Constructing a java table from a vector as parameter

Question

Hello! I’m having trouble constructing a table. Here’s the thing, the user defines a series of variables that are stored in an array. I would like the variables stored in this vector to constitute the name of the table columns. The problem does not involve sql, but variables passed through a java interface built by neatbeans. Thanks in advance.

a string vector (called column) is used with the function Concatena vector, which takes two arraysLists and stores in a third. Then go to the result arrayList. the values of the result arraylist is passed to the vector string str, returning its value to the variable column.

It follows below the Code:

Arrays declaration:

public ArrayList<String> colInput = new ArrayList<String>();
public ArrayList<String> colOutput = new ArrayList<String>();

Storage in the arrays:

private void jButton1AddInputActionPerformed(java.awt.event.ActionEvent evt) {                                                 
       // TODO add your handling code here:
       int i = jList4.getSelectedIndex();
       if (i == -1) {
         JFrame frame = new JFrame("Warning");
         JOptionPane.showMessageDialog(frame, palavras.getString("Please, select a variable"));
       } else {
         tipoBotao = INICIAL;
         String aux = Table.getVars().get(i).toString();
         colInput.add(aux); 
         //System.out.println(colInput.get(j)); j++;
         pressionarVariavelInput(aux);
         escreverInput();
         //escreverFormula();
     }
 } 


 private void jButton2AddOutputActionPerformed(java.awt.event.ActionEvent evt) {                                                  
       // TODO add your handling code here:
       int i = jList4.getSelectedIndex();
       if (i == -1) {
           JFrame frame = new JFrame("Warning");
           JOptionPane.showMessageDialog(frame, palavras.getString("Please, select a variable"));
       } else {
           tipoBotao = INICIAL;
           String aux = Table.getVars().get(i).toString();
           colOutput.add(aux);
           //System.out.println(colOutput.get(k));k++;
           pressionarVariavelOutput(aux);
           escreverOutput();
           //escreverFormula();
       }
   }       

Table call:

String[] coluna = this.ConcatenaVetor(colInput, colOutput);
Object dados[][]= new Object[][]{};       
jTable2 = new javax.swing.JTable(dados, coluna);
jScrollPane7.setViewportView(jTable2);

Function Concatenate vector:

String[] ConcatenaVetor(ArrayList colInput, ArrayList colOutput){
   int tam = colInput.size() + colOutput.size();
    ArrayList<String> resultado = new ArrayList<String>();
    resultado.addAll(colInput);
    resultado.addAll(colOutput);
    String[] str= new String[10];
    for(int i = 0; i < colInput.size(); i++){   
        str[i] = resultado.get(i);  
     }
    return str;

 }