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POJava - Can't get getText in jTextArea to work properly
 

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  1. POJava - Can't get getText in jTextArea to work properly
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    <p>I have a seperate JFrame where there is a text box (jTextArea) that takes numbers as inputs, each separated with a new line. Upon closing the JFrame with the text box, the data is supposed to be stored in an ArrayList of integers. The ArrayList is checked when clicking a button in the main JFrame and errors are logged if they happen.</p> <p>The code for the JFrame with the jTextArea looks like this:</p> <pre><code>private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) { boolean success = false; try{ selectedTime = Long.parseLong(jTextField1.getText()); if(selectedTime &gt;= 10000){ success = true; if(!jTextArea1.equals("") &amp;&amp; !jTextArea1.equals(null)){ try{ for(int i = 0; i &lt; jTextArea1.getLineCount(); i++){ n = Integer.parseInt(jTextArea1.getText(jTextArea1.getLineStartOffset(i),jTextArea1.getLineEndOffset(i))); if(n &lt;= 172){ worldsChosen.add(n); } } }catch(Exception e){ errorsHappened = true; } } }else{ javax.swing.JOptionPane.showMessageDialog(null,"The specified time was not above or equal to 10000 ms. Please try again."); success = false; } }catch(Exception e){ javax.swing.JOptionPane.showMessageDialog(null,"The specified time was not set in numbers exclusively. Please try again."); success = false; } if(success){ gui.hideWorlds(); } } </code></pre> <p>Note: it also checks whether a text box has a number input equal to or above 10000 (this works).</p> <p>The code for the main JFrame:</p> <pre><code> if(jCheckBox5.isSelected()){ checkWorld = true; if(!worldsChosen.isEmpty()){ changeWorlds = true; }else{ log("You've selected the option for automatic world switching,"); log("but all of your inputs weren't formatted correctly."); errorsHappened = true; } }else{ errorsHappened = false; } if(errorsHappened == true){ log("One or multiple worlds weren't added due to incorrect formatting."); log("Retry to make script automatically change worlds."); } </code></pre> <p>Whenever I run the script with the check box selected and something formatted correctly in the text area (like this):</p> <pre><code>1 2 3 4 5 </code></pre> <p>etc.</p> <p>It outputs all of the log messages (as if the check box had been selected but none of the inputs were formatted correctly).</p> <p>I've tried to the best of my knowledge to fix this, but I just can't see how it messes up.</p> <p>Any help appreciated :).</p> <p>Mike Haye.</p>
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    1. PTQuestion
    1. USJörn Horstmann
    1. USMike Haye
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    1. CO"if(!jTextArea1.equals("") && !jTextArea1.equals(null))" : I suppose it is jTextArea1.getText() you want to test. Btw .equals(null) is an abomination, replace with ==null
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      1. POJava - Can't get getText in jTextArea to work properly
      1. USFriedrik
    2. CO`!jTextArea1.equals("") && !jTextArea1.equals(null)` would always be true (since JTextArea != String and jTextArea1 != null )
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      1. POJava - Can't get getText in jTextArea to work properly
      1. USThomas
 

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