jscrollpane

I have a JScrollPane and a JTextArea (editable) with 10 rows. I want the first user input to appear at the bottom of the JTextArea and the most recent input should push the previous input upward. To achieve this I use textArea.setMargin(new Insets(x,0,0,0)); and everything works as it should - except that my second input will toggle the JScrollPane . How can I start at the bottom of the JTextArea and only enable scrolling when the entire original viewport is filled? Basically, you could add the JTextText onto a JPanel with another JPanel which acts a filler, causing the JTextArea to occupy the

I have done the Google search and tried implementing a number of different solutions concerning the JTable and JScrollPane. The following is a self contained example of the problem I am having. I want to be able to have a horizontal scroll bar with these tables. Your assistance would be deeply appreciated: package org.examples; import java.awt.EventQueue; import java.awt.Frame; import java.awt.Rectangle; import java.util.ArrayList; import java.util.List; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.JViewport; import javax.swing

I want the table with the same width as the frame and also when I resize the frame the table need to be resized too. I think setSize() of JTable doesn't work correctly. Can you help me? import java.awt.Color; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.SwingUtilities; public class Main extends JFrame { public Main() { setSize(400, 600); String[] columnNames = {"A", "B", "C"}; Object[][] data = { {"Moni", "adsad", 2}, {"Jhon", "ewrewr", 4}, {"Max", "zxczxc", 6} }; JTable table = new JTable(data, columnNames)

The code that I have here is using a MouseAdapter to listen for the user to "draw" a box around the area of an image that they would like to zoom in on and calculate the ratio of the box to the image. It then resizes the image to the calculated ratio. This part works. The issue that I am having is making the JScrollPane view appear as if it is still at the same top left position after the image has been resized. I have tried several methods that seem to have gotten close to the result I want but not exactly. This is the Listener that finds the scale ratio and sets the position: import java.awt

I'm trying to add line numbers to a JTextArea and am having some difficulties. The line numbers appear, but they do not scroll properly. I have a linked-list of a custom class that stores a line of data (log message) and a line number associated with it as well as visibility on whether it should be shown in the text area or not. So what I did was create two JTextAreas... one to store the logs, and the other to store the line numbers. The layout works and the line numbers populate correctly with the logs. The problem is when I try to scroll up or down. The logs adjust properly as you scroll,

I have JTextArea text and JScrollPane pane=new JScrollPane(text), I put pane.setAutoScrolls(true). How to get that when I append some text to my component text that pane scrolls at the end ( last line ) ? mKorbel follows link from this thread ScrollPane scroll to bottom problem Best (and up-to-date, as far as I can tell) explanation of how caret is moved, by Rob Camick: http://tips4java.wordpress.com/2008/10/22/text-area-scrolling/ Is it possible, that you are not on the EDT? If the append does not happen on the EDT, the position of the JTextArea does not update. Short, runnable example to