{"id":3587,"date":"2010-02-17T10:54:47","date_gmt":"2010-02-17T12:54:47","guid":{"rendered":"https:\/\/eliezerladeira.com.br\/blog\/?p=3587"},"modified":"2026-02-09T11:56:04","modified_gmt":"2026-02-09T14:56:04","slug":"hypnosis-animation","status":"publish","type":"post","link":"https:\/\/eliezerladeira.com.br\/blog\/hypnosis-animation\/","title":{"rendered":"Hypnosis animation"},"content":{"rendered":"
\n

import <\/strong><\/code>java.awt.Color;<\/code>
\nimport <\/strong>java.awt.Dimension;<\/code>
\nimport <\/strong>java.awt.GradientPaint;<\/code>
\nimport <\/strong>java.awt.Graphics;<\/code>
\nimport <\/strong>java.awt.Graphics2D;<\/code>
\nimport <\/strong>java.awt.Paint;<\/code>
\nimport <\/strong>java.awt.RenderingHints;<\/code>
\nimport <\/strong>java.awt.Shape;<\/code>
\nimport <\/strong>java.awt.geom.GeneralPath;<\/code><\/p>\n

import <\/strong>javax.swing.JComponent;<\/code>
\nimport <\/strong>javax.swing.JFrame;<\/code><\/p>\n

public class <\/strong>Hypnosis1 extends <\/strong>JComponent implements <\/strong>Runnable {<\/code>
\nprivate int<\/strong>[] coordinates;<\/code><\/p>\n

private int<\/strong>[] deltas;<\/code><\/p>\n

private <\/strong>Paint paint;<\/code><\/p>\n

public <\/strong>Hypnosis1(int <\/strong>numberOfSegments) {<\/code>
\nint <\/strong>numberOfCoordinates = numberOfSegments * 4 + 2;<\/code>
\ncoordinates = new int<\/strong>[numberOfCoordinates];<\/code>
\ndeltas = new int<\/strong>[numberOfCoordinates];<\/code>
\nfor <\/strong>(int <\/strong>i = 0; i < numberOfCoordinates; i++) {<\/code>
\ncoordinates[i] = (int<\/strong>) (Math.random() * 300);<\/code>
\ndeltas[i] = (int<\/strong>) (Math.random() * 4 + 3);<\/code>
\nif <\/strong>(deltas[i] > 4)<\/code>
\ndeltas[i] = -(deltas[i] - 3);<\/code>
\n}<\/code>
\npaint = new <\/strong>GradientPaint(0, 0, Color.blue, 20, 10, Color.red, true<\/strong>);<\/code><\/p>\n

Thread t = new <\/strong>Thread(this<\/strong>);<\/code>
\nt.start();<\/code>
\n}<\/code><\/p>\n

public void <\/strong>run() {<\/code>
\ntry <\/strong>{<\/code>
\nwhile <\/strong>(true<\/strong>) {<\/code>
\ntimeStep();<\/code>
\nrepaint();<\/code>
\nThread.sleep(1000 \/ 24);<\/code>
\n}<\/code>
\n} catch <\/strong>(InterruptedException ie) {<\/code>
\n}<\/code>
\n}<\/code><\/p>\n

public void <\/strong>paint(Graphics g) {<\/code>
\nGraphics2D g2 = (Graphics2D) g;<\/code>
\ng2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);<\/code>
\nShape s = createShape();<\/code>
\ng2.setPaint(paint);<\/code>
\ng2.fill(s);<\/code>
\ng2.setPaint(Color.white);<\/code>
\ng2.draw(s);<\/code>
\n}<\/code><\/p>\n

private void <\/strong>timeStep() {<\/code>
\nDimension d = getSize();<\/code>
\nif <\/strong>(d.width == 0 || d.height == 0)<\/code>
\nreturn<\/strong>;<\/code>
\nfor <\/strong>(int <\/strong>i = 0; i < coordinates.length; i++) {<\/code>
\ncoordinates[i] += deltas[i];<\/code>
\nint <\/strong>limit = (i % 2 == 0) ? d.width : d.height;<\/code>
\nif <\/strong>(coordinates[i] < 0) {<\/code>
\ncoordinates[i] = 0;<\/code>
\ndeltas[i] = -deltas[i];<\/code>
\n} else if <\/strong>(coordinates[i] > limit) {<\/code>
\ncoordinates[i] = limit - 1;<\/code>
\ndeltas[i] = -deltas[i];<\/code>
\n}<\/code>
\n}<\/code>
\n}<\/code><\/p>\n

private <\/strong>Shape createShape() {<\/code>
\nGeneralPath path = new <\/strong>GeneralPath();<\/code>
\npath.moveTo(coordinates[0], coordinates[1]);<\/code>
\nfor <\/strong>(int <\/strong>i = 2; i < coordinates.length; i += 4)<\/code>
\npath.quadTo(coordinates[i], coordinates[i + 1], coordinates[i + 2], coordinates[i + 3]);<\/code>
\npath.closePath();<\/code>
\nreturn <\/strong>path;<\/code>
\n}<\/code><\/p>\n

public static void <\/strong>main(String[] args) {<\/code>
\nJFrame f = new <\/strong>JFrame(\"Hypnosis\");<\/code>
\nf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);<\/code>
\nf.add(new <\/strong>Hypnosis1(4));<\/code>
\nf.setSize(300, 300);<\/code>
\nf.setVisible(true<\/strong>);<\/code>
\n}<\/code>
\n}<\/code><\/p>\n

