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  1. JDK
  2. JDK-8227295

JTextArea not painted in its actual state

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      Description

      ADDITIONAL SYSTEM INFORMATION :
      win10, java 1.8.211

      A DESCRIPTION OF THE PROBLEM :
      JTextarea text disappears when you erase the text in a JTextfield, both in the same Jpanel

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      1.) run the code
      2.) resize the window (not fullscreen)
      3.) hit send
      repeate:
          - clear the text
          - write some new text
          - resize the window(not fullscreen)
          - hit send


         





      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      when you earse the text in the JTextfield, the JTextarea should not be changed
      ACTUAL -
      last text you send to the JTextarea disapears

      ---------- BEGIN SOURCE ----------
      public class BugTester {

          public static void main(String[] args) {
              MainFrame frame = new MainFrame();
          }

          public static class MainFrame extends JFrame implements ActionListener {

              private JTextField textField;
              private JTextArea textArea;

              public MainFrame() throws HeadlessException {
                  super();
                  this.setSize(800, 800);
                  this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
                  this.setLocationRelativeTo(null);
                  init();
                  this.pack();
                  this.setVisible(true);

              }

              private void init() {

                  JPanel panel = new JPanel();
                  panel.setLayout(new GridLayout(3, 3));

                  textField = new JTextField("hello");
                  panel.add(textField);
                  panel.setSize(new Dimension(300, 300));
                  panel.setMinimumSize(new Dimension(300, 300));
                  panel.setMaximumSize(new Dimension(300, 300));


                  JButton button = new JButton("send");
                  button.setSize(100, 50);
                  button.addActionListener(this);
                  button.setActionCommand("send");
                  panel.add(button);

                  textArea = new JTextArea();
                  textArea.setSize(200, 200);
                  panel.add(textArea);

                  this.add(panel);
              }
              @Override
              public void actionPerformed(ActionEvent e) {

                  String command = e.getActionCommand();
                  if (command.equals("send")) {

                      String message = textField.getText();
                      textArea.append(message+ " ");
                  }

              }

          }
      }
      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      revalidate;
      repaint;

      FREQUENCY : often


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            • Assignee:
              pardesha Pardeep Sharma
              Reporter:
              webbuggrp Webbug Group
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              • Created:
                Updated:
                Resolved: