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POFinding and replacing nodes in a Linked List
 

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  1. POFinding and replacing nodes in a Linked List
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    <p>I need to be able to find and replace user information in a Linked List. I have been reading several tutorials and examples but it doesn't seem to work. The set method used for linked lists isn't working. So I am wondering if I am implementing it wrong or what. Any help would be great. Also just FYI my linked list is loaded from a file and basically its just user information with each element on a different line.</p> <p>i.e.</p> <pre><code> int index = account.indexOf(hobby); account.set(index, "New String"); </code></pre> <p>Code:</p> <pre><code>private void jButtonP1ActionPerformed(java.awt.event.ActionEvent evt) { LinkedList&lt;Account&gt; account = new LinkedList&lt;Account&gt;(); //user information String username = jTextFieldP3.getText(); String password = jPasswordFieldP1.getText(); String email = jTextFieldP4.getText(); String name = jTextFieldP1.getText(); String breed = (String) jComboBoxP4.getSelectedItem(); String gender = (String) jComboBoxP3.getSelectedItem(); String age = (String) jComboBoxP1.getSelectedItem(); String state = (String) jComboBoxP2.getSelectedItem(); String hobby = jTextFieldP2.getText(); //combo boxes String passchange = (String) jComboBoxP13.getSelectedItem(); String emailchange = (String) jComboBoxP14.getSelectedItem(); String namechange = (String) jComboBoxP6.getSelectedItem(); String breedchange = (String) jComboBoxP7.getSelectedItem(); String genderchange = (String) jComboBoxP8.getSelectedItem(); String agechange = (String) jComboBoxP9.getSelectedItem(); String statechange = (String) jComboBoxP10.getSelectedItem(); String hobbychange = (String) jComboBoxP11.getSelectedItem(); String accountcancel = (String) jComboBoxP5.getSelectedItem(); Account a = new Account(username, password, email, name, breed, gender, age, state, hobby); account.add(a); if(username.equals("") || password.equals("") || email.equals("")) // If password and username is empty &gt; Do this &gt;&gt;&gt; { jButtonP1.setEnabled(false); jTextFieldP3.setText(""); jPasswordFieldP1.setText(""); jTextFieldP4.setText(""); jButtonP1.setEnabled(true); this.setVisible(true); } else if(a.onList(username) || a.onList(password) || a.onList(email)) { int index = account.indexOf(hobby); account.set(index, "New String"); } else { } } </code></pre>
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    1. USGeorge KingoftheZombies Speach
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