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POHow can I enable a text field when a button is clicked?
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copied!<p>before I start, I'm a beginner programmer.</p> <p>How can I enable a text field when a button is clicked.</p> <p>I have two frames, one that has the JFields and the other for the exception. When the exception occurs > <strong>setEditable(false)</strong> but what statement should I make to enable the JFields once the user click on okay button -that i've made in the exception-? </p> <p>I've tried to add static boolean to exception frame, and inside the action performed of this class I initialized that boolean to <strong>true</strong>. </p> <p>in the other class, I added an if statment, if that boolean is true, then setEditable(true)</p> <p>-========- The point of this program, that when the exception occurs the user cannot enter anything in the fields until he closes the exception window.</p> <p>I wish you'd help me.</p> <p>With all love, programmers. </p> <p><strong>The code of action performed for THE EXCEPTION WINDOW FRAME ( having Okay button. )</strong></p> <pre><code> public void actionPerformed(ActionEvent e){ { allow=true; //static boolean Container TheFrame = OKButton.getParent(); do TheFrame = TheFrame.getParent(); while (!(TheFrame instanceof JFrame)); ((JFrame) TheFrame).dispose(); } </code></pre> <p><strong>The code of action performed for THE MAIN PROGRAM (having three fields, an exception will occur once the user enters non digits )</strong> I added some comments to clarify.</p> <pre><code> public void actionPerformed(ActionEvent event) { try{ r =Double.parseDouble(RField.getText()); s=Double.parseDouble(SField.getText()); h=Double.parseDouble(HField.getText()); Cone C = new Cone(r,s,h);//class cone if (event.getSource() instanceof JButton) { JButton clickedButton = (JButton) event.getSource(); if (clickedButton == VolumeButton) { Result.append("VOLUME = "+C.volume()+ "\n"); ifV= true;//this's for clearing the fields for new entries. } if (clickedButton == AreaButton) { Result.append("SURFACE AREA = "+C.surfaceArea()+ "\n"); ifA= true;//this's for clearing the fields for new entries. } if(ifA&&ifV){ // clearing the fields for new entries. SField.setText(CLEAR); HField.setText(CLEAR); RField.setText(CLEAR); ifV=false; ifA= false;} } SList.addShape(C); } catch(NumberFormatException e){ //Object of type "Exception__" already created Ex.setVisible(true);//class "Exception__" is the one i've made for Exception window SField.setText(CLEAR); HField.setText(CLEAR); RField.setText(CLEAR); SField.setEditable(false); HField.setEditable(false); RField.setEditable(false); }/*here, if the user clicked on -that okay in Exception window- and variable allow initialized to "true" those statements should extend. I guess? - everything worked correctly except for this ?*/ if(Ex.allow){ SField.setEditable(true); HField.setEditable(true); RField.setEditable(true); } } </code></pre> <p><strong>THANK YOU ALL IT FINALLY WORKED.</strong> </p> <p>I added </p> <pre><code>Ex.allow(SField,HField,RField); </code></pre> <p>to the catch. </p> <p>and added this method in class Exception__:</p> <pre><code> public void allow(JTextField js,JTextField jh,JTextField jr){ HField =jh; SField =js; RField =jr; } </code></pre> <p>finally, to the action performed of class Exception__: </p> <pre><code> SField.setEditable(true); HField.setEditable(true); RField.setEditable(true); </code></pre> <p>WOHOOOO. It feels so awesome lol. Thanks all. should I delete my question or leave it for others who might face the same problem as mine? :P</p>

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