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How to Optimize RecyclerView performance by implementing the ViewHolder 2 Weeks Ago by Mikekelvin …number of findViewById() calls. public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> { public… static class ViewHolder extends RecyclerView.ViewHolder { TextView textView; public ViewHolder(View … Bouncing Balls: Creating a new ball when two balls collide 2 Weeks Ago by jprog1000 … java.awt.Graphics; import java.awt.Color; public class BallPanel extends JPanel implements ActionListener { private int delay = 10; protected Timer timer… Re: Bouncing Balls: Creating a new ball when two balls collide 2 Weeks Ago by toneewa … java.util.ArrayList; import java.util.Arrays; public class BallPanel extends JPanel implements ActionListener { private static final int delay = 16; protected… Re: Bouncing Balls: Creating a new ball when two balls collide 2 Weeks Ago by toneewa … java.util.ArrayList; import java.util.Arrays; public class BallPanel extends JPanel implements ActionListener { private static final int delay = 1; protected… Re: Bouncing Balls: Creating a new ball when two balls collide 2 Weeks Ago by jprog1000 Thank you so much for your reply and additions! It is certainly working as I wanted. I will read through the code you have added and ask you any questions I might have. I hope you don't mind. Regards Re: Bouncing Balls: Creating a new ball when two balls collide 2 Weeks Ago by Dani I’ll mark this question solved :) Re: Bouncing Balls: Creating a new ball when two balls collide 2 Weeks Ago by Dani … oh, sorry, missed the bit about you still needing clarifications. Feel feee to ask :) I’ll now unmark this topic as solved. /facepalm Re: Bouncing Balls: Creating a new ball when two balls collide 2 Weeks Ago by jprog1000 Hello, Thank you again so much! All your additions are clear, but it seems like whenever two balls collide, more than one ball is added to the arraylist and painted. Any way to have just one ball added to the panel for every collision? Have some kind of a toggle flag in paintcomponent? Regards Re: Bouncing Balls: Creating a new ball when two balls collide 2 Weeks Ago by toneewa Yes, this is true. Overlapping ball spawns can do that causing a chain reaction. Something like that could be done. How you handle the spawning of the new ball is what I played with a bit before. You will see better collision detection changing to: g.fillOval(ball.getX(), ball.getY(), 1 * ball.getRadius(), 1 * ball.getRadius()); Re: Bouncing Balls: Creating a new ball when two balls collide 1 Week Ago by jprog1000 Got it. Thank you so much! Re: Bouncing Balls: Creating a new ball when two balls collide 1 Week Ago by vortex_1 In my opinion, implementing a feature in a bouncing balls simulation where a new ball is created when two balls collide can add an interesting and dynamic element to the simulation. This feature can introduce a sense of complexity and unpredictability, making the simulation more engaging and challenging for users. It could also provide an … Re: Bouncing Balls: Creating a new ball when two balls collide 1 Week Ago by jprog1000 Great reply, vortex! Agree with all your points. Re: Bouncing Balls: Creating a new ball when two balls collide 1 Week Ago by aishamushtaq Hi, Its helpful for me. I got my answer. Re: Need for Inheritance in Java 9 Years Ago by Slavi extends keyword is part of the syntax showing that you are … Re: FOnt changes in Jtree 10 Years Ago by mKorbel extends **JEditorPane** implements **TreeCellRenderer** - please whats goal, reason('s maybe), simple … Re: Event handlers - Swing 14 Years Ago by masijade "extends" is inheritance. Composition is using the base classes rather … extends problem 14 Years Ago by kilermage … class. Here is what the begining: [CODE]public class CombatHandler extends client {[/CODE] But when I compile I get this error… symbol symbol : constructor client() location: class client public class CombatHandler extends client { ^ Note: stream.java uses or overrides a deprecated API… extends JFrame implements KeyListener 15 Years Ago by TheWhite … javax.swing.JFrame; import javax.swing.SwingUtilities; public class Testing extends JFrame implements KeyListener{ public static void