 <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

import java.awt.Color; import java.awt.Dimension; import java.awt.GradientPaint; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Paint; import java.awt.RenderingHints; import java.awt.Shape; import java.awt.geom.GeneralPath; import javax.swing.JComponent; import javax.swing.JFrame; public class Hypnosis1 extends JComponent implements Runnable { private int[] coordinates; private int[] deltas; private Paint paint; public Hypnosis1(int numberOfSegments) { int numberOfCoordinates = numberOfSegments * 4 + 2; coordinates = new int[numberOfCoordinates]; deltas = new int[numberOfCoordinates]; for (int i = 0; i < numberOfCoordinates; i++) {<\/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":"Hypnosis animation","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-3587","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":3577,"url":"https:\/\/eliezerladeira.com.br\/blog\/is-event-dispatcher-thread\/","url_meta":{"origin":3587,"position":0},"title":"Is Event Dispatcher\u00a0Thread","author":"admin","date":"","format":false,"excerpt":"import\u00a0java.awt.Color; import\u00a0java.awt.Component; import\u00a0java.awt.Dimension; import\u00a0java.awt.event.ActionEvent; import\u00a0java.awt.event.ActionListener; import\u00a0java.util.Random; import\u00a0javax.swing.AbstractAction; import\u00a0javax.swing.ButtonGroup; import\u00a0javax.swing.JButton; import\u00a0javax.swing.JFrame; import\u00a0javax.swing.JLabel; import\u00a0javax.swing.JPanel; import\u00a0javax.swing.JRadioButton; import\u00a0javax.swing.JTable; import\u00a0javax.swing.SwingUtilities; import\u00a0javax.swing.table.AbstractTableModel; import\u00a0javax.swing.table.TableCellRenderer; public\u00a0class\u00a0IsEDTExample\u00a0extends\u00a0JPanel\u00a0{ private\u00a0boolean\u00a0keepRunning; private\u00a0static\u00a0int\u00a0RED\u00a0=\u00a00; private\u00a0static\u00a0int\u00a0BLUE\u00a0=\u00a01; private\u00a0static\u00a0int\u00a0GREEN\u00a0=\u00a02; private\u00a0static\u00a0int\u00a0VARIABLE\u00a0=\u00a03; private\u00a0static\u00a0int\u00a0SIZE\u00a0=\u00a03; private\u00a0int\u00a0threadShade; private\u00a0ColorTableModel\u00a0tableModel=\u00a0new\u00a0ColorTableModel(); private\u00a0Thread\u00a0colorShadeThread; public\u00a0IsEDTExample()\u00a0{ JTable\u00a0table\u00a0=\u00a0new\u00a0JTable(tableModel); table.setRowHeight(100); table.setDefaultRenderer(Object.class,\u00a0new\u00a0ColorRenderer()); add(table); add(new\u00a0JLabel(\"Thread\u00a0Color\u00a0Shade:\")); ButtonGroup\u00a0group\u00a0=\u00a0new\u00a0ButtonGroup(); JRadioButton\u00a0redOption\u00a0=\u00a0new\u00a0JRadioButton(\"Red\"); group.add(redOption); redOption.addActionListener(new\u00a0ActionListener()\u00a0{ public\u00a0void\u00a0actionPerformed(ActionEvent\u00a0e)\u00a0{ threadShade\u00a0=\u00a0RED; } }); JRadioButton\u00a0blueOption\u00a0=\u00a0new\u00a0JRadioButton(\"Blue\"); group.add(blueOption); blueOption.addActionListener(new\u00a0ActionListener()\u00a0{ public\u00a0void\u00a0actionPerformed(ActionEvent\u00a0e)\u00a0{ threadShade\u00a0=\u00a0BLUE; } }); JRadioButton\u00a0greenOption\u00a0=\u00a0new\u00a0JRadioButton(\"Green\"); group.add(greenOption);\u2026","rel":"","context":"Em "Programa\u00e7\u00e3o"","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":3587,"position":1},"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 "Programa\u00e7\u00e3o"","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":3579,"url":"https:\/\/eliezerladeira.com.br\/blog\/timer-based-animation\/","url_meta":{"origin":3587,"position":2},"title":"Timer based animation","author":"admin","date":"","format":false,"excerpt":"import\u00a0java.awt.Color; import\u00a0java.awt.Dimension; import\u00a0java.awt.Graphics; import\u00a0java.awt.Graphics2D; import\u00a0java.awt.RenderingHints; import\u00a0java.awt.event.ActionEvent; import\u00a0java.awt.event.ActionListener; import\u00a0java.awt.geom.Ellipse2D; import\u00a0javax.swing.JFrame; import\u00a0javax.swing.JPanel; import\u00a0javax.swing.Timer; public\u00a0class\u00a0TimerBasedAnimation\u00a0extends\u00a0JPanel\u00a0implements\u00a0ActionListener\u00a0{ private\u00a0Ellipse2D.Float\u00a0ellipse\u00a0=\u00a0new\u00a0Ellipse2D.Float(); private\u00a0double\u00a0esize; private\u00a0double\u00a0maxSize\u00a0=\u00a00; private\u00a0boolean\u00a0initialize\u00a0=\u00a0true; Timer\u00a0timer; ActionListener\u00a0updateProBar; public\u00a0TimerBasedAnimation()\u00a0{ setXY(20\u00a0*\u00a0Math.random(),\u00a0200,\u00a0200); timer\u00a0=\u00a0new\u00a0Timer(20,\u00a0this); timer.setInitialDelay(190); timer.start(); } public\u00a0void\u00a0setXY(double\u00a0size,\u00a0int\u00a0w,\u00a0int\u00a0h)\u00a0{ esize\u00a0=\u00a0size; ellipse.setFrame(10,\u00a010,\u00a0size,\u00a0size); } public\u00a0void\u00a0reset(int\u00a0w,\u00a0int\u00a0h)\u00a0{ maxSize\u00a0=\u00a0w\u00a0\/\u00a010; setXY(maxSize\u00a0*\u00a0Math.random(),\u00a0w,\u00a0h); } public\u00a0void\u00a0step(int\u00a0w,\u00a0int\u00a0h)\u00a0{ esize++; if\u00a0(esize\u00a0>\u00a0maxSize)\u00a0{ setXY(1,\u00a0w,\u00a0h); }\u00a0else\u00a0{ ellipse.setFrame(ellipse.getX(),\u00a0ellipse.getY(),\u00a0esize,\u00a0esize); } } public\u00a0void\u00a0render(int\u00a0w,\u00a0int\u00a0h,\u00a0Graphics2D\u00a0g2)\u00a0{ g2.setColor(Color.BLUE); g2.draw(ellipse); } public\u00a0void\u00a0paint(Graphics\u00a0g)\u00a0{ super.paintComponent(g); Graphics2D\u00a0g2\u00a0=\u00a0(Graphics2D)\u00a0g; RenderingHints\u00a0rh\u00a0=\u00a0new\u00a0RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); rh.put(RenderingHints.KEY_RENDERING,\u00a0RenderingHints.VALUE_RENDER_QUALITY);\u2026","rel":"","context":"Em "Programa\u00e7\u00e3o"","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":3611,"url":"https:\/\/eliezerladeira.com.br\/blog\/animation-bounce\/","url_meta":{"origin":3587,"position":3},"title":"Animation: bounce","author":"admin","date":"","format":false,"excerpt":"import\u00a0java.awt.BasicStroke; import\u00a0java.awt.BorderLayout; import\u00a0java.awt.Checkbox; import\u00a0java.awt.Color; import\u00a0java.awt.Dimension; import\u00a0java.awt.Font; import\u00a0java.awt.Frame; import\u00a0java.awt.GradientPaint; import\u00a0java.awt.Graphics; import\u00a0java.awt.Graphics2D; import\u00a0java.awt.Image; import\u00a0java.awt.Label; import\u00a0java.awt.Panel; import\u00a0java.awt.RenderingHints; import\u00a0java.awt.Shape; import\u00a0java.awt.Stroke; import\u00a0java.awt.event.ComponentAdapter; import\u00a0java.awt.event.ComponentEvent; import\u00a0java.awt.event.ItemEvent; import\u00a0java.awt.event.ItemListener; import\u00a0java.awt.font.FontRenderContext; import\u00a0java.awt.font.GlyphVector; import\u00a0java.awt.geom.GeneralPath; import\u00a0java.awt.geom.Rectangle2D; import\u00a0java.text.NumberFormat; import\u00a0java.util.Random; import\u00a0javax.swing.JFrame; import\u00a0javax.swing.JPanel; public\u00a0class\u00a0Bouncer\u00a0extends\u00a0JPanel\u00a0implements\u00a0Runnable\u00a0{ private\u00a0boolean\u00a0trucking\u00a0=\u00a0true; private\u00a0long[]\u00a0previousTimes;\u00a0\/\/\u00a0milliseconds private\u00a0int\u00a0previousIndex; private\u00a0boolean\u00a0previousFilled; private\u00a0double\u00a0frameRate;\u00a0\/\/\u00a0frames\u00a0per\u00a0second private\u00a0Image\u00a0image; public\u00a0static\u00a0void\u00a0main(String[]\u00a0args)\u00a0{ final\u00a0Bouncer\u00a0bouncer\u00a0=\u00a0new\u00a0Bouncer(); Frame\u00a0f\u00a0=\u00a0new\u00a0AnimationFrame(bouncer); f.setFont(new\u00a0Font(\"Serif\",\u00a0Font.PLAIN,\u00a012)); f.setSize(200,\u00a0200); Panel\u00a0controls\u00a0=\u00a0new\u00a0Panel(); controls.add(bouncer.createCheckbox(\"Anti.\",\u00a0Bouncer.ANTIALIASING)); controls.add(bouncer.createCheckbox(\"Trans.\",\u00a0Bouncer.TRANSFORM)); controls.add(bouncer.createCheckbox(\"Gradient\",\u00a0Bouncer.GRADIENT)); controls.add(bouncer.createCheckbox(\"Outline\",\u00a0Bouncer.OUTLINE)); controls.add(bouncer.createCheckbox(\"Dotted\",\u00a0Bouncer.DOTTED)); controls.add(bouncer.createCheckbox(\"Axes\",\u00a0Bouncer.AXES)); controls.add(bouncer.createCheckbox(\"Clip\",\u00a0Bouncer.CLIP)); f.add(controls,\u00a0BorderLayout.NORTH); f.setVisible(true);\u2026","rel":"","context":"Em "Programa\u00e7\u00e3o"","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":3581,"url":"https:\/\/eliezerladeira.com.br\/blog\/a-rotating-and-scaling-rectangle\/","url_meta":{"origin":3587,"position":4},"title":"A rotating and scaling\u00a0rectangle","author":"admin","date":"","format":false,"excerpt":"import\u00a0java.awt.Graphics; import\u00a0java.awt.Graphics2D; import\u00a0java.awt.Rectangle; import\u00a0java.awt.RenderingHints; import\u00a0java.awt.event.ActionEvent; import\u00a0java.awt.event.ActionListener; import\u00a0javax.swing.JFrame; import\u00a0javax.swing.JPanel; import\u00a0javax.swing.Timer; public\u00a0class\u00a0SwingTimerBasedAnimationScaleRotate\u00a0extends\u00a0JPanel\u00a0implements\u00a0ActionListener\u00a0{ Timer\u00a0timer; private\u00a0double\u00a0angle\u00a0=\u00a00; private\u00a0double\u00a0scale\u00a0=\u00a01; private\u00a0double\u00a0delta\u00a0=\u00a00.01; Rectangle.Float\u00a0r\u00a0=\u00a0new\u00a0Rectangle.Float(20,\u00a020,\u00a0200,\u00a0200); public\u00a0SwingTimerBasedAnimationScaleRotate()\u00a0{ timer\u00a0=\u00a0new\u00a0Timer(10,\u00a0this); timer.start(); } public\u00a0void\u00a0paint(Graphics\u00a0g)\u00a0{ int\u00a0h\u00a0=\u00a0getHeight(); int\u00a0w\u00a0=\u00a0getWidth(); Graphics2D\u00a0g2d\u00a0=\u00a0(Graphics2D)\u00a0g; g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,\u00a0RenderingHints.VALUE_ANTIALIAS_ON); g2d.setRenderingHint(RenderingHints.KEY_RENDERING,\u00a0RenderingHints.VALUE_RENDER_QUALITY); g2d.translate(w\u00a0\/\u00a02,\u00a0h\u00a0\/\u00a02); g2d.rotate(angle); g2d.scale(scale,\u00a0scale); g2d.fill(r); } public\u00a0static\u00a0void\u00a0main(String[]\u00a0args)\u00a0{ JFrame\u00a0frame\u00a0=\u00a0new\u00a0JFrame(\"Moving\u00a0star\"); frame.add(new\u00a0SwingTimerBasedAnimationScaleRotate()); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(420,\u00a0250); frame.setLocationRelativeTo(null); frame.setVisible(true); } public\u00a0void\u00a0actionPerformed(ActionEvent\u00a0e)\u00a0{ if\u00a0(scale\u00a0<\u00a00.01)\u00a0{ delta\u00a0=\u00a0-delta; }\u00a0else\u00a0if\u00a0(scale\u00a0>\u00a00.99)\u00a0{ delta\u00a0=\u00a0-delta; } scale\u00a0+=\u00a0delta; angle\u00a0+=\u00a00.01; repaint(); } } \u00a0","rel":"","context":"Em "Programa\u00e7\u00e3o"","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":3596,"url":"https:\/\/eliezerladeira.com.br\/blog\/como-criar-animacoes-paint-e-thread\/","url_meta":{"origin":3587,"position":5},"title":"Como criar anima\u00e7\u00f5es: Paint e\u00a0Thread","author":"admin","date":"","format":false,"excerpt":"import\u00a0java.awt.Color; import\u00a0java.awt.Graphics; import\u00a0java.awt.Insets; import\u00a0java.util.Timer; import\u00a0java.util.TimerTask; import\u00a0javax.swing.JFrame; public\u00a0class\u00a0Animate\u00a0extends\u00a0JFrame\u00a0{ private\u00a0static\u00a0int\u00a0DELAY\u00a0=\u00a0100; Insets\u00a0insets; Color\u00a0colors[]\u00a0=\u00a0{\u00a0Color.RED,\u00a0Color.ORANGE,\u00a0Color.YELLOW,\u00a0Color.GREEN, Color.BLUE,\u00a0Color.MAGENTA\u00a0}; public\u00a0void\u00a0paint(Graphics\u00a0g)\u00a0{ super.paint(g); if\u00a0(insets\u00a0==\u00a0null)\u00a0{ insets\u00a0=\u00a0getInsets(); } \/\/\u00a0Calculate\u00a0each\u00a0time\u00a0in\u00a0case\u00a0of\u00a0resize int\u00a0x\u00a0=\u00a0insets.left; int\u00a0y\u00a0=\u00a0insets.top; int\u00a0width\u00a0=\u00a0getWidth()\u00a0-\u00a0insets.left\u00a0-\u00a0insets.right; int\u00a0height\u00a0=\u00a0getHeight()\u00a0-\u00a0insets.top\u00a0-\u00a0insets.bottom; int\u00a0start\u00a0=\u00a00; int\u00a0steps\u00a0=\u00a0colors.length; int\u00a0stepSize\u00a0=\u00a0360\u00a0\/\u00a0steps; synchronized\u00a0(colors)\u00a0{ for\u00a0(int\u00a0i\u00a0=\u00a00;\u00a0i\u00a0<\u00a0steps;\u00a0i++)\u00a0{ g.setColor(colors[i]); g.fillArc(x,\u00a0y,\u00a0width,\u00a0height,\u00a0start,\u00a0stepSize); start\u00a0+=\u00a0stepSize; } } } public\u00a0void\u00a0go()\u00a0{ TimerTask\u00a0task\u00a0=\u00a0new\u00a0TimerTask()\u00a0{ public\u00a0void\u00a0run()\u00a0{ Color\u00a0c\u00a0=\u00a0colors[0]; synchronized\u00a0(colors)\u00a0{ System.arraycopy(colors,\u00a01,\u00a0colors,\u00a00,\u00a0colors.length\u00a0-\u00a01); colors[colors.length\u00a0-\u00a01]\u00a0=\u00a0c; } repaint(); } }; Timer\u00a0timer\u00a0=\u00a0new\u00a0Timer(); timer.schedule(task,\u00a00,\u00a0DELAY); } public\u00a0static\u00a0void\u00a0main(String\u00a0args[])\u00a0{ Animate\u00a0f\u00a0=\u00a0new\u00a0Animate(); f.setSize(200,\u00a0200); f.show();\u2026","rel":"","context":"Em "Programa\u00e7\u00e3o"","block_context":{"text":"Programa\u00e7\u00e3o","link":"https:\/\/eliezerladeira.com.br\/blog\/category\/tecnologia\/programacao\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/eliezerladeira.com.br\/blog\/wp-json\/wp\/v2\/posts\/3587","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eliezerladeira.com.br\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eliezerladeira.com.br\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eliezerladeira.com.br\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/eliezerladeira.com.br\/blog\/wp-json\/wp\/v2\/comments?post=3587"}],"version-history":[{"count":1,"href":"https:\/\/eliezerladeira.com.br\/blog\/wp-json\/wp\/v2\/posts\/3587\/revisions"}],"predecessor-version":[{"id":3588,"href":"https:\/\/eliezerladeira.com.br\/blog\/wp-json\/wp\/v2\/posts\/3587\/revisions\/3588"}],"wp:attachment":[{"href":"https:\/\/eliezerladeira.com.br\/blog\/wp-json\/wp\/v2\/media?parent=3587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eliezerladeira.com.br\/blog\/wp-json\/wp\/v2\/categories?post=3587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eliezerladeira.com.br\/blog\/wp-json\/wp\/v2\/tags?post=3587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}