098y - 経済統計練習帳

package mix;
 
 
public class pro {
 
              int creditnumber;
String[] creditp=new String[50];
String[] style=new String[50];
int[] strlong=new int[50];
     String[][] datax=new String[5000][10];
 
    public static void main(String[] args) {
        pro t=new pro();
    }
 
    pro(){
 
 
 
 
          creditnumber=4;
        creditp[1]="year";
        creditp[2]="title";
        creditp[3]="name";
        creditp[4]="code"; 
        style[1]="INTEGER";
        style[2]="VARCHAR";
        style[4]="VARCHAR";
       style[3]="VARCHAR";
        strlong[4]=20;
strlong[3]=20;
        strlong[1]=20;
strlong[2]=20;
 
        String db,tab;
 
 
        db="mat";
        tab="mat"+30;
 
 
 
        table sub7=new table();
        sub7.credit=creditp;
        sub7.creditnumber=creditnumber;
        sub7.style=style;
        sub7.strlong=strlong;
        sub7.makedata(db,tab);
 
 
        int s;
        int datanumber=1;
 
           for(s=1;s<datanumber+1;s++){
 
        datax[s][1]=""+1;
        datax[s][2]=""+2;
        datax[s][3]=""+3;
        datax[s][4]=""+4;
        }
          insert sub5=new insert();
        sub5.creditnumber=creditnumber;
        sub5.style=style;
        sub5.data=datax;
        sub5.datanumber=datanumber;
        sub5.makedata(db,tab);
 
 
    }
 
 
}
 
 
package mix;
 
import java.sql.*; 
 
public class table{
 
    Connection dbx;   
Statement stx;   
String sqx; 
ResultSet  rsx; 
int creditnumber;
String[] credit=new String[50];
String[] style=new String[50];
int[] strlong=new int[50];
 
 
 
 
    void makedata(String db,String tab){
 
 
 
        String str;
 
        str="";
        int s;
        for(s=1;s<creditnumber;s++){
        if(style[s].equals("INTEGER"))str=str+credit[s]+" "+style[s]+",";
        if(style[s].equals("VARCHAR"))str=str+credit[s]+" "+style[s]+"("+strlong[s]+"),";
        }
        s=creditnumber;
        if(style[s].equals("INTEGER"))str=str+credit[s]+" "+style[s];
        if(style[s].equals("VARCHAR"))str=str+credit[s]+" "+style[s]+"("+strlong[s]+")";
 
 
 
 
    String url = "jdbc:h2:"+db+";create=true";   
String usr = "";   
String pwd = ""; 
 
 
 try{
 Class.forName("org.h2.Driver");
 
dbx = DriverManager.getConnection(url, usr, pwd); 
 
 
      stx = dbx.createStatement();
 
      String sqx = "CREATE TABLE " +tab+"("+str+")"; 
 
 
      stx.executeUpdate(sqx);
 
 } catch (Exception ex) { ex.printStackTrace();} 
 
 
 
 
 
 
    }
}
 
 
package mix;
 
import java.sql.*;
import java.io.*;
 
class insert {
 
    Connection dbx;   
Statement stx;   
String sqx; 
ResultSet  rsx; 
 
String[] style=new String[50];
int creditnumber;
  String[][] data=new String[5000][50];  
int datanumber;
 
int p;
 
    void makedata(String db,String tab) {
 
        String str;
 
        int s,sx;
 
        for(p=1;p<datanumber+1;p++){
 
 
       str="";
 
        for(sx=1;sx<creditnumber;sx++){
        if(style[sx].equals("VARCHAR"))str=str+change(data[p][sx])+",";
        if(style[sx].equals("INTEGER"))str=str+data[p][sx]+",";
        }
        sx=creditnumber;
        if(style[sx].equals("VARCHAR"))str=str+change(data[p][sx]);
        if(style[sx].equals("INTEGER"))str=str+data[p][sx];
 
    String url = "jdbc:h2:"+db+";create=true";   
String usr = "";   
String pwd = ""; 
 
 
 try{
 Class.forName("org.h2.Driver");
 
dbx = DriverManager.getConnection(url, usr, pwd); 
 
 
      stx = dbx.createStatement();
 
      String sql = "INSERT INTO "+tab+" VALUES("+str+")";
 
    int num = stx.executeUpdate(sql);
 
    stx.close();
 } catch (Exception ex) { ex.printStackTrace();} 
 
        }
 
 
  }
String change(String str){
String str1;
str1="'"+str+"'";
return str1;
}
}