a0{ timeStep(); repaint(); Thread.sleep(1000\u00a0\/\u00a024); } }\u00a0catch\u00a0(InterruptedException\u00a0ie)\u00a0{ } } public\u00a0void\u00a0paint(Graphics\u00a0g)\u00a0{ Graphics2D\u00a0g2\u00a0=\u00a0(Graphics2D)\u00a0g; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,\u00a0RenderingHints.VALUE_ANTIALIAS_ON); Shape\u00a0s\u00a0=\u00a0createShape(); g2.setPaint(paint); g2.fill(s); g2.setPaint(Color.white); g2.draw(s); } private\u00a0void\u00a0timeStep()\u00a0{ Dimension\u00a0d\u00a0=\u00a0getSize();\u2026","rel":"","context":"Em &quot;Programa\u00e7\u00e3o&quot;","block_context":{"text":"Programa\u00e7\u00e3o","link":"https:\/\/eliezerladeira.com.br\/blog\/category\/tecnologia\/programacao\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3592,"url":"https:\/\/eliezerladeira.com.br\/blog\/noise-image\/","url_meta":{"origin":3596,"position":2},"title":"Noise Image","author":"admin","date":"","format":false,"excerpt":"import\u00a0java.awt.Graphics; import\u00a0java.awt.event.WindowAdapter; import\u00a0java.awt.event.WindowEvent; import\u00a0java.awt.image.BufferedImage; import\u00a0java.awt.image.ColorModel; import\u00a0java.awt.image.DataBuffer; import\u00a0java.awt.image.DataBufferByte; import\u00a0java.awt.image.IndexColorModel; import\u00a0java.awt.image.Raster; import\u00a0java.awt.image.WritableRaster; import\u00a0java.util.Random; import\u00a0javax.swing.JComponent; import\u00a0javax.swing.JFrame; public\u00a0class\u00a0StaticGenerator\u00a0extends\u00a0JComponent\u00a0implements\u00a0Runnable\u00a0{ byte[]\u00a0data; BufferedImage\u00a0image; Random\u00a0random; public\u00a0void\u00a0initialize()\u00a0{ int\u00a0w\u00a0=\u00a0getSize().width,\u00a0h\u00a0=\u00a0getSize().height; int\u00a0length\u00a0=\u00a0((w\u00a0+\u00a07)\u00a0*\u00a0h)\u00a0\/\u00a08; data\u00a0=\u00a0new\u00a0byte[length]; DataBuffer\u00a0db\u00a0=\u00a0new\u00a0DataBufferByte(data,\u00a0length); WritableRaster\u00a0wr\u00a0=\u00a0Raster.createPackedRaster(db,\u00a0w,\u00a0h,\u00a01,\u00a0null); ColorModel\u00a0cm\u00a0=\u00a0new\u00a0IndexColorModel(1,\u00a02,\u00a0new\u00a0byte[]\u00a0{\u00a0(byte)\u00a00,\u00a0(byte)\u00a0255\u00a0},\u00a0new\u00a0byte[]\u00a0{ (byte)\u00a00,\u00a0(byte)\u00a0255\u00a0},\u00a0new\u00a0byte[]\u00a0{\u00a0(byte)\u00a00,\u00a0(byte)\u00a0255\u00a0}); image\u00a0=\u00a0new\u00a0BufferedImage(cm,\u00a0wr,\u00a0false,\u00a0null); random\u00a0=\u00a0new\u00a0Random(); new\u00a0Thread(this).start(); } public\u00a0void\u00a0run()\u00a0{ while\u00a0(true)\u00a0{ random.nextBytes(data); repaint(); try\u00a0{ Thread.sleep(1000\u00a0\/\u00a024); }\u00a0catch\u00a0(InterruptedException\u00a0e)\u00a0{\u00a0\/*\u00a0die\u00a0*\/ } } } public\u00a0void\u00a0paint(Graphics\u00a0g)\u00a0{ if\u00a0(image\u00a0==\u00a0null) initialize(); g.drawImage(image,\u00a00,\u00a00,\u00a0this); } public\u00a0static\u00a0void\u00a0main(String[]\u00a0args)\u00a0{ JFrame\u00a0f\u00a0=\u00a0new\u00a0JFrame(); f.add(new\u00a0StaticGenerator()); f.setSize(300,\u00a0300); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setVisible(true);\u2026","rel":"","context":"Em &quot;Programa\u00e7\u00e3o&quot;","block_context":{"text":"Programa\u00e7\u00e3o","link":"https:\/\/eliezerladeira.com.br\/blog\/category\/tecnologia\/programacao\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/netsysoft.wordpress.com\/wp-content\/uploads\/2010\/02\/staticgenerator.