Databases
StackOverflow2013
Postsdbo
POJava TextArea Update On The Fly
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POJava TextArea Update On The Fly
    primarykey
    data
    text
    <p>I'm working on a program and I'm having problems with printing my results on the TextArea on the fly (similar as you can do with System.out.print("")) and need them to append on the text area. I want to use this as process steper window.<br /><br /> I have tried to call in new Thread and some other stuff, but no success. I'm really stuck here.<br /><br /> Any help would be really appreciated.</p> <p>Here is the example code. In the StdOut you can see when the code is executed, and at that time it should be also visible in TextArea but it appears on it when the method is complete. It should append the text on TextArea the same time as stdout is executed.</p> <hr> <pre><code>public class Start { public static void main(String[] args) { Manager.getInstance(); } } </code></pre> <hr> <pre><code>public class Manager { public static Manager instance; private MyFrame mainFrame; private Manager(){ mainFrame = MyFrame.newInstance(); mainFrame.setVisible(true); } public static Manager getInstance() { if(instance == null){ instance = new Manager(); } return instance; } public void startMethod() { for(int i = 0; i &lt; 5000; i++){ doSmething(); if(i == 0){ sendMsg("Start"); } } sendMsg("End"); } private void doSmething() { try{ Thread.sleep(1); } catch (InterruptedException e){ } } private void sendMsg(String str){ (new Thread(new MyFrameMsg(mainFrame,str))).start(); mainFrame.setTextArea(str); System.out.println(str); } } class MyFrameMsg implements Runnable{ private MyFrame mainFrame; private String str; public MyFrameMsg(MyFrame _mainComander, String _str) { mainFrame = _mainComander; str = _str; } @Override public void run() { System.out.println(str + " in thread"); mainFrame.setTextArea(str); } } </code></pre> <p><hr> Build with Netbeans</p> <pre><code>public class MyFrame extends javax.swing.JFrame { private static MyFrame instance; public MyFrame(){ initComponents(); instance = this; } public static MyFrame newInstance() { if(instance == null){ new MyFrame(); } return instance; } @SuppressWarnings("unchecked") // &lt;editor-fold defaultstate="collapsed" desc="Generated Code"&gt; private void initComponents() { jScrollPane1 = new javax.swing.JScrollPane(); textArea = new javax.swing.JTextArea(); startButton = new javax.swing.JButton(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); textArea.setEditable(false); textArea.setColumns(20); textArea.setRows(5); jScrollPane1.setViewportView(textArea); startButton.setText("Start"); startButton.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton1ActionPerformed(evt); } }); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addComponent(jScrollPane1) .addContainerGap()) .addGroup(layout.createSequentialGroup() .addGap(162, 162, 162) .addComponent(startButton) .addContainerGap(181, Short.MAX_VALUE)) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup() .addContainerGap(98, Short.MAX_VALUE) .addComponent(startButton) .addGap(39, 39, 39) .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 129, javax.swing.GroupLayout.PREFERRED_SIZE) .addContainerGap()) ); pack(); }// &lt;/editor-fold&gt; // Variables declaration - do not modify private javax.swing.JButton startButton; private javax.swing.JScrollPane jScrollPane1; private javax.swing.JTextArea textArea; // End of variables declaration private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { Manager.getInstance().startMethod(); } public void setTextArea(String str) { textArea.append(str + System.getProperty("line.separator")); } } </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USmKorbel
    1. US5er
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COYou're not calling the `setTextArea()` anywhere. is this the method that you can't get to perform? I'm not clear about your question.
      singulars
      1. POJava TextArea Update On The Fly
      1. USPaul Samsotha
    2. COpublic void setTextArea(String str) { textArea.append(str + System.getProperty("line.separator")); } }
      singulars
      1. POJava TextArea Update On The Fly
      1. US5er
    3. COWhat about it? I know the method. What is the problem with it?
      singulars
      1. POJava TextArea Update On The Fly
      1. USPaul Samsotha
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload