关于一个查询的JAVA界面，希望对你有启发

package work2;

import java.awt.BorderLayout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.WindowConstants;

class MyJframe extends JFrame{
        JPanel Panel;
        JLabel ID,Name,Price,Birth;
        JTextField J1;
        JTextArea J2,J3,J4;
        JButton button1,button2;
        
        public MyJframe (){
            setLayout(new BorderLayout());
            init();
            setTitle("查询窗口");
            setBounds(700,400,600,350);
            setVisible(true);
            setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        }
        public void init(){
            Panel=new JPanel();
            Panel.setLayout(null);//把面板布局设置为空
            
            //商品编号及文本框
            ID=new JLabel("商品编号:");
            ID.setBounds(120,30,150,50);
            J1=new JTextField(16); 
            J1.setBounds(200, 45, 250, 20);
            Panel.add(ID);
            Panel.add(J1);
            
            //查询按钮
            button1=new JButton("查询");
            button1.setBounds(130,80,90,20);
            Panel.add(button1);
            
            //清除按钮
            button2=new JButton("清除界面字符");
            button2.setBounds(320,80,120,20);
            Panel.add(button2);
            
            //添加商品名称
            Name=new JLabel("商品名称:");
            Name.setBounds(120,115,120,30);
            J2=new JTextArea();
            J2.setBounds(200,120,250,20);
            Panel.add(Name);
            Panel.add(J2);
            
            //添加价格信息
            Price=new JLabel("价       格:");
            Price.setBounds(120,156,120,30);
            J3=new JTextArea();
            J3.setBounds(200,160,250,20);
            Panel.add(Price);
            Panel.add(J3);
            
            //添加出厂日期
            Birth=new JLabel("出厂日期:");
            Birth.setBounds(120,192,120,30);
            J4=new JTextArea();
            J4.setBounds(200,195,250,20);
            Panel.add(Birth);
            Panel.add(J4);
            
            add(Panel);
        }
}
public class Interface{
    public static void main(String[] args){
            new MyJframe();
        }
    }