main(String[] args){ SwingUtilities… Re: extends JFrame implements KeyListener 15 Years Ago by cbalu … javax.swing.JFrame; import javax.swing.SwingUtilities; public class Testing extends JFrame implements KeyListener{ public static void main(String[] args){ SwingUtilities… Interface ... extends ... implements ... (Need help) 16 Years Ago by balgarath …rmi.Remote; import java.rmi.RemoteException; public interface ToyStore extends Remote implements Observer { String sayHi() throws RemoteException; public…rmi.Remote; import java.rmi.RemoteException; public interface ToyFactory extends Remote implements Observable { String sayHello() throws RemoteException; public… Re: read or open any java file come after extends keyword in java? 8 Years Ago by Mar. Na. … e.printStackTrace(); } /////////////////////////////////////// //////open what come after extends keyword// try { String fileN = "C:/…B file/// package filename; class B extends A { public void f2() { … read or open any java file come after extends keyword in java? 8 Years Ago by Mar. Na. … to read any file.java that come after extends keyword. public class CyclomaticComplexity{ public static void …e.printStackTrace(); }} } ////////////////////////////// ///filename program is public class filename extends B {public static void main(String[] args) { int s=9… Re: Raw to <? extends Object> 13 Years Ago by ~s.o.s~ …no intermixing with legacy code). <?> same as <? extends object>. Even though <?> is a reifiable type… be any type or unknown supertype. Raw -> <? extends Object> unchecked conversion warning since Raw is a reifiable… type and <? extends Object> is not. Hence type safety is not … Re: read or open any java file come after extends keyword in java? 8 Years Ago by Mar. Na. …access all classes related to my filename.java .. filename extends B And in the B class , there is …so on .... so When I read file that contain extends (inheritance)...count how many coupling classes associated with that …find how many inherited classes for example. . Filename extends B. . B extends A . ..so the coupling classes must be 2.... Re: Raw to <? extends Object> 13 Years Ago by yapkm01 …no intermixing with legacy code). <?> same as <? extends object>. Even though <?> is a reifiable type… be any type or unknown supertype. Raw -> <? extends Object> unchecked conversion warning since Raw is a reifiable… type and <? extends Object> is not. Hence type safety is not … Re: read or open any java file come after extends keyword in java? 8 Years Ago by Mar. Na. But B is B.java and its exist in package filename ..so I want to open and read any file or class after extends keyword ..because also the B extends A class and also I want to read content of it and write it in an empty file.... Re: Raw to <? extends Object> 13 Years Ago by ~s.o.s~ …difference between <?> (Unbounded wildcard) and <? extends Objects> (Since Object is the highest upper bound … absolutely no difference between "?" and "? extends Object" [i]except[/i] for the fact that…whereas a parameterized type with a bound (List<? extends Object>) is not reifiable. Assigning [icode]List[/… Re: Raw to <? extends Object> 13 Years Ago by yapkm01 … is absolutely no difference between "?" and "? extends Object" [i]except[/i] for the fact that parameterized…] ========================================================================================== What about from List <?> to List <? extends Object>? This doesn't generate a compiler unchecked conversion… difference between extends and super 11 Years Ago by rahul.ch List<? extends Integer> list = new ArrayList<Integer>(); for (Integer …(element); For the first three lines as Case 1 using extends it compiles fine. But for Case 2 of next three… says incompatible types. Found Object, required Integer. My confusion is *? extends Integer* being **anything that is an Integer or sub of… Extending a class that extends a class and implements an interface 10 Years Ago by Pyler … I've done it private class KellyCoffee<Order extends Queue<Order>> implements OrderLineInterface{} Now… implement `CheckOut` public class CheckOut<Order> extends KellysCoffee<Order>{} I get a bound mismatch… vlaid substitute for the bounded parameter <Order extends Queue<Order>> of the type …