I have a java program which would display a message dialog box. The problem is it would stopped working before even displaying the message dialog box. This is my code.
import javax.swing.JOptionPane; public class HelloDialog { public static void main(String [] args) { JOptionPane.showMessageDialog(null, "Hello World!"); } }
There is a pop-up window which would say "Java(TM) Platform SE binary has stopped working." I am using textpad. What should I do with this?
If you print (eg a JTable) from Java/Swing and choose "Adobe PDF" as the printer, you get an Acrobat file. But the PDF isn't searchable because the text has already been rendered by Java before Adobe PDF gets to see it. Is there a way to make printing use a more high-level interface to the printer driver so that the text is left intact?
I've visited this great site been following this java tutorial on making the snake game, and as I followed along at added the second player. Right up to the point I got into the resetting if I hit borders or myself or the other player, the snakes stopped moving when i tried hitting keys...problem started up to the point where I added snake2 in the GenerateDefaultSnake method
This problem is from Java . It asks me to convert a binary number in to decimal. How to program this in java? I am not able to find an effective algorithm to convert in to Java.
I am facing NoClassDefFoundError with one of the java standard platform class (java.text.DigitList$1)
java.text.DigitList class is part of rt.jar so it should not create any issue as such.
I am using Java 1.6.0_06
StackTrace: Unhandled exception java.lang.NoClassDefFoundError: java/text/DigitList$1 at java.text.DigitList.shouldRoundUp(DigitList.java:4 11) at java.text.DigitList.round(DigitList.java:363) at java.text.DigitList.set(DigitList.java:351) at java.text.DigitList.set(DigitList.java:272) at java.text.DecimalFormat.format(DecimalFormat.java: 584) at java.text.DecimalFormat.format(DecimalFormat.java: 507) at java.text.NumberFormat.format(NumberFormat.java:26 9)
i have problem in what comes to jumping because in what i have now mario jumps with the key lsitener, key pressed up arrow and it jumps smooth but when im trying to make it fall down he appears immediatly at ground and it doesnt simulate the fall as it should be.
The other problem is that i dont really know how to detect collisions if there is a method that makes easier this proceso and how to make the map to continue and repeat so mario could continue walking,
I'm having a small problem when attempting to print out a table using the JTable.print() method where it always seems to default to printing in portrait. I can change this in the print dialogue however I would much prefer if I could change this programmatically. I wont post the whole program as there is a lot of code(800+ lines) but here's the print method.
I need to print to 2 decimal places and I'm trying to use the printf method, but for some reason I keep getting an error. I've looked through my code, but unless I'm missing a small detail, it looks okay to me.
I have a jTable with two columns and in the second Column I would like to have 2 different cell-renderer. One is String and the other one is boolean. The data is always from type Object[][]. I have written an own renderer:
Java Code:
@Override public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { if(column == 2 && row > 2){ return super.getTableCellRendererComponent(table, (boolean)value, isSelected, hasFocus, row, column); } return super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column); //To change body of generated methods, choose Tools | Templates. } mh_sh_highlight_all('java');
So the problem is, that my JTable will always renderer to String. I thought when i write "(boolean)" before "value" (in my IF-Statement), he returns the boolean cell renderer. But it isn't doing that.
How can I return a boolean-renderer in my column 2 with all rows higher than 2 ?
The JTable that I'm using in my program fetches its value from the database. Now one of the fields contain the link item. I basically want it to be clickable so that once the user clicks on this link then he is directed to the desired webpage. I've tried to implement this in my code but somehow nothing seems to work.
Java Code:
public class JTableButtonMouseListener extends MouseAdapter { private final JTable table; public JTableButtonMouseListener(JTable table) { this.table = table;
Object in my main class, it doesn't work as its supposed to. I might be implementing it wrong.
Java Code:
public PostOrderIterator<E> implements Iterator<E>{ Deque<BNode<E>> somestack = new LinkedList<BNode<E>>(); BNode<E> position; public POIterator(BNode<E>root){ somestack = new LinkedList<BNode<E>>(); somestack.push(root);}
I'm making a project about school management system , i have a jframe to set marks and inside the jframe i have a jtable which is connected to sql database , in the jframe I have a JCombobox with 6 different subjects and in my database i have created 6 tables for the subjects and if any of the subjects are clicked then the jTable will connect to database and change the table to that subject , after it is changed if you double click on any row and insert a value then it will automatically update the table in the database , but my problem is that if I select the first option from the jcombox which is English and edit the values then it works fine , but if I select any other option e.g Math or Science , then I try to edit the table then it edits the English table , I commented the English option in the code to see what happens and I saw that it edits only the first option and if you try to change the subjects and edit than it edits the first subject in the combobox , so how can I solve this ?
I was tasked with building a program that counts vowels in a phrase or word. I have this working properly, but the problem arises in the next situation. Here is my code:
Scanner userInput = new Scanner(System.in); int userDecision; String Choice; String Phrase; int vowelCount = 0; System.out.println(" This program will count the number of vowels in it.
