[Demonstration 1]

[Buggy Method]
public void focusGained(FocusEvent evt) {
    JComboBox cb = (JComboBox) evt.getSource();
    if (cb.isEditable()) {
        Component editor = cb.getEditor().getEditorComponent();
        if (editor != null) {
            editor.requestFocus();
        }
    }
}

[Buggy Hunk]
JComboBox cb = (JComboBox) evt.getSource();

[Patch]
JComboBox<String> cb = (JComboBox) evt.getSource();

[Demonstration 2]

[Buggy Method]
public void initHumanPanel() {
    JComboBox choices = new JComboBox();
    select = new JButton("Submit");
    humanFrame = new JFrame();
    humanPanel = new JPanel();
    humanFrame.setVisible(true);
    humanFrame.setTitle("Human Player");
    humanPanel.setSize(300, 300);
    humanFrame.setSize(320, 320);
    humanPanel.setAlignmentY(TOP_ALIGNMENT);
    humanPanel.setAlignmentX(RIGHT_ALIGNMENT);
    humanFrame.add(humanPanel);
    humanPanel.add(choices);
    humanPanel.add(select);
    try //try to get system look for gui interface
    {
        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
    } catch (//error exception
    Exception ex) {
        ex.printStackTrace();
    }
}

[Buggy Hunk]
JComboBox choices = new JComboBox();

[Patch]
choices = new JComboBox<String>();

[Demonstration 3]

[Buggy Method]
@Override
public void onBindViewHolder(TagRadioChoiceHolder holder, TagItem tagItem) {
    // Save holder
    this.content = holder.getContent();
    this.tagItem = tagItem;
    // Set key text view
    holder.getTextViewKey().setText(ParserManager.parseTagName(tagItem.getKey()));
    if (!tagItem.isShow()) {
        ((RelativeLayout) holder.getContent().getParent()).setVisibility(View.INVISIBLE);
    }
    // Check if size of possible values are 3, means special action to organize layout
    List<String> values = tagItem.getValues();
    boolean isFourElements = values.size() == 3;
    // List of radio buttons without undefined. Undefined is always showing
    RadioButton[] radioButtons = holder.getRadioButtons();
    // Access element for values
    int pos = 0;
    for (int i = 0; i < radioButtons.length; i++) {
        if (!values.isEmpty()) {
            // If values is not empty...
            if (isFourElements && i == 1) {
                // ... and list contains four values, skip one radio to have a 2/2 side by side printing
                radioButtons[i].setVisibility(View.INVISIBLE);
                i++;
                isFourElements = false;
            }
            if (pos < values.size()) {
                // Set value of radio button and show it
                radioButtons[i].setText(values.get(pos));
                radioButtons[i].setVisibility(View.VISIBLE);
                // Select radio if value is not undefined
                if (tagItem.getValue() != null && tagItem.getValue().equals(values.get(pos))) {
                    holder.getUndefinedRadioButton().setChecked(false);
                    radioButtons[i].setChecked(true);
                }
                pos++;
            } else {
                // If all values are set, hide radio button not used
                radioButtons[i].setVisibility(View.INVISIBLE);
            }
        }
    }
    showValidation();
}

[Buggy Hunk]
((RelativeLayout) holder.getContent().getParent()).setVisibility(View.INVISIBLE);

[Patch]
((RelativeLayout) holder.getContent().getParent()).setVisibility(View.GONE);