one_record.java

个人财务管理的程序 很实用的

//***********************************************************
//建立处理保存数据的DataFile类
//***********************************************************
import java.io.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import javax.swing.table.*;

class One_record {
   public One_record(String d,String n,double am,String exp) {
      date=d;
      name=n;
      amount=am;
      explanation=exp;
   }
   public One_record() {}

   public String getDate() {
      return date;
   }   

   public String getName() {
      return name;
   }   

   public double getAmount() {
      return amount;
   }   

   public String getExp() {
      return explanation;
   }   

   public void writeData(DataOutput out) throws IOException {
      DataIO.writeFixedString(date,DATE_SIZE,out);//40
      DataIO.writeFixedString(name,NAME_SIZE,out);//40
      out.writeDouble(amount);//8
      DataIO.writeFixedString(explanation,EXP_SIZE,out);//80
   }

   public void readData(DataInput in) throws IOException {
      date=DataIO.readFixedString(DATE_SIZE,in);
      name=DataIO.readFixedString(NAME_SIZE,in);
      amount=in.readDouble();
      explanation=DataIO.readFixedString(EXP_SIZE,in);
   }

   public static final int DATE_SIZE=40;
   public static final int NAME_SIZE=40;
   public static final int EXP_SIZE=80;
   public static final int RECORD_SIZE
      =2*(DATE_SIZE+NAME_SIZE)+8+2*(EXP_SIZE);

   private String date;
   private String name;
   private double amount;
   private String explanation;
}