{"id":10385,"date":"2015-08-27T07:46:58","date_gmt":"2015-08-27T11:46:58","guid":{"rendered":"http:\/\/bangla.salearningschool.com\/?p=10385"},"modified":"2015-08-24T09:57:23","modified_gmt":"2015-08-24T13:57:23","slug":"circledrawer3-java-applet-that-uses-a-named-nested-class-to-handle-mouse-events-and-draw-circles-illustrates-third-approach-to-event-handling-with-listeners-using-inner-classes","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=10385","title":{"rendered":"CircleDrawer3.java Applet that uses a named nested class to handle mouse events and draw circles. Illustrates third approach to event-handling with listeners: using inner classes."},"content":{"rendered":"<pre>import java.applet.Applet;\r\nimport java.awt.*;\r\nimport java.awt.event.*;\r\n\r\n\/** Draw circles centered where the user clicks.\r\n\u00a0*\u00a0 Uses named inner classes.\r\n\u00a0* \u00a0\r\n\r\n\r\n\u00a0******************\r\n\r\npublic class CircleDrawer3 extends Applet {\r\n\u00a0 public void init() {\r\n\u00a0\u00a0\u00a0 setForeground(Color.blue);\r\n\u00a0\u00a0\u00a0 addMouseListener(new CircleListener());\r\n\u00a0 }\r\n\r\n\u00a0 private class CircleListener extends MouseAdapter {\r\n\u00a0\u00a0\u00a0 private int radius = 25;\r\n\r\n\u00a0\u00a0\u00a0 public void mousePressed(MouseEvent event) {\r\n\u00a0\u00a0\u00a0\u00a0\u00a0 Graphics g = getGraphics();\r\n\u00a0\u00a0\u00a0\u00a0\u00a0 g.fillOval(event.getX()-radius,\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 event.getY()-radius,\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2*radius,\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 2*radius);\r\n\u00a0\u00a0\u00a0 }\r\n\u00a0 }\r\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>import java.applet.Applet; import java.awt.*; import java.awt.event.*; \/** Draw circles centered where the user clicks. \u00a0*\u00a0 Uses named inner classes. \u00a0* \u00a0 \u00a0****************** public class CircleDrawer3 extends Applet { \u00a0 public void init() { \u00a0\u00a0\u00a0 setForeground(Color.blue); \u00a0\u00a0\u00a0 addMouseListener(new CircleListener()); \u00a0 } \u00a0 private class CircleListener extends MouseAdapter { \u00a0\u00a0\u00a0 private int radius = 25; \u00a0\u00a0\u00a0 public &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"http:\/\/bangla.sitestree.com\/?p=10385\">Continue reading<\/a><\/p>\n","protected":false},"author":130,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1417,1424],"tags":[706,308,285],"class_list":["post-10385","post","type-post","status-publish","format-standard","hentry","category-code-programming-samples--","category-javaj2eej2me","tag-code","tag-java","tag-285","item-wrap"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":26757,"url":"http:\/\/bangla.sitestree.com\/?p=26757","url_meta":{"origin":10385,"position":0},"title":"CircleDrawer3.java Applet that uses a named nested class to handle mouse events and draw circles. Illustrates third approach to event-handling with listeners: using inner classes. #Programming Code Examples #Java\/J2EE\/J2ME #Mouse and Keyboard Events","author":"Author-Check- Article-or-Video","date":"April 30, 2021","format":false,"excerpt":"import java.applet.Applet; import java.awt.*; import java.awt.event.*; \/** Draw circles centered where the user clicks. * Uses named inner classes. * ****************** public class CircleDrawer3 extends Applet { public void init() { setForeground(Color.blue); addMouseListener(new CircleListener()); } private class CircleListener extends MouseAdapter { private int radius = 25; public void mousePressed(MouseEvent event)\u2026","rel":"","context":"In &quot;FromSitesTree.com&quot;","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10387,"url":"http:\/\/bangla.sitestree.com\/?p=10387","url_meta":{"origin":10385,"position":1},"title":"Applet that uses a anonymous nested class to handle mouse events and draw circles. Variation on third approach to event-handling: using inner classes.","author":"","date":"August 27, 2015","format":false,"excerpt":"import java.applet.Applet; import java.awt.*; import java.awt.event.