java简单的页面制作

 package 界面;
 import java.awt.*;

 import javax.swing.JFrame;
 import javax.swing.*;
 //import javax.swing.table.*;

 public class DMGL_Interface extends JFrame{

     //定义 按钮和标签
         JLabel L_Header,L_Language,L_Type,L_Title;
         JComboBox  Language,Type;
         JTextField Title;
         JTextArea Code;
         JButton Confirm,Cancle;

     public DMGL_Interface ()
     {

         //布局
         Container contentPane = getContentPane();//定义容器类对象
         setLayout(new FlowLayout());//不设置布局
         setTitle("添加代码");
         //语言框
         JPanel P_Header=new JPanel();
         String [] SLanguage=new String[]{"默认","java","javaScript","c",
                 "c++","c#","PHP","Delphi","SAS","PL/SQ","web","ABAP"};
         L_Header =new JLabel("语言");
         Language=new JComboBox(SLanguage);

         P_Header.add(L_Header);
         P_Header.add(Language);

         //类型框
         L_Type =new JLabel("类型");
         String [] SType=new String[]{"默认","函数","知识","模块","程序",};
         Type=new JComboBox(SType);

         P_Header.add(L_Type);
         P_Header.add(Type);
         add(P_Header);
         //标题框
         JPanel P_Title=new JPanel();
         L_Title =new JLabel("请输入标题");
         Title =new JTextField("",20);
         P_Title.add(L_Title);
         P_Title.add(Title);
         add(P_Title);
         //文本域
         Code = new JTextArea("",20,32);
         JScrollPane G_Code = new JScrollPane(Code,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
         add(G_Code);

         //按钮
         JPanel P_Button=new JPanel();
         Confirm=new JButton("保存");
         Cancle=new JButton("取消");
         P_Button.add(Confirm);
         P_Button.add(Cancle);
         add(P_Button);
         //设置窗口可见话和大小
         setSize(400,550);
         setVisible(true);
     }

     //主函数
     public static void main(String args[])
 {
     new DMGL_Interface();
 }

 }