Reading and writing text filesIn JDK 7, the most important classes for text files are: â– Paths and Path - file locations/names, but not their content. â– Files - operations on file content. â– StandardCharsets and Charset (an older class), for encodings of text files. â– the File.toPath method, whi…[ More ]
JTextArea append() not working? import java.awt.*; Â import java.awt.event.*; Â import javax.swing.*; Â import java.io.*; Â Â Â public class LevelEditor implements ActionListener { Â File input; Â File output; Â Â Â FileReader in; Â Â Â JFileChooser fc = new JFileChooser(); Â Â Â String newline = "/n"; Â Â Â J…[ More ]
How do I append text to JTextArea?package org.kodejava.example.swing;import javax.swing.*;import java.awt.*;public class TextAreaAppendText extends JPanel {Â Â public TextAreaAppendText() {Â Â Â Â initializeUI();Â Â }Â Â private void initializeUI() {Â Â Â Â String text = "The quick brown fox ";Â Â Â …[ More ]
Drawing a line to JFrame??? import java.util.*;import java.io.*;import javax.swing.JFrame;import javax.swing.JPanel;import java.awt.*;public class Operation {public static void main(String args[]){DrawPanel panel = new DrawPanel();JFrame frame = new JFrame("Voronoi Diagram");frame.setDefaultCloseOpe…[ More ]
Adding new row to existing Swing JTableIs there an easy(ish) way to add an additional row to an existingJTable's data?I see that you can create a model of the table data using the-TableModeldataModel = theTable.getModel();ButTableModelhas no 'insertRow()' method.I also see thatDefaultTableModelhas t…[ More ]
database ResultSet into JTable"select test_column from table_test " execution.table_test is the only table of database 'test' which i have created in NetBeans 7.0.1.test_column is the only column.class 'MySQLTest' creates the gui for login , connects with the database , and finally put the results i…[ More ]
getting value from JTableimport java.awt.BorderLayout;  import java.awt.event.MouseAdapter;  import java.awt.event.MouseEvent;    import javax.swing.JFrame;  import javax.swing.JScrollPane;  import javax.swing.JTable;  import javax.swing.JTextField;     public class TableSelection  {  private JFr…[ More ]
how to get the values from selected row of JTableimport java.awt.*;  import java.awt.event.*;  import javax.swing.*;  import javax.swing.event.*;  import javax.swing.table.*;    public class ReadingARow  {   JTable table;   JLabel label;     public ReadingARow()   {   String[] headers = { "co…[ More ]
How to add row in JTable?TheTableModelbehind the JTable handles all of the data behind the table. In order to add and remove rows from a table, you need to use aDefaultTableModelTo create the table with this model:JTable table =newJTable(newDefaultTableModel(newObject[]{"Column1","Column2"}));…[ More ]
How to add rows to JTable with AbstractTableModel method?import java.awt.Container;import java.awt.event.ActionEvent;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JScrollPane;import javax.swing.JTable;imp…[ More ]
How to get cell value of jtable depending on which row is clickedprivate final UrTableModel urTableModel;private JTable urTable;...// 1. create your table model class that should extends from DefaultTableModel, instatiate iturTableModel=new UrTableModel();// 2. creates tabletable = TableUtils.create…[ More ]
Transferring data from Database to JTable [duplicate]import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.JScrollPane;import javax.swing.JTable;import java.awt.Dimension;import java.awt.GridLayout;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;import java.sql.C…[ More ]
How to get the selected cells in JTable component?package com.javacoderanch.example.swing;import javax.swing.*;import javax.swing.event.ListSelectionEvent;import javax.swing.event.ListSelectionListener;import javax.swing.table.AbstractTableModel;import java.awt.*;import java.awt.event.ActionEvent;im…[ More ]
Validating value objectsIn a business process, you often have attributes that must not be null and other attributes that could be optional. In the case of attributes that must be an instance, you have to implement a check similar to this:if( attribute1 == null ){Â throw new Attribute1IsNullException…[ More ]
Validation of JTextField for only character/ number/datewe are able to validate and display the error message perfectly to the user, but what happens is if there is a error the message box comes up for atleast five time or so and then only he is able to enter. We are pasting the code below pls have …[ More ]
Validation using the builder patternpublic class PersonValidator {private static final int MAX_SEQUENCE = 20;private final List exceptions;private PersonValidator(final Validator validator) {exceptions = new ArrayList(validator.exceptionsOccured);}public boolean hasException() {return exceptions.isE…[ More ]
Developing a server-side push application using JavaThis topic shows you how to create a push request in the PAP push format or the BlackBerry push format. You can also look at the sample server-side application to see how to send a push request to a BlackBerry Java Application or a BlackBerry WebWo…[ More ]