*; \/** Draw circles centered where the user clicks. \u00a0*\u00a0 Uses anonymous inner classes. \u00a0* \u00a0 ********************** public class CircleDrawer4 extends Applet { \u00a0 public void init() { \u00a0\u00a0\u00a0 setForeground(Color.blue); \u00a0\u00a0\u00a0 addMouseListener \u00a0\u00a0\u00a0\u00a0\u00a0 (new MouseAdapter() { \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 private int radius = 25; \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 public void\u2026","rel":"","context":"In &quot;Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8&quot;","block_context":{"text":"Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8","link":"http:\/\/bangla.sitestree.com\/?cat=1417"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10297,"url":"http:\/\/bangla.sitestree.com\/?p=10297","url_meta":{"origin":10385,"position":2},"title":"draws a circle wherever mouse was pressed","author":"","date":"August 26, 2015","format":false,"excerpt":"CircleListener.java A subclass of MouseAdapter that draws a circle wherever mouse was pressed. Illustrates first approach to event-handling with listeners: attaching a separate listener *********** import java.applet.Applet; import java.awt.*; import java.awt.event.*; \/** The listener used by CircleDrawer1. Note call \u00a0*\u00a0 to getSource to obtain reference to the applet. \u00a0* \u00a0\u2026","rel":"","context":"In &quot;Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8&quot;","block_context":{"text":"Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8","link":"http:\/\/bangla.sitestree.com\/?cat=1417"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":26759,"url":"http:\/\/bangla.sitestree.com\/?p=26759","url_meta":{"origin":10385,"position":3},"title":"Applet that uses a anonymous nested class to handle mouse events and draw circles. Variation on third approach to event-handling: using inner classes. #Programming Code Examples #Java\/J2EE\/J2ME #Mouse and Keyboard Events","author":"Author-Check- Article-or-Video","date":"April 30, 2021","format":false,"excerpt":"import java.applet.Applet; import java.awt.*; import java.awt.event.*; \/** Draw circles centered where the user clicks. * Uses anonymous inner classes. * ********************** public class CircleDrawer4 extends Applet { public void init() { setForeground(Color.blue); addMouseListener (new MouseAdapter() { private int radius = 25; public void mousePressed(MouseEvent event) { Graphics g = getGraphics();\u2026","rel":"","context":"In &quot;FromSitesTree.com&quot;","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10383,"url":"http:\/\/bangla.sitestree.com\/?p=10383","url_meta":{"origin":10385,"position":4},"title":"Tiny applet that uses CircleListener to handle mouse events.","author":"","date":"August 27, 2015","format":false,"excerpt":"import java.applet.Applet; import java.awt.*; \/** Draw circles centered where the user clicks. \u00a0*\u00a0 Uses an external listener. \u00a0* \u00a0 \u00a0*********** public class CircleDrawer1 extends Applet { \u00a0 public void init() { \u00a0\u00a0\u00a0 setForeground(Color.blue); \u00a0\u00a0\u00a0 addMouseListener(new CircleListener()); \u00a0 } }","rel":"","context":"In &quot;Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8&quot;","block_context":{"text":"Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8","link":"http:\/\/bangla.sitestree.com\/?cat=1417"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":27239,"url":"http:\/\/bangla.sitestree.com\/?p=27239","url_meta":{"origin":10385,"position":5},"title":"draws a circle wherever mouse was pressed #Programming Code Examples #Java\/J2EE\/J2ME #Advanced Swing","author":"Author-Check- Article-or-Video","date":"May 15, 2021","format":false,"excerpt":"CircleListener.java A subclass of MouseAdapter that draws a circle wherever mouse was pressed. Illustrates first approach to event-handling with listeners: attaching a separate listener *********** import java.applet.Applet; import java.awt.*; import java.awt.event.*; \/** The listener used by CircleDrawer1. Note call * to getSource to obtain reference to the applet. * ***************\u2026","rel":"","context":"In &quot;FromSitesTree.com&quot;","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/10385","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/users\/130"}],"replies":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10385"}],"version-history":[{"count":1,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/10385\/revisions"}],"predecessor-version":[{"id":10386,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/10385\/revisions\/10386"}],"wp:attachment":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10385"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10385"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}