I'm using the book "How to Program in Java 9th Edition". The following is code from that book. I'm using eclipse. When the code is run the images are not showing up in the frame. The images are located in the directory with the java file and I have tried using the fully qualified image locations with no success. I've looked around on the web but can't see any reason why this code won't work. The code compiles and no errors are reported.
// Fig. 9.13: LabelDemo.java // Demonstrates the use of labels package Fig9_13DisplayTextImagesWithLabels; import java.awt.BorderLayout; import javax.swing.ImageIcon; import javax.swing.JLabel; import javax.swing.JFrame; public class LabelDemo
I have been writing the below Dinner Menu Applet; however some text is not showing on the applet and it is not adding the 'desserts" section correctly especially the one that says "rice Pudding". I've tried it in so many different ways and it's sill not working correctly.
import java.applet.*; import java.awt.*; import java.awt.event.*; public class DinnerMenuApplet extends Applet implements ItemListener { Label dinnerMenu = new Label("Dinner Menu");
I have a super class and an inherited class. What it is supposed to do is display random images in one applet. The images dont match the words and images dont match the wording. What am I doing wrong? Probably a few errors.
Super Class:
import java.awt.Color;; public class Dukes { private Color noseColor = Color.red; // default Dukes have red noses private String action = "../../images/duke/dukeWave.gif"; //default Dukes are friendly private String whatDoing = "Give me something to do"; private String message= ""; public Dukes() { int rint = (int)(Math.random() * 3); // randomly generates a 0, 1, or 2 if (rint == 0)
So I'm trying to make an applet that displays images of playing cards. The applet should load a deck of 52 playing card images (the folder is called "images"). The applet should shuffle the deck (using a random number generator) and display the first 10 cards of the shuffled deck. I then have to display the cards in two rows of five cards each.
With this code I have about 100 errors and I'm not sure what I'm doing wrong:
Exception in thread "main" java.lang.NullPointerException at javax.swing.ImageIcon.<init>(ImageIcon.java:205) at GUI.<init>(GUI.java:26) at Apples.main(Apples.java:7)
i think the problem is to do with my images not being recognised. I put them in my source in User>...>workspace>src which is correct as far as i know. From what i know the images should show up if i look at my src file in eclipse but they dont. I tried changing the file type from .png to .jpg but it makes no difference.
import java.awt.*; import java.awt.event.*; import javax.swing.*; public class C1 extends JFrame { public C1() { JMenuBar b = new JMenuBar(); b.setBackground(Color.green); setJMenuBar(b); setVisible(true); } public static void main(String[] args) { C1 c = new C1(); } }
In my if statement on line 46 & 47 im trying to add the buttons to the screen if the player has lost and the "game over" screen have popped up. But the buttons aren't showing... what am i doing wrong?
I'm trying to show mysql data in JSF using this example [URL] .... . I figured out what <h:dataTable value="#{userBean.getUserList()}" var="u" border="1"> must be <h:dataTable value="#{userBean.userList}" var="u" border="1"> but getting error:
09:08:38,654 ERROR [stderr] (http--127.0.0.1-8080-1) at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:307)
09:08:38,654 ERROR [stderr] (http--127.0.0.1-8080-1) at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:101)
MyGraphics worked before I added a background but, even now when I take the background away it isn't showing up.
package com.snow.game; import javax.swing.*; import java.awt.*; class MyGraphics extends JComponent { //creating a class for graphics public void draw(Graphics g){ //calling Graphics making a new graphics (g) now you can use it to make objects g.drawRect(10, 10, 50, 50); //Draws a rectangle
I have one code [taking from on line SCJP exam preparation site]. I have 2 question in my mind:
1) addValue() is non static method then why it is running without object inside constructor. By this rule it should show compilation error. 2) With ref variable of parent always non overridden methods of parent run then it must value of 10 [If i forgot 1st point ]
But it is giving 40. Code is as below:
class Base{ int value = 0; Base(){ addValue(); } void addValue(){ value += 10;
How do I write a program that shows the max and the min value of a float integer? like for example in order to get the max value of a long integer we type System.out.println(Integer.MAX_VALUE); How would I do that for a float integer?
I'm attempting to add a Jpanel in a JFrame but it isn't working out.
import javax.swing.JFrame; import javax.swing.JPanel; public class stepone { public static void main (String[]args){ JFrame frame = new JFrame("CSC LAB 12"); JPanel colorJPanel = new JPanel(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
I have three classes.. 1. panel class 2. frame class and 3. tester class...I am creating the objects like so but when I add button to panel then panel to frame I am not seeing the button. here is my code
import javax.swing.JButton; import javax.swing.JPanel; public class Panel extends JPanel{ private JPanel p; private JButton b;
But apparently i was wrong and all i get is an empty JFrame and no Dialog. I even added my own subclass of SwingWorker in case a SwingWorker had to be created in order for a progress monitor to exist. How can I make it show?
I am watching BrandonioProductions on youtube. His videos are pretty good, but he doesn't seem to get errors where I get them. Here is an example.
public class compareUnequal { public static void main(String[] args){ compareTwo(); } public static void compareTwo(){ String x = "david"; String y = "Notdavid"; if (!x.equals(y)){ System.out.println("Not equal"); } } }
It runs ok, but asked me to proceed when there is an error, but I can`t figure out where the error is!
We are asked to create a JDialog showing our database. I am able to show the database but i can't seem to position the heading panel, table and back button. My back button is also not showing up. Here is part of my code...
I am thinking of creating a quiz application and facing one problem.
On first question I don`t have to show previous button and on last question I don`t have to show next button.And for in between question I have to show both the buttons. . How can I do that in a JSP page.
Why is it not showing those months updated balance? I feel like I'm pretty close. I guess I should specify that this is supposed to calculate monthly interest for one account and quarterly interest for the other. This is what the output should look like.
I had to make a table showing different values for converting kg to lbs and I'm confused because when it compiles, some of the decimals show correctly and some of them show with several 0's added on with another number on the end. I've tried to do math.random, but I'm not sure how to tie it in with my program.
//1 kg = 2.2 lbs public class kg_to_lbs { public static void main(String[] args) { //not sure if values are needed.. int kg = 1; double lbs = 2.20; //Table title
Is it possible for a rectangle with dotted side be shown when dragging the mouse on a component?Just something like the one in the attachments, usually occurs in some graphics/pictures software.
This is right from a book I'm reading but it doesn't work. The problem is to write an application that lets you determine the integer value returned by the InputEvent method getModifiers() when you click your left, right, or middle mouse button on a JFrame.
This is the code copied directly from the book. What is missing:
import java.awt.event.InputEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import javax.swing.JFrame; public class JLeftOrRight {