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":3585,"url":"https:\/\/eliezerladeira.com.br\/blog\/font-size-animation\/","url_meta":{"origin":3596,"position":3},"title":"Font size animation","author":"admin","date":"","format":false,"excerpt":"import\u00a0java.awt.Font; import\u00a0java.awt.FontMetrics; import\u00a0java.awt.Graphics; import\u00a0java.awt.Graphics2D; import\u00a0java.awt.event.ActionEvent; import\u00a0java.awt.event.ActionListener; import\u00a0javax.swing.JFrame; import\u00a0javax.swing.JPanel; import\u00a0javax.swing.Timer; public\u00a0class\u00a0FontSizeAnimation\u00a0extends\u00a0JPanel\u00a0implements\u00a0ActionListener\u00a0{ Timer\u00a0timer; int\u00a0x\u00a0=\u00a01; float\u00a0alpha\u00a0=\u00a01; public\u00a0FontSizeAnimation()\u00a0{ timer\u00a0=\u00a0new\u00a0Timer(8,\u00a0this); timer.setInitialDelay(190); timer.start(); } public\u00a0void\u00a0paint(Graphics\u00a0g)\u00a0{ super.paintComponent(g); Graphics2D\u00a0g2d\u00a0=\u00a0(Graphics2D)\u00a0g; Font\u00a0font\u00a0=\u00a0new\u00a0Font(\"Dialog\",\u00a0Font.PLAIN,\u00a0x); g2d.setFont(font); FontMetrics\u00a0fm\u00a0=\u00a0g2d.getFontMetrics(); String\u00a0s\u00a0=\u00a0\"Java\"; int\u00a0w\u00a0=\u00a0(int)\u00a0getSize().getWidth(); int\u00a0h\u00a0=\u00a0(int)\u00a0getSize().getHeight(); int\u00a0stringWidth\u00a0=\u00a0fm.stringWidth(s); g2d.drawString(s,\u00a0(w\u00a0-\u00a0stringWidth)\u00a0\/\u00a02,\u00a0h\u00a0\/\u00a02); } public\u00a0static\u00a0void\u00a0main(String[]\u00a0args)\u00a0{ JFrame\u00a0frame\u00a0=\u00a0new\u00a0JFrame(\"FontSizeAnimation\"); frame.add(new\u00a0FontSizeAnimation()); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(400,\u00a0300); frame.setLocationRelativeTo(null); frame.setVisible(true); } public\u00a0void\u00a0actionPerformed(ActionEvent\u00a0e)\u00a0{ x\u00a0+=\u00a01; alpha\u00a0-=\u00a00.0001; repaint(); } } \u00a0","rel":"","context":"Em &quot;Programa\u00e7\u00e3o&quot;","block_context":{"text":"Programa\u00e7\u00e3o","link":"https:\/\/eliezerladeira.com.br\/blog\/category\/tecnologia\/programacao\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3606,"url":"https:\/\/eliezerladeira.com.br\/blog\/bounce-thread\/","url_meta":{"origin":3596,"position":4},"title":"Bounce Thread","author":"admin","date":"","format":false,"excerpt":"\/** *\u00a0@version\u00a01.20\u00a01999-04-25 *\u00a0@author\u00a0Cay\u00a0Horstmann *\/ import\u00a0java.awt.Container; import\u00a0java.awt.Dimension; import\u00a0java.awt.Graphics; import\u00a0java.awt.event.ActionEvent; import\u00a0java.awt.event.ActionListener; import\u00a0java.awt.event.WindowAdapter; import\u00a0java.awt.event.WindowEvent; import\u00a0javax.swing.JButton; import\u00a0javax.swing.JFrame; import\u00a0javax.swing.JPanel; public\u00a0class\u00a0BounceThread\u00a0{ public\u00a0static\u00a0void\u00a0main(String[]\u00a0args)\u00a0{ JFrame\u00a0frame\u00a0=\u00a0new\u00a0BounceThreadFrame(); frame.show(); } } class\u00a0BounceThreadFrame\u00a0extends\u00a0JFrame\u00a0{ public\u00a0BounceThreadFrame()\u00a0{ setSize(300,\u00a0200); setTitle(\"Bounce\"); addWindowListener(new\u00a0WindowAdapter()\u00a0{ public\u00a0void\u00a0windowClosing(WindowEvent\u00a0e)\u00a0{ System.exit(0); } }); Container\u00a0contentPane\u00a0=\u00a0getContentPane(); canvas\u00a0=\u00a0new\u00a0JPanel(); contentPane.add(canvas,\u00a0\"Center\"); JPanel\u00a0p\u00a0=\u00a0new\u00a0JPanel(); addButton(p,\u00a0\"Start\",\u00a0new\u00a0ActionListener()\u00a0{ public\u00a0void\u00a0actionPerformed(ActionEvent\u00a0evt)\u00a0{ Ball\u00a0b\u00a0=\u00a0new\u00a0Ball(canvas); b.start(); } }); addButton(p,\u00a0\"Close\",\u00a0new\u00a0ActionListener()\u00a0{ public\u00a0void\u00a0actionPerformed(ActionEvent\u00a0evt)\u00a0{ canvas.setVisible(false); System.exit(0); } }); contentPane.add(p,\u00a0\"South\"); } public\u00a0void\u00a0addButton(Container\u00a0c,\u00a0String\u00a0title,\u00a0ActionListener\u00a0a)\u00a0{ JButton\u00a0b\u00a0=\u00a0new\u00a0JButton(title); c.add(b);\u2026","rel":"","context":"Em &quot;Programa\u00e7\u00e3o&quot;","block_context":{"text":"Programa\u00e7\u00e3o","link":"https:\/\/eliezerladeira.com.br\/blog\/category\/tecnologia\/programacao\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3583,"url":"https:\/\/eliezerladeira.com.br\/blog\/fade-out-de-uma-imagem-a-imagem-vai-ficando-transparente-gradualmente-ate-que-esteja-completamente-invisivel\/","url_meta":{"origin":3596,"position":5},"title":"Fade out de uma imagem: a imagem vai ficando transparente gradualmente at\u00e9 que esteja completamente\u00a0invis\u00edvel","author":"admin","date":"","format":false,"excerpt":"import\u00a0java.awt.AlphaComposite; import\u00a0java.awt.Graphics; import\u00a0java.awt.Graphics2D; import\u00a0java.awt.Image; import\u00a0java.awt.event.ActionEvent; import\u00a0java.awt.event.ActionListener; import\u00a0javax.swing.ImageIcon; import\u00a0javax.swing.JFrame; import\u00a0javax.swing.JPanel; import\u00a0javax.swing.Timer; public\u00a0class\u00a0FadeOutImage\u00a0extends\u00a0JPanel\u00a0implements\u00a0ActionListener\u00a0{ Image\u00a0myImage\u00a0=\u00a0new\u00a0ImageIcon(\"a.jpg\").getImage(); Timer\u00a0timer\u00a0=\u00a0new\u00a0Timer(20,\u00a0this); private\u00a0float\u00a0alpha\u00a0=\u00a01f; public\u00a0FadeOutImage()\u00a0{ timer.start(); } public\u00a0void\u00a0paint(Graphics\u00a0g)\u00a0{ super.paint(g); Graphics2D\u00a0g2d\u00a0=\u00a0(Graphics2D)\u00a0g; g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,\u00a0alpha)); 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