import java.util.*;
创新互联建站专注骨干网络服务器租用10年，服务更有保障！服务器租用，服务器托管 成都服务器租用，成都服务器托管，骨干网络带宽，享受低延迟，高速访问。灵活、实现低成本的共享或公网数据中心高速带宽的专属高性能服务器。
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import java.io.*;
class 商品 extends Panel
{String 代号,名称;int 库存;float 单价; br/商品(String 代号,String 名称,int 库存,float 单价) br/{this.代号=代号;this.名称=名称;this.库存=库存;this.单价=单价; br/}
}
class ShowWin extends JFrame implements ActionListener
{ Hashtable hashtable=null;
JTextField 代号文本框=new JTextField(),
名称文本框=new JTextField(),
库存文本框=new JTextField(),
单价文本框=new JTextField(),
查询文本框=new JTextField(),
查询信息文本框=new JTextField(),
删除文本框=new JTextField();
JButton b_add=new JButton("添加商品"),
b_del=new JButton("删除商品"),
b_xun=new JButton("查询商品"),
b_xiu=new JButton("修改商品"),
b_show=new JButton("显示商品清单");
JTextArea 显示区=new JTextArea(25,10);
ShowWin()
{super("仓库管理窗口"); br/hashtable=new Hashtable(); br/Container con=getContentPane(); br/JScrollPane pane=new JScrollPane(显示区); br/显示区.setEditable(false); br/JPanel save=new JPanel(); br/save.setLayout(new GridLayout(8,2)); br/save.add(new Label("输入代橘拍洞号:")); br/save.add(代号文本框); br/save.add(new Label("输入名称:")); br/save.add(名称文本框); br/save.add(new Label("输入库存:"));/pre /div div class="replenish min_margin" dl dt 补充： /dt dd save.add(库存文本框); br/save.add(new Label("输入单价:")); br/save.add(单价文本框); br/save.add(new Label("单击添加:")); 圆枯br/save.add(b_add); br/save.add(new Label("单击修改:")); br/save.add(b_xiu); br/save.add(new Label("输入查询代号:")); br/save.add(查询文本框); br/save.add(new Label("单击查询:")); 贺返br/save.add(b_xun); br/JPanel del=new JPanel(); br/del.setLayout(new GridLayout(2,2)); br/del.add(new Label("输入删除的代号:")); br/del.add(删除文本框); br/del.add(new Label("单击删除:")); br/del.add(b_del); br/JPanel show=new JPanel(); br/show.setLayout(new BorderLayout()); br/show.add(pane,BorderLayout.CENTER); br/show.add(b_show,BorderLayout.SOUTH); br/JSplitPane split_one,split_two; br/split_one=new JSplitPane(JSplitPane.VERTICAL_SPLIT,save,del); br/split_two=new br/JSplitPane(JSplitPane.HORIZONTAL_SPLIT,true,split_one,show); br/con.add(split_two,BorderLayout.CENTER); br/JPanel xun=new JPanel(); br/xun.add(new Label("所得信息:")); br/xun.add(查询信息文本框); br/xun.setLayout(new GridLayout(2,1)); br/con.add(xun,BorderLayout.SOUTH); br/b_add.addActionListener(this); /dd /dl dl dt 补充： /dt dd b_del.addActionListener(this); br/b_xun.addActionListener(this); br/b_xiu.addActionListener(this); br/b_show.addActionListener(this); br/}
public void actionPerformed(ActionEvent e)
{if(e.getSource()==b_add) br/{String daihao=null,mingcheng=null;int kucun=0;float danjia=0.0f; br/daihao=代号文本框.getText();mingcheng=名称文本框.getText(); br/kucun=Integer.parseInt(库存文本框.getText()); br/danjia=Float.valueOf(单价文本框.getText()).floatValue(); br/商品 goods=new 商品(daihao,mingcheng,kucun,danjia); br/hashtable.put(daihao,goods); br/try{FileOutputStream file=new FileOutputStream("goods.txt"); br/ObjectOutputStream out=new ObjectOutputStream(file); br/out.writeObject(hashtable); out.close(); br/}
catch(IOException event){}
