I can’t program a jFrame button

Question

Every time I double-click the button to open Actionperformed from it, Netbeans creates it in the middle of another button’s Actionperformade. Original code:

 private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    // TODO add your handling code here:
    if(jTable.getSelectedRow()>-1){
    jComboBox1.removeAllItems();
    suamae.forEach((nana) -> {
        jComboBox1.addItem(nana);
    });

    
   String[] isso = new String[4];
   for(int sim =0; sim<4;sim++){
   isso[sim]=jTable.getValueAt(jTable.getSelectedRow(),sim).toString();
   
   }
   jTextField1.setText(isso[0]);
   jComboBox2.setSelectedItem(isso[1]);
   jComboBox1.setSelectedItem(isso[2]);
   
   jPanel1.setVisible(true);
          
}                                        
else{
        JOptionPane.showMessageDialog(this, "Você não cadastrou animais");
    }}

After double-clicking on the new button to change your code:

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    // TODO add your handling code here:
    if(jTable.getSelectedRow()>-1){
    jComboBox1.removeAllItems();
    suamae.forEach((nana) -> {
        jComboBox1.addItem(nana);
    });

    
   String[] isso = new String[4];
   for(int sim =0; sim<4;sim++){
   isso[sim]=jTable.getValueAt(jTable.getSelectedRow(),sim).toString();
   
   }
   jTextField1.setText(isso[0]);
   jComboBox2.setSelectedItem(isso[1]);
   jComboBox1.setSelectedItem(isso[2]);
   
   jPanel1.setVisible(true);
          
}                                        

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    // TODO add your handling code here:
}                                        
else{
        JOptionPane.showMessageDialog(this, "Você não cadastrou animais");
    }}

I tried to change the button name, restart the netbeans, take Else out and put it back in place, but nothing was right. All the error code after doing this.

Someone knows what I can do?

Do not call the name of the kkkkk variables