jbuilder里实现重置按钮怎么写代码

//关键代码：Java做图形很麻烦，很多东西都要自己手动写
public void jButton1_actionPerformed(ActionEvent e) {
txt1.setText("您好");//设置文本框2
txt2.setText("");//设置文本框1
RadMan.setSelected(true);//设置单选按钮
cnkRead.setSelected(true);//设置复选框
cbo1.setSelectedIndex(0);//设置下拉列表框
cnkRead.setSelected(false);//设置复选框
cnkSning.setSelected(false);//设置复选框
}
///////全部代码 Frame1.java
package untitled1;

import java.awt.BorderLayout;
import java.awt.Dimension;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import java.awt.*;
import javax.swing.JCheckBox;
import javax.swing.JRadioButton;
import javax.swing.JComboBox;
import javax.swing.JButton;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ButtonGroup;

public class Frame1 extends J