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Cannot Cast From Graphics To Graphics2d

posted 4 years ago In the text I'm working through, the author says The paintComponent() method of a JComponent gives you a graphics context of type Graphics that you can use The new instance of the given class is created, memory is allocated for it, and a special method defined in the given class is called. more hot questions question feed lang-java about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation In case you're concerned about the possibility of a ClassCastException, you needn't be. weblink

But the objects are now Graphics2D so you need to cast the passed object to be a Graphics2D object to be able to use the Graphics2D methods. To create instances for them, the new operator is used. If any more code or information is required from my Play class please tell me and I will post it. See: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4262543 I am closing this bug as invalid since it is not NetBeans Graph module related issue. http://stackoverflow.com/questions/14547540/cannot-cast-from-graphics-to-graphics2d

Copyright 2006 - 2015, Java Programming Forum FAQs Search RecentTopics FlaggedTopics HotTopics Best Topics Register / Login Post Reply Bookmark Topic Watch Topic New Topic programming forums Java Java JSRs Mobile But what I was getting at in my original question was the author seems to be saying "since the type is already dog, we can type-cast it to dog." Ernest java graphics graphics2d rectangles share|improve this question edited Nov 19 '15 at 5:17 jiaweizhang 5821525 asked Jan 3 '13 at 15:15 Rahul Khosla 179219 Do you see these compile-time

If a reviewer makes significant contributions to improving a paper, may he/she suggest becoming a coauthor? If you have more information, reopen the issue. Why do some airlines have different flight numbers for IATA and ICAO? Browse other questions tagged casting graphics2d importerror or ask your own question.

No problem! Optional: modify drawing parameters g2d.setPaint(fillColorOrPattern); Draw an outlined or solid version of the Shape g2d.draw(circle); // outlined circle g2d.fill(square); // solid square Back to Main Page | Shapes Even with confusing Graphics2D class, I do not longer see the error after rewriting imports as shown. http://stackoverflow.com/questions/14141685/i-am-having-problems-setting-graphics2d Mysterious creeper-like explosions I changed one method signature and broke 25,000 other classes.

posted 4 years ago Okay, I get it. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed int idx = o.indexOf('s'); // Tell the compiler "o actually contains a String" String s = (String) o; // This compiles, of course! And yes, it is reproducible.

Does the "bat wing" aircraft paint design have a proper name? http://www.java-forums.org/new-java/32713-graphics-graphics2d-casting.html The first object is created using new StringTokenizer() with one argument, a String object named quote1 (line 9). The compiler doesn't understand what the real type of the object is unless you tell it, and that cast is basically the way to tell the compiler "even though you think The graphic is JPanel's graphic.

I am pasting it into my notes. have a peek at these guys It sounds to me like the graphics context is actually NOT of type Graphics2D, or there would be no type-cast necessary. Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Making a large file using the terminal For a better animation of the solution from NDSolve What is the definition of "rare language"?

Written by two expert technical writers, it has been acclaimed for its clear and personable writing, for its extensive use of examples, and for its logical and complete organization....https://books.google.com/books/about/Sams_Teach_Yourself_Java_2_in_21_Days.html?id=cMaxk_GQqnAC&utm_source=gb-gplus-shareSams Teach Yourself Why cast an A-lister for Groot? I changed one method signature and broke 25,000 other classes. http://electrictricycle.net/cannot-cast/cannot-cast-from-actionform.html General Approach Since Graphics2D is actually an extension of the Graphics class in Java, we need to first cast a basic Graphics object to a Graphics2D object.

Page 1 of 11 Next > + Share This 🔖 Save To Your Account Related Resources Store Articles Blogs Programmer's Guide to Java SE 8 Oracle Certified Associate (OCA), A By On 1941 Dec 7, could Japan have destroyed the Panama Canal instead of Pearl Harbor in a surprise attack? This creates a StringTokenizer object that uses the default delimiters, which are blank spaces, tabs, newlines, carriage returns, or formfeed characters.

share|improve this answer answered Jan 27 '13 at 13:06 h22 10.8k73254 Writing import java.awt.Graphics will not help if he has another Graphics class in the same package.

For more information on the Java Plugin, Click here. Although it's a class, it can be assigned a value with a literal as if it were a primitive data type. more hot questions question feed lang-java about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation downcasting won't add any new atributes and methoeds to the graphics object right???

Creating a table with FIXED length column widths Wait... The following code works: import java.awt.*; import javax.swing.*; public class Pv2 extends JPanel { public static void main (String []args){ JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(200,200); frame.setVisible(true); frame.setContentPane(new Pv2()); } Unfortunately, you can't call those methods through a variable of type "Graphics," simply because they're not part of that class. this content I even tried to download some prepared codes and the error was the same.

Not the answer you're looking for? How can I prove its value? Browse other questions tagged java graphics graphics2d rectangles or ask your own question. For example, the text "02/20/67" could be divided into three tokens--"02", "20", and "67"--using the slash character (/) as a delimiter.

You develop classes, create objects out of those classes, and use them with other classes and objects. Why the cast isn't allowed? Comment 5 Marian Mirilovic 2006-05-13 13:20:51 UTC closed Format For Printing -XML -Clone This Bug -Top of page First Last Prev Next This bug is not in your last search more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed