调试当前指令指针[eclipse]

Question

我正在完成这个小任务，用一个字段和一个按钮创建一个gui。没什么难，但我不能运行该程序。 Eclipse一直告诉我在第18行调试当前指令指针“public static void main ..”

import java.awt.*;
import javax.swing.*;


public class Test extends JFrame implements ActionListener{
    private JPanel panou;

    private JButton schimba;

    private JTextField field;

    public Test(String _z) {
        super(_z);
        initComponents();
        pack();
        setVisible(true);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
    }

    public static void main(String[] _args){
        Test _frame = new Test("andreiterecoasa");
    }

    private void initComponents(){
        setLayout(new FlowLayout());

        panou = new JPanel(new FlowLayout());
        schimba = new JButton("Schimba");
        field = new JTextField(30);

        panou.add(schimba);
        panou.add(field);
        add(panou);

        schimba.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e) {
                String a = field.getText();
                Cuvant z = new Cuvant(a);
                field.setText(z.intoarce());
            }
        });
    }




}

知道问题是什么？