小编Sou*_*ish的帖子

我TextField在使用setText()方法清除AWT中的内容时遇到问题.显然,setText("")没有清除TextField按下"重置"按钮的内容.这是我的计划:

import java.awt.*;
import java.awt.event.*;

public class form extends Frame
{

    Label lbl = new Label("Name:");
    TextField tf = new TextField();
    Button btn = new Button("Reset");

    public form()
    {
        tf.setColumns(20);

        addWindowListener(new WindowAdapter()
        {
            public void windowClosing(WindowEvent e)
            {
                System.exit(0);
            }
        });


        btn.addActionListener(new ActionListener() 
        {
            public void actionPerformed(ActionEvent e) 
            {
               tf.setText("");  //Problem occurs here. This does not clear the contents of the text field on pressing the 'Reset' button.

            }
        });


        add(lbl);
        add(tf); …