}
else if(e.getSource()==b_del)
{String daihao1=删除文本框.getText(); br/try{FileInputStream come_in=new FileInputStream("goods.txt"); br/ObjectInputStream in=new ObjectInputStream(come_in); br/hashtable=(Hashtable)in.readObject(); ////// br/in.close(); br/} /dd /dl 补充： catch(ClassNotFoundException event){}
catch(IOException event){}
商品 temp=(商品)hashtable.get(daihao1);
{hashtable.remove(daihao1);}
try{FileOutputStream file=new FileOutputStream("goods.txt"); br/ObjectOutputStream out =new ObjectOutputStream(file); br/out.writeObject(hashtable);// br/out.close(); br/}
catch(IOException event){}
}
//
else if(e.getSource()==b_xun)
{ String aa;
aa=查询文本框.getText();
查询信息文本框.setText(null);
try{FileInputStream come_in=new FileInputStream("goods.txt"); br/ObjectInputStream in =new ObjectInputStream(come_in); br/hashtable=(Hashtable)in.readObject(); //// br/in.close(); br/}
catch(ClassNotFoundException event){}
catch(IOException event){}
商品 a=(商品)hashtable.get(aa);
查询信息文本框.setText(" 代号："+a.代号+" 名称："+a.名称+" 库存："+a.库存+" 单价："+a.单价);
}
//
else if(e.getSource()==b_xiu)
{ String bb;
bb=代号文本框.getText();
try{FileInputStream come_in=new FileInputStream("goods.txt"); br/ObjectInputStream in=new ObjectInputStream(come_in); /dd /dl dl dt 补充： /dt dd hashtable=(Hashtable)in.readObject(); ////// br/in.close(); br/}
catch(ClassNotFoundException event){}
catch(IOException event){}
商品 temp=(商品)hashtable.get(bb);
{hashtable.remove(bb);}
try{FileOutputStream file=new FileOutputStream("goods.txt"); br/ObjectOutputStream out =new ObjectOutputStream(file); br/out.writeObject(hashtable);// br/out.close(); br/}
catch(IOException event){}
String daihao1=null,mingcheng1=null;int kucun1=0;float danjia1=0.0f;
daihao1=代号文本框.getText();mingcheng1=名称文本框.getText();
kucun1=Integer.parseInt(库存文本框.getText());
danjia1=Float.valueOf(单价文本框.getText()).floatValue();
商品 goods1=new 商品(daihao1,mingcheng1,kucun1,danjia1);
hashtable.put(daihao1,goods1);
try{FileOutputStream file=new FileOutputStream("goods.txt"); br/ObjectOutputStream out=new ObjectOutputStream(file); br/out.writeObject(hashtable); out.close(); br/}
catch(IOException event){}
}
//
else if(e.getSource()==b_show)
{ 显示区.setText(null); 补充： try{FileInputStream come_in=new FileInputStream("goods.txt"); br/ObjectInputStream in =new ObjectInputStream(come_in); br/hashtable=(Hashtable)in.readObject(); //// br/}
catch(ClassNotFoundException event){}
catch(IOException event){}
Enumeration enum=hashtable.elements();
while(enum.hasMoreElements())
{ 商品 te=(商品)enum.nextElement();
显示区.append("商品代号:"+te.代号+" ");
显示区.append("商品名称:"+te.名称+" ");
显示区.append("商品库存:"+te.库存+" ");
显示区.append("商品单价:"+te.单价+" ");
显示区.append("\n ");
}
}
}
}
public class LinkListFour
{public static void main(String args[]) br/{ ShowWin win=new ShowWin(); br/win.setSize(400,350); br/win.setVisible(true); br/win.addWindowListener(new WindowAdapter() br/{public void windowClosing(WindowEvent e) br/{ System.exit(0);}});
}
}
终于完了！ 追问： 这里面应该没有涉及到功能吧？？ 回答： 你可以根据这个写出来呀！呵呵.