[Code] ....
As you can see, I used a 'for' statement to declare how long the program should run. However, I need the user to be able to say when it ends. For example, at the end of the program it must say "There are ______ number of vowels in your word. Please press '1' to run the program again, or any other number to exit."
I understand a do-while loop is needed here, but every time I try and create an adequate loop with no logic errors, I either break my existing code, or the program does not work correctly.
Basically, my question is, what is the best way to perform this task? Is a do-while loop necessary, or is there a better way?
I am trying to build a binary game. I have six buttons. What I need to do is when I click on each button, the number needs to be changed from 0 to 1 and from 1 to 0 back again. However, I cannot do it wiht the below code. In addition, I would like to buttons on the GUI to be laid horizontally as well.
public class BinaryGame extends JFrame implements ActionListener { private JFrame binaryGameFrame; private JLabel StartLabel; private JPanel controlPanel; private JFrame guiBinaryGameFrame; private Object firstButton; private int numClicks=0;
It's an RMI program that has to be able to return the mean, mode and median of a set of numbers.It's composed of 4 classes; a client, an implementation class (with the math), an Interface, and a server class.
My JTable has a row, row number 0, which I always want to be at the top.I tried the following two approaches, both without success:
1- Use a custom table cell renderer for the header, and create a header of two rows. the second row is my JTextField.
Problem: I cannot get the JTextField to function properly. (I've seen examples with a checkbox in the header, but that one just reacts to a click somewhere on the header, my textfield must be editable).
2- Use the first row of the table. This works quite nice. However, I must prevent row 0 to be re-ordered when sorting the table.
I was thinking to add a prefix (either something like "___" or "zzz" depending on current sorting mode), but I do not know which methods to adjust for this exaclty.
Another approach would be to have N textfields above the JTable in some layout (or two JTable's on top of each other).
However, Then I would need to react to the re-ordering and re-sizing of all columns as well, which does not seem easy to me.
I have encountered a very tricky spot in a project that i am working on. I must have a JTable to programmatically select the very last row in an AbstractTableModel. I have tried every thing but nothing works so far.
The problem is is that the JTable only scrolls down to the second last table row in the model? What am i missing?
//Show the very last row in a tablemodel object using the method updateTableRows //after an "insert action event" occurred public void updateViewMode(String name, java.util.List<NetworkSwitch> list, boolean flag) { CableTableModel model = cableTable.getCableModel();
[code]....
What happens is that the only row that gets selected is the second last row of the total rows iny AbstractTableModel object, "CableTableModel"
I am preparing a small solution. Below is how the functionality works.
1. Login Screen 2. Successful Login will take to a MDI Form 3. Click the menu, a JInternalFrame will open in the JDestopPane. 4. JInternalFrame has a JTable. 5. JInternalFrame has a JButton available for adding new data. 6. When JButton is clicked, a new JInternalFrame is popped up with some JTextField and JButton to save the data. 7. After saving the data (after insert query), a JDialog is opened to upload Logo (update query for BLOB), There are two buttons in the JDialog, one is for uploading the image, another one is uploading it later. 8. The logo is displayed in the JDialog and if the JButton, for upload is pressed, update the database and reload the JTable in the JInternalFrame is called.
My challenge is in point 8. The function is called properly, but the table is not getting refreshed.
JButton in JDialog for uploading the Logo private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: JOptionPane.showMessageDialog(this, "Image Uploaded Successfully"); companyConfig cc = new companyConfig(); //cc.reloadTable(); cc.updateTable(); this.dispose();
I've been creating a jTable where I can add / edit /delete new entries. Now i have 2 Questions :
1) My column 0 is filled with the row-number. I created a variable and with each "add" it adds +1 to the variable. That works, but as soon as i delete 1 row there is a gap ( 1..2..4..5..).
My question: Is there another way then mine to handle this?
2) The table is/should be working as some kind of database. The user is able to add Information (height, width,...). Now I want to sum the entries of 1 column (length,...). But as they´re objects I didn´t find a way.
My question: How can I sum the entries of 1 column of a table?
I created a simple java game in which i have to keep the ball up with a platform, similar to the game brick breaker. Everything works great. I am using keyListener to move the platform left and right. My only problems is that I am unable to keep the platform in bounds of the applet window. I know Its something to do with my logic in the update method of my Platform class but I'm stumped. Here are the 3 classes:
I am trying to get the data entered in a JTextField into a JTable but not clear on how. The LeftPanel is where the button is located and the RightPanel is where the JTable is. I want the actionPerformed to update the row of the JTable but I can't figure out how. There is another class that controls the GUI but did not think it was necessary to include. Also, I am aware that I am getting an error at the addRow line, can't seem to alleviate it.
public class LeftPanel extends JPanel {
private static final long serialVersionUID = -2311952438693382407L; private RightPanel rPanel; public LeftPanel(){ Dimension size = getPreferredSize(); size.width = 250; setPreferredSize(size);
