java programming language 4th edition

message, int delay) {this.message = message;//Create a timertimer timer = new Timer (delay, new TimerListener ()); Timer.start ();} public void Paintcomponent (Graphics g) {super.paintcomponent (g); if (Xcoordinate > GetWidth ()) {xcoordinate =-20;} Xcoordinate + = 5;g.drawstring (message, xcoordinate, ycoordinate);} Class TimerListener implements ActionListener {/** Handle actionevent */public void actionperformed (ActionEvent e) {Repai NT ();}}}}Implementing messages moving through windows"Fu

1. In an object-oriented programming language,PolymorphismYes inheritanceData abstractionAndInheritanceThe third basic feature. 2. "encapsulate" a new data type by combining features and behaviors. 3. "implement hiding" by "privatize" the detailsSeparation of interfaces and ImplementationsOpen. 4. The role of polymorphism is to eliminateCouplingLink. 5. Coupling refers to two or more entities.Mutual depende

the execution has completed.Input Sample:3 31 1 1 2 0 1 2 1-1-11Sample output:7time limit: 500ms memory limit: 32000kb Import Java.util.scanner;public class Cellmachine {static Scanner in = new Scanner (system.in); static int width = 0;//width st atic int height = 0;//height static int[][] field_old;//old grid static int[][] field_new;//new mesh static int times;//steps Public stat IC void Main (string[] args) {//First enter two positive integers with a range of [3,102], which in turn represent

Manipulate the window to display the action steps in the consolePackage Chapter16;import Java.awt.event.windowevent;import Java.awt.event.windowlistener;import javax.swing.JFrame ; @SuppressWarnings ("Serial") public class Testwindowevent extends JFrame {public testwindowevent () {Addwindowlistener ( New WindowListener () {///anonymous inner class @overridepublic void windowopened (WindowEvent e) {System.out.println ("open");} @Overridepublic void Windowiconified (WindowEvent e) {System.out.prin

1. Can a button trigger the windowevent? Can a button trigger MouseEvent? Can a button trigger ActionEvent?JButton can produce mouseevent and ActionEvent. Cannot trigger WindowEvent2. Can a single source have multiple listeners? Can a listener have multiple sources? Can a listener make its own listener?YES. YES. YES3. Can internal classes be used in other classes that are not nested in him?Objects of an inner class is often created in the outer class. But the can also create an object of a inner

Use of Setactioncommand () and Getactioncommand ()/** * Function: event handling mechanism * */package Com.test3;import java.awt.borderlayout;import java.awt.color;import java.awt.Graphics; Import Java.awt.event.actionevent;import Java.awt.event.actionlistener;import Javax.swing.jbutton;import Javax.swing.jframe;import Javax.swing.JPanel; @SuppressWarnings ("Serial") public class Demo9_3 extends Jframe{mypanel P1 = new Mypanel (); JButton button1 = new JButton ("Black"); JButton button2 = new JB

) {super.paintcomponent (g); G.drawoval (GetWidth ()/2-radius, getheight ()/2-r adius,2 * radius, 2 * radius);}} Class Enlargelistener implements ActionListener {//First step: Create Enlargelistener Class Implementation ActionListener interface// Fifth step: In order for actionperformed to access the Enlarge method, define the class as Inner class@overridepublic void actionperformed (ActionEvent e) {// Fourth step: Overwrite the Actionperformed method in the interface once the operation is monit

Java.awt.flowlayout;import Java.awt.event.actionevent;import Java.awt.event.actionlistener;import javax.swing.jbutton;import javax.swing.JFrame; @SuppressWarnings ("Serial") public class Anonymouslistenerdemo extends jframe{private JButton stringnew = new JButton ("new");p rivate JButton Stringop En = new JButton ("open");p rivate JButton stringsave = new JButton ("Save");p rivate JButton stringPrint = new JButton ("Print ");p ublic Anonymouslistenerdemo () {setlayout (New FlowLayout ()); Add (

Click the text mouse drag the text will be dragged with the mousePackage Chapter16;import Java.awt.borderlayout;import Java.awt.graphics;import java.awt.event.mouseevent;import Java.awt.event.mousemotionlistener;import javax.swing.jframe;import Javax.swing.JPanel; @SuppressWarnings ("Serial ") public class Movemessagedemo extends Jframe{public Movemessagedemo () {Moveablemessagepanel p = new Moveablemessagepanel (); SetLayout (new BorderLayout ()); Add (P);} public static void Main (string[]

*/public void setnumberofyears (int numberofyears) {this.numberofyears = Numberofyears ; }/** return Loanamount */public double Getloanamount () {return loanamount; }/** Set a newloanamount */public void Setloanamount (double loanamount) {this.loanamount = Loanamount; }/** Find Monthly payment */public double getmonthlypayment () {Double monthlyinterestrate = ANNUALINTERESTRATE/1 200; Double monthlypayment = Loanamount * Monthlyinterestrate/(1-(Math.pow (1/(1 + monthlyinterestrate), numbe